diff --git a/common/modules/biblio.org b/common/modules/biblio.org
index d03455c..c22345d 100644
--- a/common/modules/biblio.org
+++ b/common/modules/biblio.org
@@ -1,65 +1,69 @@
 #+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
 #+INCLUDE: "prelude.org" :minlevel 1
 
 * Bibliography
   :PROPERTIES:
   :CUSTOM_ID: main
   :END:
   #+BEGIN_EXPORT latex
   \begin{thebibliography}{Foo Bar, 1969}
   \footnotesize
 
+  \bibitem{EOSCSirs2020} EOSC SIRS Task Force
+  \newblock Scholarly Infrastructures for Research Software
+  \newblock 2020, European Commission, https://doi.org/10.2777/28598
+  
   \bibitem{Pietri2020a} Antoine Pietri, Guillaume Rousseau, Stefano Zacchiroli
   \newblock Forking Without Clicking: on How to Identify Software Repository Forks
   \newblock MSR 2020: 17th Intl. Conf. on Mining Software Repositories. IEEE
 
   \bibitem{Pietri2020b} Antoine Pietri, Guillaume Rousseau, Stefano Zacchiroli
   \newblock Determining the Intrinsic Structure of Public Software Development History
   \newblock MSR 2020: 17th Intl. Conf. on Mining Software Repositories. IEEE
 
   \bibitem{Pietri2020c} Antoine Pietri, Diomidis Spinellis, Stefano Zacchiroli
   \newblock The Software Heritage Graph Dataset: Large-scale Analysis of Public Software Development History
   \newblock MSR 2020: 17th Intl. Conf. on Mining Software Repositories. IEEE
 
   \bibitem{DiCosmo2020d} Roberto Di Cosmo
   \newblock Archiving and Referencing Source Code with Software Heritage
   \newblock International Congress on Mathematical Software (ICMS), 2020
 
   \bibitem{DiCosmo2020c} P. Alliez, R. Di Cosmo, B. Guedj, A. Girault, M. Hacid, A. Legrand, N. Rougier
   \newblock Attributing and Referencing (Research) Software: Best Practices and Outlook From Inria
   \newblock Computing in Science \& Engineering, 22 (1), pp. 39-52, 2020, ISSN: 1558-366X
 
   \bibitem{DiCosmo2020b} P. Alliez, R. Di Cosmo, B. Guedj, A. Girault, M. Hacid, A. Legrand, N. Rougier
   \newblock Attributing and Referencing (Research) Software: Best Practices and Outlook From Inria
   \newblock Computing in Science \& Engineering, 22 (1), pp. 39-52, 2020, ISSN: 1558-366X
 
   \bibitem{DiCosmo2020a} Roberto Di Cosmo, Morane Gruenpeter, Stefano Zacchiroli
   \newblock Referencing Source Code Artifacts: a Separate Concern in Software Citation
   \newblock Computing in Science \& Engineering, 2020, ISSN: 1521-9615
 
   \bibitem{Boldi2020} Paolo Boldi, Antoine Pietri, Sebastiano Vigna, Stefano Zacchiroli
   \newblock Ultra-Large-Scale Repository Analysis via Graph Compression
   \newblock SANER 2020, 27th Intl. Conf. on Software Analysis, Evolution and Reengineering. IEEE
 
   \bibitem{Rousseau2020} Roberto Di Cosmo, Guillaume Rousseau, Stefano Zacchiroli
   \newblock Software Provenance Tracking at the Scale of Public Source Code
   \newblock Empirical Software Engineering, 2020
 
   \bibitem{Pietri2019} Antoine Pietri, Diomidis Spinellis, Stefano Zacchiroli
   \newblock The Software Heritage Graph Dataset: Public software development under one roof
   \newblock MSR 2019: 16th Intl. Conf. on Mining Software Repositories. IEEE
 
   \bibitem{Abramatic2018} Jean-François Abramatic, Roberto Di Cosmo, Stefano Zacchiroli
   \newblock Building the Universal Archive of Source Code
   \newblock Communication of the ACM, October 2018
 
   \bibitem{DiCosmo2018} Roberto Di Cosmo, Morane Gruenpeter, Stefano Zacchiroli
   \newblock Identifiers for Digital Objects: the Case of Software Source Code Preservation
   \newblock iPRES 2018: Intl. Conf. on Digital Preservation
 
   \bibitem{DiCosmo2017} Roberto Di Cosmo, Stefano Zacchiroli
   \newblock Software Heritage: Why and How to Preserve Software Source Code
   \newblock iPRES 2017: Intl. Conf. on Digital Preservation
 
   \end{thebibliography}
   #+END_EXPORT
diff --git a/common/modules/status-extended.org b/common/modules/status-extended.org
index 8257ac9..09b10e6 100644
--- a/common/modules/status-extended.org
+++ b/common/modules/status-extended.org
@@ -1,504 +1,504 @@
 #+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
 #+INCLUDE: "prelude.org" :minlevel 1
 
 # not to be included as a whole, just pick individual slides as you see fit
 
 * Status
   :PROPERTIES:
   :CUSTOM_ID: main
   :END:
 ** The people
   :PROPERTIES:
   :CUSTOM_ID: people
   :END:
 *** The core team 						 :B_picblock:
     :PROPERTIES:
     :CUSTOM_ID: core-team-formal
     :BEAMER_env: picblock
     :BEAMER_opt: pic=team,width=.4\linewidth
     :END:
     - Roberto Di Cosmo 
     - Stefano Zacchiroli 
     - Nicolas Dandrimont (Engineer)
     - Antoine Dumont (Engineer)
 #    - and /Jordi, Quentin and Guillaume/
 *** Scientific advisors
     - Serge Abiteboul (French Science Academy)
     - Jean-François Abramatic (former W3C director)
     - Gerard Berry (CNRS Gold Medal, French Science Academy)
     - Julia Lawall (Coccinelle, Linux Kernel, Outreachy)
 ** Archive coverage --- archive.softwareheritage.org
   :PROPERTIES:
   :CUSTOM_ID: archive
   :END:
   #+BEAMER: \vspace{-1mm}
-  #+BEAMER: \begin{center}\includegraphics[width=\extblockscale{1\linewidth}]{2020-09-08-growth.png}\end{center}
+  #+BEAMER: \begin{center}\includegraphics[width=\extblockscale{1\linewidth}]{2021-01-archive-growth.png}\end{center}
   #+BEAMER: \vspace{-2mm}
 *** 
     #+BEAMER: \includegraphics[width=0.12\linewidth]{coverage/github}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.13\linewidth]{coverage/gitlab}
     #+BEAMER: \hfill
     #+BEAMER: \raisebox{2mm}{\includegraphics[width=0.14\linewidth]{coverage/bitbucket}}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.14\linewidth]{coverage/googlecode}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.14\linewidth]{coverage/gitorious}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.12\linewidth]{coverage/framagit}
     #+BEAMER: \\
     #+BEAMER: \includegraphics[width=0.10\linewidth]{coverage/hal}
     #+BEAMER: \hfill
     #+BEAMER: \raisebox{2mm}{\includegraphics[width=0.12\linewidth]{coverage/debian}}
     #+BEAMER: \hfill
     #+BEAMER: \raisebox{1mm}{\includegraphics[width=0.11\linewidth]{coverage/npm}}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.06\linewidth]{coverage/cran}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.12\linewidth]{coverage/gnu}
     #+BEAMER: \hfill
     #+BEAMER: \includegraphics[width=0.12\linewidth]{coverage/inria}
     #+BEAMER: \hfill
     #+BEAMER: \raisebox{-1mm}{\includegraphics[width=0.11\linewidth]{coverage/pypi}}
   #+BEAMER: \pause
 *** 
     - ~400 TB (uncompressed) blobs, ~20 B nodes, ~300 B edges
     - The /richest/ public source code archive, ... and growing daily!
 ** The structure of the archive					   :noexport:
 *** On-disk storage
     - flat file storage for contents
     - postgres database for the metadata
 *** Data model: /one/ big Merkle DAG, inspired by the git model
     - Origins (= repositories)
     - Occurrences (= branches)
     - Releases (= tags)
     - Revisions (= commits)
     - Directories (= trees)
     - Contents (= blobs)
 ** Archiving goals
    :PROPERTIES:
    :CUSTOM_ID: archivinggoals
    :END:
    Targets: VCS repositories & source code releases (e.g., tarballs)
 *** We DO archive
     - file *content* (= blobs)
     - *revisions* (= commits), with full metadata
     - *releases* (= tags), ditto
     - where (*origin*) & when (*visit*) we found any of the above
     # - time-indexed repo *snapshots* (i.e., we never delete anything)
     … in a VCS-/archive-agnostic *canonical data model*
 *** We DON'T archive
     # - diffs → derived data from related contents
     - homepages, wikis
     - BTS/issues/code reviews/etc.
     - mailing lists
     Long term vision: play our part in a /"semantic wikipedia of software"/
 ** Architecture
    :PROPERTIES:
    :CUSTOM_ID: architecture
    :END:
 *** Data flow
     :PROPERTIES:
     :CUSTOM_ID: dataflow
     :END:
     # 
     #+BEAMER: \begin{center}\includegraphics[width=\extblockscale{1.4\textwidth}]{swh-dataflow.pdf}\end{center}
 ** Data model							   :noexport:
 *** General schema
     - VCS-independent
     - fully deduplicated
       + files, directories and commits are /shared/
     - biggest git-like /graph/ in the world
 *** 
     \begin{center}
       \url{http://deb.li/swhdm}
     \end{center}
 *** full hash index (sha1, sha256, ...)
     Some funny facts:
      - the GPL2 licence appears under more than 500 names
        + including /aa.css.txt/ and /FullSync.txt/ ~ :-)
 ** Merkle DAG
 *** Merkle structure
     :PROPERTIES:
     :CUSTOM_ID: merkle
     :END:
 **** Merkle trees
      :PROPERTIES:
      :CUSTOM_ID: merkletree
      :END:
    # R. C. Merkle, A digital signature based on a conventional encryption
    # function, Crypto '87
    #+BEAMER: \vspace{-3mm}
 ***** Merkle tree (R. C. Merkle, CRYPTO 1987)                    :B_picblock:
       :PROPERTIES:
       :BEAMER_opt: pic=merkle, leftpic=true, width=.7\linewidth
       :BEAMER_env: picblock
       :BEAMER_act:
       :END:
       Combination of 
        - tree
        - hash function
    #+BEAMER: \pause
    #+BEAMER: \footnotesize
 ***** Classical cryptographic construction
       - fast, parallel signature of large data structures
       - widely used (e.g., Git, blockchains, IPFS, ...)
       - built-in deduplication
       #+BEAMER: \vspace{-1mm}
 **** Data Model
     :PROPERTIES:
     :CUSTOM_ID: datamodel
     :END:
 ***** The archive: a (giant) Merkle DAG
      #+BEAMER: \vspace{-3mm}
      #+BEAMER: \centering \includegraphics[width=\textwidth]{swh-data-model-h}
 
 **** The archive in a few pictures
      :PROPERTIES:
      :CUSTOM_ID: merkledemo
      :END:
 ***** A giant (extended) Merkle DAG
        #+LATEX: \only<1>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/merkle_1.pdf}}}
        #+LATEX: \only<2>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/contents.pdf}}}
        #+LATEX: \only<3>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/merkle_2_contents.pdf}}}
        #+LATEX: \only<4>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/directories.pdf}}}
        #+LATEX: \only<5>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/merkle_3_directories.pdf}}}
        #+LATEX: \only<6>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/revisions.pdf}}}
        #+LATEX: \only<7>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/merkle_4_revisions.pdf}}}
        #+LATEX: \only<8>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/releases.pdf}}}
        #+LATEX: \only<9>{\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/merkle_5_releases.pdf}}}
   #    #+LATEX: {\colorbox{white}{\includegraphics[width=\extblockscale{.9\linewidth}]{git-merkle/merkle_1.pdf}}}
 *** A revision node
     :PROPERTIES:
     :CUSTOM_ID: merklerevision
     :END:
 **** Example: a Software Heritage revision
 ***** 
       #+BEAMER: \vspace{-.5cm}\centering\includegraphics[width=0.9\textwidth]{git-merkle/revisions}
 ***** 
       Note: most object kinds currently have Git-compatible identifiers
 *** Giant DAG
     :PROPERTIES:
     :CUSTOM_ID: giantdag
     :END:
 **** The archive: a (giant) Merkle DAG
      # Using an empty frame because the image is difficult to read on swh bg.
      # Finding a way to override image bg for just this frame would be better.
 ***** 
       #+BEAMER: \centering \includegraphics[width=\extblockscale{\textwidth}]{git-merkle/merkle_5_releases}
 *** Giant DAG (single slide)
     :PROPERTIES:
     :CUSTOM_ID: giantdag1slide
     :END:
 **** The Software Heritage archive: a gigantic Merkle DAG
      #+LATEX: \centering\forcebeamerstart{}
      #+LATEX: \only<1>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/merkle_1}}}
      #+LATEX: \only<2>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/contents}}}
      #+LATEX: \only<3>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/merkle_2_contents}}}
      #+LATEX: \only<4>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/directories}}}
      #+LATEX: \only<5>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/merkle_3_directories}}}
      #+LATEX: \only<6>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/revisions}}}
      #+LATEX: \only<7>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/merkle_4_revisions}}}
      #+LATEX: \only<8>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/releases}}}
      #+LATEX: \only<9>{\colorbox{white}{\includegraphics[width=.75\linewidth]{git-merkle/merkle_5_releases}}}
      #+LATEX: \forcebeamerend{}
 *** Giant DAG (detailed)
     :PROPERTIES:
     :CUSTOM_ID: dagdetail
     :END:
 **** The archive: a (giant) Merkle DAG
      #+BEAMER: \vspace{-3mm}
      #+BEAMER: \centering \includegraphics[width=\textwidth]{swh-merkle-dag-wide}
 *** Giant DAG (detailed)
     :PROPERTIES:
     :CUSTOM_ID: dagdetailsmall
     :END:
 **** The archive: a (giant) Merkle DAG
      #+BEAMER: \centering
      #+BEAMER: \only<1>{\includegraphics[width=\textwidth]{swh-merkle-dag-small-visit1}}
      #+BEAMER: \only<2>{\includegraphics[width=\textwidth]{swh-merkle-dag-small-visit2}}
      #+BEAMER: \only<3>{\includegraphics[width=\textwidth]{swh-merkle-dag-small}}
 ** Technology							   :noexport:
   :PROPERTIES:
   :CUSTOM_ID: technology
   :END:
 *** Software stack
     :PROPERTIES:
     :CUSTOM_ID: swstack
     :END:
 **** 3rd party
      - Debian, Proxmox, ZFS on Linux, Puppet
      - PostgreSQL for metadata storage, with barman & pglogical
      - Celery (RabbitMQ backend) for task scheduling
      - Python3 and psycopg2 for the backend
      - Django, Bootstrap, D3.js for Web stuff
 **** in house
      - /ad hoc/ object storage (to avoid imposing tech to mirrors)
      - data model implementation, listers, loaders, scheduler
      - ~60 Git repositories (~20 Python packages, ~30 Puppet modules)
      - ~60 kSLOC Python / ~12 kSLOC SQL / ~4 kSLOC Puppet
      - licence choice: GPLv3 (backend) / AGPLv3 (frontend)
 *** Deployment architecture
      #+BEAMER: \vspace{1mm}
      #+BEAMER: \centering \includegraphics[height=.9\textheight]{general-architecture}
 *** Hardware stack
     :PROPERTIES:
     :CUSTOM_ID: hwstack
     :END:
 **** in house
      - 3x hypervisors with ~40 VMs
      - 1x high performance database server; read-only replica on a container
      - 2x dedicated storage servers, one of them using ZFS.
      - 3x high density storage array (2 x 60 x 6TB; 1 x 60 x 10TB)
      - 3x nodes for a kafka+elasticsearch cluster
 **** on Azure
      - full object storage mirror
      - full mirror of the database containing the graph
      - workers for content indexing
      - workers for download bundle preparation
 
 *** Software architecture                                          :noexport:
 **** Module dependencies (internal + external) 			 :B_picblock:
      :PROPERTIES:
      :BEAMER_env: picblock
      :BEAMER_opt: pic=swh-modules-deps-all,width=\linewidth
      :END:
 **** 
      let's zoom in: http://deb.li/swhdeps
 ** Technology							   :noexport:
   :PROPERTIES:
   :CUSTOM_ID: technology-short
   :END:
 *** Deployment and resource usage
 **** Software
      - around 60k SLOC of custom Python code, running on Debian Stable
      - PostgreSQL database for the metadata storage
      - Full docker-compose development environment
      - Work in progress: scale-out metadata storage (Cassandra?)
      - Work in progress: mirroring infrastructure (Kafka)
 **** Hardware
      - 12 servers (hypervisors, database, storage, staging and testing infrastructure) / 40 virtual machines with mass storage and a backup server at Inria
      - In-kind sponsorship of cloud and storage resources (Microsoft, University of Bologna)
 ** Software development						   :noexport:
   :PROPERTIES:
   :CUSTOM_ID: development
   :END:
 *** Software development
 **** classic FOSS development
      - language: English
      - development mailing list
        #+BEAMER: \\{\small \url{https://sympa.inria.fr/sympa/info/swh-devel}}
      - IRC
        #+BEAMER: \\
        #swh-devel / FreeNode
      - Forge
        #+BEAMER: \\{\small \url{https://forge.softwareheritage.org}}
      - Git, tasks, code review, etc.
 **** for more information
      #+BEAMER: \scriptsize
      https://www.softwareheritage.org/community/developers/
 ** Roadmap
   :PROPERTIES:
   :CUSTOM_ID: features
   :END:
 *** Features...
      - (done) *lookup* by content hash
      - (done) *browsing*: "wayback machine" for source code (API + UI)
      - (early access) *deposit* of source code bundles directly to the archive
      - (early access) *save code now*, on-demand archive
      - (done) *download*: =wget= / =git clone= from the archive
      - (todo) *provenance* lookup for all archived content
      - (todo) *full-text search* on all archived source code files
 #+BEAMER: \pause
 *** ... and much more than one could possibly imagine
     all the world's software development history at hand's reach!
 ** Web API                                                         :noexport:
   :PROPERTIES:
   :CUSTOM_ID: api
   :END:
 *** Web API
     :PROPERTIES:
     :CUSTOM_ID: apiintro
     :END:
 **** 
      RESTful API to programmatically access the Software Heritage archive \\
      *\url{https://archive.softwareheritage.org/api/}*
 **** Features
      - pointwise *browsing* of the archive
        - … snapshots → revisions → directories → contents …
      - full access to the *metadata* of archived objects
      - *crawling* information
        - /when have you last visited this Git repository I care about?/
        - /where were its branches/tags pointing to at the time?/
      # - derived information about archived contents (WIP)
      #   - MIME type, programming language, license, etc.
 **** Endpoint index
      \url{https://archive.softwareheritage.org/api/1/}
 *** A tour of the Web API --- origins & visits
     :PROPERTIES:
     :CUSTOM_ID: apitourvisits
     :END:
     #+BEAMER: \footnotesize
 #+BEGIN_SRC
 GET https://archive.softwareheritage.org/api/1/origin/ \
       git/url/https://github.com/hylang/hy
 { "id": 1,
   "origin_visits_url": "/api/1/origin/1/visits/",
   "type": "git",
   "url": "https://github.com/hylang/hy"
 }
 #+END_SRC
 #+BEAMER: \vfill
 #+BEGIN_SRC
 GET https://archive.softwareheritage.org/api/1/origin/ \
       1/visits/
 [ ...,
   { "date": "2016-09-14T11:04:26.769266+00:00",
     "origin": 1,
     "origin_visit_url": "/api/1/origin/1/visit/13/",
     "status": "full",
     "visit": 13
   }, ...
 ]
 #+END_SRC
 *** A tour of the Web API --- snapshots
     :PROPERTIES:
     :CUSTOM_ID: apitoursnapshots
     :END:
     #+BEAMER: \footnotesize
 #+BEGIN_SRC
 GET https://archive.softwareheritage.org/api/1/origin/ \
       1/visit/13/
 { ...,
   "occurrences": { ...,
     "refs/heads/master": {
       "target": "b94211251...",
       "target_type": "revision",
       "target_url": "/api/1/revision/b94211251.../"
     },
     "refs/tags/0.10.0": {
       "target": "7045404f3...",
       "target_type": "release",
       "target_url": "/api/1/release/7045404f3.../"
     }, ...
   },
   "origin": 1,
   "origin_url": "/api/1/origin/1/",
   "status": "full",
   "visit": 13
 }
 #+END_SRC
 *** A tour of the Web API --- releases                             :noexport:
     :PROPERTIES:
     :CUSTOM_ID: apitourreleases
     :END:
 #+BEAMER: \footnotesize
 #+BEGIN_SRC
 GET https://archive.softwareheritage.org/api/1/release/ \
       7045404f3d1c54e6473c71bbb716529fbad4be24/
 {
   "author": {
     "email": "tag@pault.ag",
     "fullname": "Paul Tagliamonte <tag@pault.ag>",
     "id": 96,
     "name": "Paul Tagliamonte"
   },
   "date": "2014-04-10T23:01:28-04:00",
   "message": "0.10: The Oh f*ck it's PyCon release",
   "name": "0.10.0",
   "synthetic": false,
   "target": "6072557b6...",
   "target_type": "revision",
   "target_url": "/api/1/revision/6072557b6.../",
   ...
 }
 #+END_SRC
 *** A tour of the Web API --- revisions
     :PROPERTIES:
     :CUSTOM_ID: apitourrevisions
     :END:
 #+BEAMER: \footnotesize
 #+BEGIN_SRC
 GET https://archive.softwareheritage.org/api/1/revision/ \
       6072557b6c10cd9a21145781e26ad1f978ed14b9/
 {
   "author": {
     "email": "tag@pault.ag",
     "fullname": "Paul Tagliamonte <tag@pault.ag>",
     "id": 96,
     "name": "Paul Tagliamonte"
   },
   "committer": { ... },
   "date": "2014-04-10T23:01:11-04:00",
   "committer_date": "2014-04-10T23:01:11-04:00",
   "directory": "2df4cd84e...",
   "directory_url": "/api/1/directory/2df4cd84e.../",
   "history_url": "/api/1/revision/6072557b6.../log/",
   "merge": false,
   "message": "0.10: The Oh f*ck it's PyCon release",
   "parents": [ {
      "id": "10149f66e...",
      "url": "/api/1/revision/10149f66e.../"
   } ],
   ...
 }
 #+END_SRC
 *** A tour of the Web API --- contents
     :PROPERTIES:
     :CUSTOM_ID: apitourcontents
     :END:
 #+BEAMER: \footnotesize
 #+BEGIN_SRC
 GET https://archive.softwareheritage.org/api/1/content/ \
       adc83b19e793491b1c6ea0fd8b46cd9f32e592fc/
 {
   "data_url": "/api/1/content/sha1:adc83b19e.../raw/",
   "filetype_url": "/api/1/content/sha1:.../filetype/",
   "language_url": "/api/1/content/sha1:.../language/",
   "length": 1,
   "license_url": "/api/1/content/sha1:.../license/",
   "sha1": "adc83b19e...",
   "sha1_git": "8b1378917...",
   "sha256": "01ba4719c...",
   "status": "visible"
 }
 #+END_SRC
 #+BEAMER: \normalsize \vfill \pause
 **** Caveats
      - rate limits apply throughout the API
      - raw download available for textual contents
 ** Accessing the archive                                           :noexport:
   :PROPERTIES:
   :CUSTOM_ID: accessing-short
   :END:
 *** Browse                                                    :B_block:BMCOL:
     :PROPERTIES:
     :BEAMER_col: 0.4
     :BEAMER_env: block
     :END:
     #+BEAMER: \begin{center}\includegraphics[width=0.5\textwidth]{archive-browse}\end{center}
     - https://archive.softwareheritage.org/browse
     - way back machine for software source code
   #+BEAMER: \pause
 *** Web API                                                   :B_block:BMCOL:
     :PROPERTIES:
     :BEAMER_col: 0.4
     :BEAMER_env: block
     :END:
     #+BEAMER: \begin{center}\includegraphics[width=0.5\textwidth]{archive-webapi}\end{center}
     - https://archive.softwareheritage.org/api
     - point-wise navigation of the archive as a graph
 ** Some technical challenges
   :PROPERTIES:
   :CUSTOM_ID: techchallenges
   :END:
 *** Expanding the archive
     - discover and classify /all/ the software sources
     - importers for other VCSs (SVN, Hg, ...)
    \hfill /We need your help!/
 *** Staying current 
     get new repositories and commits ASAP\\
    \hfill /We need reliable, standardised event feeds./
 *** Handling the backlog
     ingesting all the pre-existing data\\
     \hfill /Decades of software development are waiting!/
diff --git a/common/modules/swh-ardc.org b/common/modules/swh-ardc.org
index 27fce0b..1b29f07 100644
--- a/common/modules/swh-ardc.org
+++ b/common/modules/swh-ardc.org
@@ -1,275 +1,275 @@
 #+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
 #
 # Software is all around us
 #
 #+INCLUDE: "prelude.org" :minlevel 1
 #+INCLUDE: "169.org"
 * Source code pillar of Open Science, and how Software Heritage addresses ARDC
   :PROPERTIES:
   :CUSTOM_ID: main
   :END:
 ** Source code is /special/ (software is /not/ data)
   :PROPERTIES:
   :CUSTOM_ID: swnotdata
   :END:
 *** /Executable/ and /human readable/ knowledge \hfill copyright law :noexport:
     /“Programs must be written for people to read, and only incidentally for machines to execute.”/\\
     \hfill Harold Abelson
 #+BEAMER: \pause
 *** Software /evolves/ over time
     - projects may last decades
     - the /development history/ is key to its /understanding/
 #+BEAMER: \pause
 *** Complexity :B_picblock:
     :PROPERTIES:
     :BEAMER_env: picblock
     :BEAMER_OPT: pic=python3-matplotlib.pdf, width=.6\linewidth
     :END:
     - /millions/ of lines of code
     - large /web of dependencies/
       + easy to break, difficult to maintain
       + /research software/ a thin top layer
     - sophisticated /developer communities/
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 #+BEAMER: \pause
 *** Precious, endangered /executable/ and /human readable/ knowledge
     key people *passing away*, platforms (GoogleCode, Gitorious, etc.) closing down ...\\
     \hfill no organised effort to catalog and archive it
 ** Source code is /special/, cont'd
   :PROPERTIES:
   :CUSTOM_ID: swnotdatacontd
   :END:
 *** Versioning, granularity
    - Project :: “Inria created OCaml and Scikit-learn”\pause
    - Release :: “2D Voronoi Diagrams were introduced in CGAL 3.1.0”\pause
    - Precise state of a project :: “This result was produced using commit 0064fbd...”\pause
    - Code fragment :: “The core algorithm is in lines 101 to 143 of the file parmap.ml contained in the precise state of the project corresponding to commit 0064fbd....”
    #+BEAMER: \pause
 *** Authors can have multiple roles:
    - Architecture, Management, Development, Documentation, Testing, ...
 ** Software Source code: a pillar of Open Science
   :PROPERTIES:
   :CUSTOM_ID: pillaropenscience
   :END:
 *** Software is everywhere in modern research                    :B_picblock:
     :PROPERTIES:
     :BEAMER_opt: pic=papermountain, leftpic=true, width=.3\linewidth
     :BEAMER_env: picblock
     :BEAMER_COL: .6
     :END:
 #+BEGIN_QUOTE
 [...] software [...] essential in their fields.
 
 \mbox{}\hfill Top 100 papers (Nature, 2014)
 #+END_QUOTE
 #+BEGIN_QUOTE
 Sometimes, if you dont have the software, you dont have the data
 
 \mbox{}\hfill Christine Borgman, Paris, 2018
 #+END_QUOTE
 # http://www.nature.com/news/the-top-100-papers-1.16224
 #+BEAMER: \pause
 *** Open Science: three pillars                                     :B_block:
     :PROPERTIES:
     :BEAMER_COL: .45
     :BEAMER_env: block
     :END:
 #+latex: \begin{center}
 #+ATTR_LATEX: :width \extblockscale{\linewidth}
 file:PreservationTriangle.png
 #+latex: \end{center}
 #+BEAMER: \pause
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 *** Nota bene
     \hfill The links in the picture are *essential*
 ** A plurality of needs
   :PROPERTIES:
   :CUSTOM_ID: userneeds
   :END:
 *** Researchers
      - *archive* and *reference* software used in articles
      - *find* useful software
      - get *credit* for developed software
      - verify/reproduce/improve results
  #+BEAMER: \pause
 *** Laboratories/teams
      - track software contributions
      - produce reports
      - maintain web page
  #+BEAMER: \pause
 *** Research Organization
      - know its *software assets* for: technology *transfer*, impact *metrics*, strategy
 ** What is at stake: ARDC \hfill in increasing order of difficulty
   :PROPERTIES:
   :CUSTOM_ID: ardc
   :END:
 *** Archive
     Research software artifacts must be properly *archived*\\
     \hfill make sure we can /retrieve/ them (/reproducibility/)
     #+BEAMER: \pause
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 \vspace{-.5em}
 *** Reference
     Research software artifacts must be properly *referenced*\\
     \hfill make sure we can /identify/ them (/reproducibility/)
 #+BEAMER: \pause
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 \vspace{-.5em}
 *** Describe
     Research software artifacts must be properly *described*\\
     \hfill make it easy to /discover/ and /reuse/ them (/visibility/)
 #+BEAMER: \pause
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 \vspace{-.5em}
 *** Cite/Credit
     Research software artifacts must be properly *cited* /(not the same as referenced!)/\\
     \hfill to give /credit/ to authors (/evaluation/!)
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 ** What is at stake: beyond ARDC
   :PROPERTIES:
   :CUSTOM_ID: beyondardc
   :END:
 *** Sustainability
     Organisational schemas, legal tools, ecomonic models, processes and policies to
     ensure research software can be maintained and sustained over time
 #+BEAMER: \pause
 *** Technology transfer and industry collaboration
     Approaches, support, methods, processes to establish connections with
     industry in order to foster uptake and transfer of research software
 ** Addressing the four ARDC needs (see [[https://dx.doi.org/10.1007/978-3-030-52200-1_36][ICMS 2020]] for details)
   :PROPERTIES:
   :CUSTOM_ID: swh-ardc-short
   :END:
-*** Archive (8B+ files, 140M+ projects)
+*** Archive (10B+ files, 150M+ projects)
     :PROPERTIES:
     :BEAMER_env: block
     :BEAMER_COL: .5
     :END:
 #+ATTR_LATEX: :width .8\linewidth
    file:swh-dataflow-merkle.pdf
 \vspace{-1em}
 #+BEAMER: \pause
    - [[https://save.softwareheritage.org][save.softwareheritage.org]]
    - [[https://deposit.softwareheritage.org][deposit.softwareheritage.org]]
 # (HAL, IPOL)
 #+BEAMER: \pause
 *** Reference (20 billion SWHIDs)                                   :B_block:
     :PROPERTIES:
     :BEAMER_env: block
     :BEAMER_COL: .5
     :END:
     [[https://www.softwareheritage.org/2020/07/09/intrinsic-vs-extrinsic-identifiers/][Intrinsic, decentralised, cryptographically strong identifiers, SWHIDs]]
 \vspace{-1em}
 #+ATTR_LATEX: :width 1.02\linewidth
     file:SWHID-v1.4_3.png
     Now supported [[https://www.softwareheritage.org/2020/05/13/swhid-adoption/][in SPDX 2.2, Wikidata]] etc.
 #+BEAMER: \pause
 *** :B_ignoreheading:
     :PROPERTIES:
     :BEAMER_env: ignoreheading
     :END:
 *** Describe                                                        :B_block:
     :PROPERTIES:
     :BEAMER_env: block
     :BEAMER_COL: .5
     :END:
     - /Intrinsic metadata/ from source code
     - Contributed the [[https://codemeta.github.io/codemeta-generator/][Codemeta generator]]
 #+BEAMER: \pause
 *** Cite/Credit                                                     :B_block:
     :PROPERTIES:
     :BEAMER_env: block
     :BEAMER_COL: .5
     :END:
     - Contributed /software citation/ style
       [[https://www.ctan.org/tex-archive/macros/latex/contrib/biblatex-contrib/biblatex-software][biblatex-software, v 1.2-2 now on CTAN]]
 
 ** Addressing the A(archive) in ARDC (see [[https://dx.doi.org/10.1007/978-3-030-52200-1_36][ICMS 2020]] for details)
   :PROPERTIES:
   :CUSTOM_ID: swh-a
   :END:
 #+latex: \vspace{-0.8em}
-*** /Universal/ source code archive \hfill not only resarch \hfill (8B+ files, 140M+ projects)
+*** /Universal/ source code archive \hfill not only resarch \hfill (9B+ files, 150M+ projects)
     :PROPERTIES:
     :BEAMER_env: block
     :END:
 #+ATTR_LATEX: :width .6\linewidth
    file:swh-dataflow-merkle.pdf
 #+latex: \vspace{-1em}
    - your research software /is likely there already/!
 #+BEAMER: \pause
    - anyone can trigger archival with [[https://save.softwareheritage.org][save.softwareheritage.org]]
 #+BEAMER: \pause
    - selected partners can push to the archive via [[https://deposit.softwareheritage.org][deposit.softwareheritage.org]]
 # (HAL, IPOL)
 ** Addressing the R(eference) in ARDC (see [[https://dx.doi.org/10.1007/978-3-030-52200-1_36][ICMS 2020]] for details)
   :PROPERTIES:
   :CUSTOM_ID: swh-r
   :END:
 #+latex: \vspace{-0.8em}
 *** Software Heritage Identifiers (SWHID) \hfill [[https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html][link to full docs]]  :B_block:
     :PROPERTIES:
     :BEAMER_env: block
     :END:
     20+B [[https://www.softwareheritage.org/2020/07/09/intrinsic-vs-extrinsic-identifiers/][intrinsic, decentralised, cryptographically strong identifiers, SWHIDs]]
 # #+INCLUDE: "../../common/modules/swh-id-syntax.org::#swh-id-syntax" :only-contents t :minlevel 3
   #+LATEX: \centering%\forcebeamerstart
   #+LATEX: \mode<beamer>{\only<1>{\includegraphics[width=0.9\linewidth]{SWHID-v1.4_1.png}}}
   #+LATEX: \mode<beamer>{\only<2>{\includegraphics[width=0.9\linewidth]{SWHID-v1.4_2.png}}}
   #+LATEX: \only<3->{\includegraphics[width=0.9\linewidth]{SWHID-v1.4_3.png}}
   #+LATEX: %\forcebeamerend
 *** 
     :PROPERTIES:
     :BEAMER_act: <4->
     :BEAMER_env: block
     :END:
     Emerging standard : Linux Foundation [[https://spdx.github.io/spdx-spec/appendix-VI-external-repository-identifiers/#persistent-id][SPDX 2.2]]; IANA registered; WikiData [[https://www.wikidata.org/wiki/Property:P6138][P6138]]
 #+latex: \vspace{-0.5em}
 *** Full fledged /source code references/ for reproducibility       :B_block:
     :PROPERTIES:
     :BEAMER_act: <5->
     :BEAMER_env: block
     :END:
     Examples: [[https://archive.softwareheritage.org/swh:1:cnt:64582b78792cd6c2d67d35da5a11bb80886a6409;origin=https://github.com/virtualagc/virtualagc;lines=245-261/][Apollo 11 AGC excerpt]], [[https://archive.softwareheritage.org/swh:1:cnt:bb0faf6919fc60636b2696f32ec9b3c2adb247fe;origin=https://github.com/id-Software/Quake-III-Arena;lines=549-572/][Quake III rsqrt]]; Guidelines available, see [[https://dx.doi.org/10.1007/978-3-030-52200-1_36][ICMS 2020]] 
 #+BEAMER: \pause
 ** Addressing D(escribe) and C(ite) in ARDC (see [[https://dx.doi.org/10.1007/978-3-030-52200-1_36][ICMS 2020]] for details)
   :PROPERTIES:
   :CUSTOM_ID: swh-dc
   :END:
 *** Describe                                                        :B_block:
     :PROPERTIES:
     :BEAMER_env: block
     :BEAMER_COL: .5
     :END:
     - Collect /intrinsic metadata/
     - Contributed the [[https://codemeta.github.io/codemeta-generator/][Codemeta generator]]
 #+ATTR_LATEX: :width .8\linewidth
     file:CodeMetaGenerator.png
 #+BEAMER: \pause
 *** Cite/Credit                                                     :B_block:
     :PROPERTIES:
     :BEAMER_env: block
     :BEAMER_COL: .5
     :END:
     - Contributed /software citation/ style
       [[https://www.ctan.org/tex-archive/macros/latex/contrib/biblatex-contrib/biblatex-software][biblatex-software, v 1.2-2 now on CTAN]]
 #+ATTR_LATEX: :width .8\linewidth
     file:BibLaTeX-swh.png