diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,63 @@
+# Created by .ignore support plugin (hsz.mobi)
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
diff --git a/0004-siren-prototype-accept-decline.adoc b/0004-siren-prototype-accept-decline.adoc
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+++ b/0004-siren-prototype-accept-decline.adoc
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+= Siren Prototype for comit-rs HTTP API - Accept/Decline actions
+Franck Royer <franck.royer@coblox.tech>
+:toc:
+:revdate: 2019-05-02
+
+* Author(s): {authors}
+* Date: {revdate}
+
+Tracking issue: https://github.com/comit-network/comit-rs/issues/917[comit-rs#917]
+
+== Context
+
+In order to move forward easily with Bobtimus prime we should define the siren json document of how a IN_PROGRESS response look like in each state of accept and decline, i.e. when you call GET /swaps/ for Bob.
+
+Siren repository: https://github.com/kevinswiber/siren/
+
+The prototype must conform to https://github.com/kevinswiber/siren/blob/master/siren.schema.json[Siren JSON schema]
+
+== Research
+
+.The prototype
+[source,json]
+----
+{
+  "class": ["swaps"],
+  "entities": [
+    {
+      "class": ["swap"],
+      "rel": ["item"],
+      "properties": {
+        "role": "Alice",
+        "protocol": "rfc003",
+        "status": "IN_PROGRESS",
+        "parameters": {
+          "alpha_asset": {
+            "name": "bitcoin",
+            "quantity": "100000000"
+          },
+          "alpha_ledger": {
+            "name": "bitcoin",
+            "network": "regtest"
+          },
+          "beta_asset": {
+            "name": "ether",
+            "quantity": "10000000000000000000"
+          },
+          "beta_ledger": {
+            "name": "ethereum",
+            "network": "regtest"
+          }
+        }
+      },
+      "links": [
+        {"rel": ["self"], "href": "/swaps/rfc003/399e8ff5-9729-479e-aad8-49b03f8fc5d5"},
+        {
+          "rel": ["human-protocol-spec"],
+          "href": "https://github.com/comit-network/RFCs/blob/master/RFC-003-SWAP-Basic.md"
+        }
+      ],
+      "actions": [
+        {
+          "name": "accept",
+          "title": "Accept",
+          "method": "POST",
+          "href": "/swaps/rfc003/399e8ff5-9729-479e-aad8-49b03f8fc5d5/accept",
+          "type": "application/json",
+          "fields": [
+            {
+              "name": "beta_ledger_refund_identity", "title": "Refund address on Ethereum", "type": "text",
+              "class": ["address", "ethereum"]
+            }
+          ]
+        },
+        {
+          "name": "decline",
+          "title": "Decline",
+          "method": "POST",
+          "href": "/swaps/rfc003/399e8ff5-9729-479e-aad8-49b03f8fc5d5/decline",
+          "type": "application/json",
+          "fields": []
+        }
+      ]
+    }
+  ],
+  "links": [
+    {"rel": ["self"], "href": "/swaps"}
+  ]
+}
+
+----