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Adds an asset specification to the existing tezos namespace, covering 13 assets that a cross-reference project needs to name. The CAIP-2 profile is unchanged.
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Adds a CAIP-19 asset profile to the existing
tezosnamespace. The CAIP-2 profile is already ratified and is not touched.Who wrote this
I do not represent the tezos ecosystem. I maintain FAR, an open cross-reference between CAIP-19, CoinGecko and ISO 24165 (DTI) identifiers, which needs a way to name 13 assets on this chain. CASA's README invites profiles added to an existing namespace, so this documents how assets are addressed rather than claiming to speak for anyone. Offered for the tezos community to correct, adopt or replace.
Asset namespaces
slip44, fa12, fa2What this profile establishes
FA2 requires a
token_id; FA1.2 must never carry one. TZIP-12 is quoted verbatim: "Token type is uniquely identified on the chain by a pair composed of the token contract address and token ID." Verified on a live multi-asset contract serving uUSD/0, uDEFI/1, uBTC/2, uXTZ/3, uXAU/4 from one address.An indexer artefact that must not become an identifier: indexers synthesise
tokenId: 0for FA1.2 contracts. Writing that into a reference would be wrong.An unrepresentable-asset gap, flagged rather than hidden. Michelson
natis unbounded while CAIP-19 capstoken_idat 78 characters, and a live contract already has token id30000000000000. Implementations must fail loudly rather than truncate.Every example was verified against a live node or explorer; anything that could not be verified is marked as such in the document rather than asserted.
discussions-topoints at 0xcounting/FAR#1.