Implementation of CAIP-2 for EOSIO blockchains

CAIPs/caip-7.md

@@ -0,0 +1,71 @@
+---
+caip: 7
+title: Blockchain Reference for the EOSIO Namespace
+author: Sebastian Montero (@sebastianmontero)
+discussions-to: https://github.com/ChainAgnostic/CAIPs/issues/32
+status: Draft
+type: Standard
+created: 2020-11-30
+updated: 2020-11-30
+requires: 2
+---
+
+## Simple Summary
+
+This document is about the details of the EOSIO namespaces and references for CAIP-2.
+
+## Abstract
+
+In CAIP-2 a general blockchain identification scheme is defined. This is the
+implementation of CAIP-2 for EOSIO.
+
+## Motivation
+
+See CAIP-2.
+
+## Specification
+
+### EOSIO Namespace
+
+The namespace "eosio" refers to the EOSIO open-source blockchain platform.
+
+#### Reference Definition
+
+The definition is delegated to the [EOSIO Transactions Protocol Documentation](https://developers.eos.io/welcome/v2.0/protocol/transactions_protocol/#32-sign-transaction), the [Chain API Plugin Documentation of the EOSIO Developers Manual](https://developers.eos.io/manuals/eos/latest/nodeos/plugins/chain_api_plugin/api-reference/index?query=chain%20id&page=1#operation/get_info) and the pull request that implemented its generation [Chain ID generation implementation pull request](https://github.com/EOSIO/eos/pull/3425). 
+The Chain ID, as defined by EOSIO, is the SHA256 hash of the genesis state of the chain, represented as lower case hexadecimal number of 64 digits. In order to fit the CAIP-2 reference format, a 32 character prefix of the Chain ID is used.
+
+## Rationale
+
+Blockchains in the "eosio" namespace are identified by their Chain ID as mentioned in the Reference Definition Section.
+
+## Backwards Compatibility
+
+Not applicable
+
+## Test Cases
+
+This is a list of manually composed examples
+
+```
+# EOS Mainnet
+eosio:aca376f206b8fc25a6ed44dbdc66547c
+
+# Jungle Testnet
+eosio:e70aaab8997e1dfce58fbfac80cbbb8f
+
+# Telos Mainnet
+eosio:4667b205c6838ef70ff7988f6e8257e8
+
+# Telos Testnet
+eosio:1eaa0824707c8c16bd25145493bf062a
+```
+
+## Links
+
+- [Chain API Plugin Documentation of the EOSIO Developers Manual](https://developers.eos.io/manuals/eos/latest/nodeos/plugins/chain_api_plugin/api-reference/index?query=chain%20id&page=1#operation/get_info)
+- [Chain ID generation implementation pull request](https://github.com/EOSIO/eos/pull/3425)
+- [EOSIO Transactions Protocol Documentation](https://developers.eos.io/welcome/v2.0/protocol/transactions_protocol/#32-sign-transaction)
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).

README.md

@@ -27,6 +27,7 @@ If your CAIP requires images, the image files should be included in a subdirecto
 * **CAIP-4** - [Blockchain Reference for the BIP122 Namespace](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-4.md)
 * **CAIP-5** - [Blockchain Reference for the Cosmos Namespace](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-5.md)
 * **CAIP-6** - [Blockchain Reference for the LIP9 Namespace](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-6.md)
+* **CAIP-7** - [Blockchain Reference for the EOSIO Namespace](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-7.md)
 * **CAIP-10** - [Account ID Specification](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-10.md)
 * **CAIP-13** - [Blockchain Reference for the Polkadot Namespace](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-13.md)
 * **CAIP-19** - [Asset Type and Asset ID Specification](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-19.md)