Add Massa namespace (massa) with CAIP-2 profile - #207
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Adds a CAN for the massa ecosystem with a CAIP-2 Blockchain ID profile. Drafted by the maintainers of FAR, an open cross-reference between CAIP-19, CoinGecko and ISO 24165 identifiers, which needs a CAIP-2 for this chain to name assets that exist on it. The authors do not represent the massa ecosystem and offer this as a starting point for its community to correct, adopt or replace. Discussion: 0xcounting/FAR#1
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Adds a CAN for Massa with a CAIP-2 Blockchain ID profile.
Who wrote this
I do not represent the Massa ecosystem. I maintain FAR, an open cross-reference between CAIP-19, CoinGecko and ISO 24165 identifiers. Offered as a starting point for Massa's maintainers to correct, adopt or replace.
Proposal
massa:+ the node'su64chain_idas canonical decimal. Max 20 digits, so truncation never arises.Verified live (2026-09-14)
POST https://mainnet.massa.net/api/v2get_status→chain_id: 77658377,version: MAIN.5.0. Buildnet →77658366. Corroborated twice more against theCHAINIDconstant inmassa-models/src/config/constants.rsand the published table atdocs.massa.net/docs/node/constants.A self-check worth knowing
Massa chain ids are the ASCII code points of a four-letter network code:
MASM= 77·65·83·77 =77658377,MASB=77658366,MASS=77658383. Documented in the Rationale, since it lets a reviewer sanity-check a value without a node.Address format, corrected against source
Verified against
massa-models/src/address.rs, which documents the format asA + {U | S} + base58(version + hash). The README makes a point that is easy to get wrong: the1inAU1…/AS1…is not a fixed prefix. It is address version0, whose varint is0x00, which base58 renders as1. Tooling that hard-codesAU1/AS1breaks at address version 1.discussions-to: 0xcounting/FAR#1