diff --git a/README.md b/README.md
index c95645f019163294dba0a6a27dfc260e05fd81dd..657f164a9cf8c52172a7b62bed5e57a448e92b15 100644
--- a/README.md
+++ b/README.md
@@ -16,3 +16,6 @@ This repository contains the slides of Moul’s presentations and conferences ab
## [RML13 − Perpignan − 23th May 2019](http://rml13.creationmonetaire.info/)
- [How to send a transaction](https://moul.duniter.io/slides/how_to_send_a_transaction/)
- [Video on TuTube](https://www.youtube.com/watch?v=5H7cYOWAkfk)
+
+## [RML14 − Toulouse − 28th November 2019](https://rml14.monnaielibreoccitanie.org/)
+- [How to contribute to Silkaj](https://moul.duniter.io/slides/how_to_contribute_to_silkaj/)
diff --git a/public/how_to_contribute_to_silkaj/index.html b/public/how_to_contribute_to_silkaj/index.html
new file mode 100644
index 0000000000000000000000000000000000000000..d6d44081a1dce36143c7a78b465278943308e26b
--- /dev/null
+++ b/public/how_to_contribute_to_silkaj/index.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <title>How to contribute to Silkaj</title>
+ <meta charset="utf-8">
+ <link rel="stylesheet" href="../css/styles.css" />
+ <style>
+ @font-face{
+ font-family: 'Ubuntu Mono';
+ src: url('../css/UbuntuMono-R.ttf');
+ }
+ @font-face{
+ font-family: 'Yanone Kaffesatz';
+ src: url('YanoneKaffeesatz-Regular.otf');
+ }
+ h1, h2, h3 { font-family: 'Yanone Kaffeesatz'; font-weight: normal; }
+ .remark-code, .remark-inline-code { font-family: 'Ubuntu Mono'; }
+ </style>
+ </head>
+ <body>
+ <script src="../js/remark-latest.min.js">
+ </script>
+ <script>
+ var slideshow = remark.create({
+ sourceUrl: 'presentation.md',
+ highlightStyle: 'tomorrow-night',
+ countIncrementalSlides: false,
+ });
+ </script>
+ </body>
+</html>
diff --git a/public/how_to_contribute_to_silkaj/presentation.md b/public/how_to_contribute_to_silkaj/presentation.md
new file mode 100644
index 0000000000000000000000000000000000000000..c918bf9e4584d4e5f789d92ed3fe6d133109f842
--- /dev/null
+++ b/public/how_to_contribute_to_silkaj/presentation.md
@@ -0,0 +1,679 @@
+name:begin
+class: center, middle
+
+# How to contribute to Silkaj
+
+\#RML14 − 28th November 2019 − Toulouse − Moul
+
+<img src="../images/silkaj_logo.svg" width=50 />
+<img src="../images/duniterpy_logo.png" width=50 />
+<img src="../images/deathreaper.svg" width=50 />
+<img src="../images/Python-logo-notext.svg" width=50 />
+<img src="../images/GitLab_Logo.svg" width=50 />
+<img src="../images/g1_logo.svg" width=50 />
+
+Slides: [frama.link/TdU0VkUy](https://frama.link/TdU0VkUy)
+
+---
+### Outline
+--
+
+- Contributions since the LCM13
+--
+
+- GitLab
+--
+
+- How to contribute to Silkaj
+--
+
+ - Projects presentation
+--
+
+ - Install the development environment with Poetry
+--
+
+ - Ticket tracker system
+--
+
+ - Code architecture
+--
+
+ - Repository architecture, files
+--
+
+ - Continuous Integration and Delivery (CI/CD)
+--
+
+ - Dive into source files: `cert`
+
+---
+name: contrib
+
+### Contributions since the LCM13
+--
+
+#### Silkaj
+--
+
+- Migrate the devevelopment environment tool:
+ - from Pipenv to Poetry
+ - Dependency manager, virtual environment
+--
+
+- Create Docker images with Poetry installed for all supported Python versions (3.5, 3.6, 3.7, 3.8)
+--
+
+- Set-up the CI/CD: checks, tests, PyPI releases
+--
+
+- Mentoring matograine
+--
+
+- Sarted to wrote tests: coverage 37 −> 51%, mocking
+--
+
+- Big improvements on the `info` command
+---
+
+template: contrib
+
+```bash
+silkaj info --money (--wot, --blockchain)
+╒═══════════════════════════╤══════════════════════════════════════════╕
+│ Currency │ Ğ1 │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Connected to node │ g1.duniter.org:443 │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Target growth │ 9.76%/year │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Current growth │ 0.01%/year │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Monetary mass per member │ 4,753.66 Ğ1 │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Monetary mass │ 11,370,753.12 Ğ1 │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Δt UD │ a day │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Next UD date │ 2019-11-24 12:00:00 │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Δt UD reevaluation │ 183 days │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Previous UD value │ 10.07 Ğ1 (from 2019-03-22 to 2019-09-20) │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Current UD value │ 10.11 Ğ1 (since 2019-09-20 16h) │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Next UD reevaluation │ 10.15 Ğ1 (from 2020-03-21 06h) │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Next UD formula │ UD(t+1) = UD(t) + c² × M(t)/N(t+1) │
+├───────────────────────────┼──────────────────────────────────────────┤
+│ Current decimal unit base │ 0 (10^0 = 1) │
+╘═══════════════════════════╧══════════════════════════════════════════╛
+```
+---
+
+template: contrib
+
+##### DeathReaper
+.center[<img src="../images/deathreaper.svg" width=100 />]
+--
+
+- `silkaj excluded`
+- Bot which notify of the forums excluded identities from the WoT
+
+--
+
+```md
+### Exclusions de la toile de confiance Ğ1, pertes des statuts de membre
+> Message automatique. Merci de notifier vos proches de leur exclusion de la toile de confiance
+
+- [`Williambenhaim`](https://g1.duniter.fr/#/app/block/274234/7D4334A459D6F35A089492D346B07C6711AFB0E8273CE9DCE3BC65C594061A25?ssl=true) :
+ - **certifié·e par** Jonelio108, Gauri, Djtina12.
+
+- [Gil alias `DoMi5500`](https://g1.duniter.fr/#/app/block/274249/807A1D4D378BABA6F53E50F1FDD448EFF3F5D098428DA4D5D6A73DC8A18EDE06?ssl=true) :
+ - **certifié·e par** Eauvive, nicoleC, VivienProuvot, LucieHaget, @Pol, ArnaudFleuri.
+```
+
+---
+
+template: contrib
+
+#### DuniterPy
+--
+
+- Agreement between vit and me
+--
+
+- Dev Env: Poetry, CI/CD
+--
+
+- Improvements, Bug fixes
+--
+
+
+#### GitLab
+--
+
+- Backups
+- Upgrades
+- Migration
+
+---
+
+### GitLab
+.center[<img src="../images/GitLab_logo_text.svg" width=200 />]
+--
+
+- https://git.duniter.org
+--
+
+- Ticket tracker, git repository
+--
+
+- Forge to support developers of projects around the Ğ1
+--
+
+- To support this service, you can donate Ğ1 to [78Zz pubkey](https://duniter.org/fr/financements/)
+--
+
+- This money will be used to pay the server hosting and the system adminstration
+--
+
+- Ask for an account on the forum
+--
+
+- Nice feature: CI/CD
+--
+
+- Two runners
+
+---
+class: center, middle
+
+## How to contribute to Silkaj
+---
+
+#### Projects
+--
+
+##### What’s the Silkaj Project about?
+.center[<img src="../images/silkaj_logo.svg" width=100 />]
+--
+
+- Powerfull, lightweight, and multi-platform command line client written with Python for Ğ1 and Ğ1-Test currencies
+--
+
+- Project is aiming at creating a generic tool to manage accounts and wallets, and to monitor the currency
+
+--
+
+##### DuniterPy
+.center[<img src="../images/duniterpy_logo.png" width=100 />]
+
+- Python APIs library to implement Ğ1 clients software
+
+---
+
+#### Install the development environment with Poetry
+- [Documentation to install Silkaj with Poetry](https://git.duniter.org/clients/python/silkaj/blob/dev/doc/install_poetry.md)
+--
+
+- On Debian Buster:
+```bash
+sudo apt install libsodium23 python3-pip python3-venv
+python3 -m pip install poetry --user --pre
+```
+--
+```bash
+git clone git@git.duniter.org:clients/python/silkaj.git
+cd silkaj
+poetry install
+```
+--
+```bash
+poetry run silkaj
+```
+--
+```bash
+poetry run pytest
+```
+---
+name: tts
+#### Ticket tracker system
+--
+
+- Issues
+- Merge requests
+- Milestones
+- Releases
+---
+
+template: tts
+
+
+---
+#### Code architecture
+--
+
+```bash
+User -> TUI -> Silkaj -> DuniterPy -> Network >-\
+User <- TUI <- Silkaj <- DuniterPy <- Network <_/
+```
+--
+
+##### **TUI**: terminal user interface
+--
+
+- [Click](https://click.palletsprojects.com/): Command line interface creation kit
+--
+
+- Display: `tabulate`, `texttable`, `click.echo()`, `print()`
+--
+
+
+##### Network APIs
+--
+
+- [BMA](https://git.duniter.org/nodes/typescript/duniter/blob/dev/doc/HTTP_API.md): *Basic Merkle API*, historic ~~s2s~~ and s2c
+--
+
+- [Cesium+](https://git.duniter.org/clients/cesium-grp/cesium-plus-pod): BMA and Elasticsearch based, improved for Cesium
+--
+
+- [WS2P](https://git.duniter.org/nodes/common/doc/blob/master/rfc/0004_ws2p_v1.md): *WebSocket To Peer*, s2s, node API based on websocket
+--
+
+- [GVA](https://git.duniter.org/nodes/common/doc/blob/graphql_api_rfc/rfc/0003%20RFC%20GraphQL%20API%20for%20Duniter%20Clients.md): *GraphQL Verification API*, future client API
+
+.center[<img src="../images/GraphQL_Logo.svg" width=50 />]
+
+---
+
+name: files
+#### Repository architecture, files
+--
+
+- [`pyproject.toml`](https://git.duniter.org/clients/python/silkaj/blob/dev/pyproject.toml), `poetry.lock`
+--
+
+
+```toml
+[tool.poetry]
+name = "silkaj"
+version = "0.7.3"
+description = "Powerfull, lightweight, and multi-platform command line client written with Python for Ğ1 and Ğ1-Test currencies"
+authors = ["Moul <moul@moul.re>"]
+maintainers = ["Moul <moul@moul.re>"]
+readme = "README.md"
+license = "AGPL-3.0-or-later"
+homepage = "https://silkaj.duniter.org"
+repository = "https://git.duniter.org/clients/python/silkaj"
+documentation = "https://git.duniter.org/clients/python/silkaj/tree/dev/doc"
+keywords = ["g1", "duniter", "cryptocurrency", "librecurrency", "RTM"]
+
+[tool.poetry.dependencies]
+python = "^3.5.3"
+duniterpy = "^0.55.1"
+click = "^7.0"
+tabulate = "^0.8.3"
+PyNaCl = "^1.3"
+
+[tool.poetry.dev-dependencies]
+pytest = "^5.1"
+(…)
+```
+---
+template: files
+
+- `release.sh`
+--
+
+- `tests/test_*.py`
+--
+
+- `bin/silkaj`
+--
+
+- `silkaj/*.py`
+--
+
+:
+ - 15 −> 18 files
+
+---
+template: files
+
+- [`.gitlab-ci.yml`](https://git.duniter.org/clients/python/silkaj/blob/dev/.gitlab-ci.yml)
+--
+
+
+```yml
+stages:
+ - checks
+ - tests
+ - publish
+ - coverage
+
+variables:
+ DOCKER_IMAGE: "registry.duniter.org/docker/python3/poetry"
+ PYTHON_VERSION: "3.7"
+
+image: $DOCKER_IMAGE/$PYTHON_VERSION:latest
+
+.changes:
+ only:
+ changes:
+ - bin/silkaj
+ - silkaj/*.py
+ - tests/*.py
+```
+---
+template: files
+- [`.gitlab-ci.yml`](https://git.duniter.org/clients/python/silkaj/blob/dev/.gitlab-ci.yml)
+
+```yml
+.tests:
+ extends: .changes
+ stage: tests
+ image: $DOCKER_IMAGE/$PYTHON_VERSION:latest
+ script:
+ - poetry install
+ - poetry run pytest
+(…)
+tests-3.8:
+ extends: .tests
+ tags: [poetry-78]
+ variables:
+ PYTHON_VERSION: "3.8"
+(…)
+pypi:
+ stage: publish
+ only: [tags]
+ when: manual
+ script:
+ - poetry publish --build --username $PYPI_LOGIN --password $PYPI_PASSWORD
+```
+---
+
+name: cicd
+#### Continuous Integration and Delivery (CI/CD)
+--
+
+##### Silkaj and DuniterPy pipelines
+--
+
+
+--
+
+- Checks: build, [`Black` format](https://black.readthedocs.io/en/stable/)
+--
+
+- Tests with [`pytest`](https://pytest.org) framework on all supported Python versions
+--
+
+- Release on the *Python Package Index* [PyPI](https://pypi.org/project/silkaj/) and [PyPI test](https://pypi.org/project/silkaj/)
+--
+
+- [Coverage](https://clients.duniter.io/python/silkaj/index.html) on GitLab Pages
+--
+
+
+
+---
+
+template: cicd
+name: docker
+##### Docker images
+--
+
+- Repository: https://git.duniter.org/docker/python3/poetry/
+--
+
+
+###### Dockerfile:
+
+```docker
+FROM python:3.8-slim-buster
+
+# Install libsodium
+RUN apt update && \
+apt install --yes libsodium23 black make && \
+rm -rf /var/lib/apt/lists
+
+# Install Poetry
+RUN pip3 install poetry --pre
+```
+--
+
+- Standard [Python Docker images](https://github.com/docker-library/python) for all the supported versions
+--
+
+- Install [Poetry](https://poetry.eustace.io/) on top
+---
+template: docker
+
+###### .gitlab-ci.yml
+
+```yml
+(…)
+script:
+ - docker login -u "gitlab-ci-token" -p "$CI_BUILD_TOKEN" $CI_REGISTRY
+ - docker build --pull -t "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:$CI_BUILD_TAG" $PYTHON_VERSION
+ - docker login -u "gitlab-ci-token" -p "$CI_BUILD_TOKEN" $CI_REGISTRY
+ - docker tag "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:$CI_BUILD_TAG" "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:$CI_BUILD_TAG"
+ - docker push "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:$CI_BUILD_TAG"
+ - docker tag "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:$CI_BUILD_TAG" "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:latest"
+ - docker push "$CI_REGISTRY_IMAGE/$PYTHON_VERSION:latest"
+(…)
+```
+--
+
+- Build from the `Dockerfile`
+--
+
+- Publish the image to the registry with:
+--
+
+ - the git tag
+ - with the `latest` tag
+---
+
+template: docker
+##### Pipeline
+
+
+
+---
+template: docker
+##### Registry
+
+
+
+---
+name: cert
+#### Dive into source files for the `cert` command
+--
+
+- [`bin/silkaj`](https://git.duniter.org/clients/python/silkaj/blob/dev/bin/silkaj):
+
+```python
+from silkaj.cli import cli
+
+if __name__ == "__main__":
+ cli(obj={})
+```
+--
+
+- [`silkaj/cli.py`](https://git.duniter.org/clients/python/silkaj/blob/dev/silkaj/cli.py):
+
+```python
+from click import group, help_option, version_option, option, pass_context
+from silkaj.cert import send_certification
+
+@group()
+@help_option("-h", "--help")
+@version_option(SILKAJ_VERSION, "-v", "--version")
+@option("--gtest", "-gt", is_flag=True, help="ĞTest: `https://g1-test.duniter.org` endpoint")
+@pass_context
+def cli(ctx, peer, gtest, auth_scrypt, nrp, auth_file, file, auth_seed, auth_wif):
+ ctx.obj = dict()
+ ctx.ensure_object(dict)
+ ctx.obj["GTEST"] = gtest
+ …
+
+cli.add_command(send_certification)
+```
+---
+
+template: cert
+- [`silkaj/silkaj/cert.py`](https://git.duniter.org/clients/python/silkaj/blob/dev/silkaj/cert.py):
+
+```python
+# imports
+
+@command("cert", help="Send certification")
+@argument("id_to_certify")
+@coroutine
+async def send_certification(id_to_certify):
+ client = ClientInstance().client
+ id_to_certify = await get_informations_for_identity(id_to_certify)
+
+ # Authentication
+ key = auth_method()
+
+ # 3 Checks (…)
+ if issuer_pubkey == id_to_certify["pubkey"]:
+ message_exit("You can’t certify yourself!")
+
+ # Display license
+ head = await HeadBlock().head_block
+ currency = head["currency"]
+ license_approval(currency)
+
+ # Certification confirmation
+ await certification_confirmation(
+ issuer, issuer_pubkey, id_to_certify, main_id_to_certify
+ )
+```
+
+---
+template: cert
+
+```python
+ identity = Identity(
+ version=10,
+ currency=currency,
+ pubkey=id_to_certify["pubkey"],
+ uid=main_id_to_certify["uid"],
+ ts=block_uid(main_id_to_certify["meta"]["timestamp"]),
+ signature=main_id_to_certify["self"],
+ )
+
+ certification = Certification(
+ version=10,
+ currency=currency,
+ pubkey_from=issuer_pubkey,
+ identity=identity,
+ timestamp=BlockUID(head["number"], head["hash"]),
+ signature="",
+ )
+
+ # Sign document
+ certification.sign([key])
+
+ # Send certification document
+ response = await client(wot.certify, certification.signed_raw())
+
+ if response.status == 200:
+ print("Certification successfully sent.")
+ else:
+ print("Error while publishing certification: {0}".format(await response.text()))
+
+ await client.close()
+```
+---
+
+template: cert
+
+##### DuniterPy example
+- [`duniterpy/examples/send_certification.py`](https://git.duniter.org/clients/python/duniterpy/blob/dev/examples/send_certification.py)
+
+---
+class: center, middle
+--
+# END
+
+---
+#### Nice features comming
+--
+
+- Send multiple outputs transactions with different amounts
+--
+
+- Send membership document
+--
+
+- Add ability to unlock and lock transaction with `XHX`, `CSV`, `CLTV` conditions
+
+---
+
+name: links
+#### Links
+--
+
+##### Communication means
+- Technical Forum: [forum.duniter.org](https://forum.duniter.org)
+- XMPP chatroom [chat.duniter.org](https://chat.duniter.org)
+ - [xmpp:duniter@muc.duniter.org](xmpp:duniter@muc.duniter.org)
+- Matrix chatroom: `#duniter:matrix.org`
+--
+
+
+##### Silkaj
+- Silkaj website: https://silkaj.duniter.org/
+- Silkaj repository: https://git.duniter.org/clients/python/silkaj
+- [CONTRIBUTING.md](https://git.duniter.org/clients/python/silkaj/blob/dev/CONTRIBUTING.md)
+--
+
+
+##### DuniterPy
+- DuniterPy repository: https://git.duniter.org/clients/python/duniterpy
+---
+
+#### Credit
+- Slides published under the GNU GPL v3 free license
+
+- Slides source: [git.duniter.org/moul/slides](https://git.duniter.org/moul/slides)
+- Slides Pages: [moul.duniter.io/slides/how_to_contribute_to_silkaj](https://moul.duniter.io/slides/how_to_contribute_to_silkaj/)
+- Slideshow created using [remark](https://github.com/gnab/remark)
+--
+
+
+#### Donation
+- My public key: GfKERHnJTYzKhKUma5h1uWhetbA8yHKymhVH2raf2aCP
+
+- Or, as a QRcode:
+<img src="../images/qrcode.png" width=100 />
+???
+If you did appreciate the presentation, you can donate here
+
+---
+class: center, middle
+
+## Thanks
+???
+Thank you for your attention
+
+---
+
+class: center, middle
+## Questions?
+(En français si vous le souhaitez)
+???
+If you have a question, this is the right moment
+
+---
+
+name: end
+class: center, middle
+.center[<img src="../images/g1_logo.svg" width=500 />]
diff --git a/public/images/GitLab_Logo.svg b/public/images/GitLab_Logo.svg
new file mode 100644
index 0000000000000000000000000000000000000000..e0e22ac32e0cffa49067590b830ef02ea4a0d116
--- /dev/null
+++ b/public/images/GitLab_Logo.svg
@@ -0,0 +1,25 @@
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+ <!-- Generator: Sketch 3.3.2 (12043) - http://www.bohemiancoding.com/sketch -->
+ <title>Group</title>
+ <desc>Created with Sketch.</desc>
+ <defs></defs>
+ <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
+ <g id="Fill-1-+-Group-24" sketch:type="MSLayerGroup">
+ <g id="Group-24" sketch:type="MSShapeGroup">
+ <g id="Group">
+ <path d="M105.0614,193.655 L105.0614,193.655 L143.7014,74.734 L66.4214,74.734 L105.0614,193.655 L105.0614,193.655 Z" id="Fill-4" fill="#E24329"></path>
+ <path id="Fill-6" fill="#FC6D26"></path>
+ <path d="M105.0614,193.6548 L66.4214,74.7338 L12.2684,74.7338 L105.0614,193.6548 Z" id="Fill-8" fill="#FC6D26"></path>
+ <path id="Fill-10" fill="#FC6D26"></path>
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