ic-platform-types

The canonical Principal, Account, Subaccount and public identity errors used by IC Platform. This group owns a literal package version and changelog, independently of facade/runtime releases, while sharing the same workspace, dependency catalog and lockfile. Platform re-exports these exact definitions; Wire owns its schema implementations. The independent series continues from published Types 0.15.0.

The default feature set is empty. Bytes, bounded text and Serde are always available. principal-self-authenticating delegates derivation to registry ic_principal, without its default, conversion or Serde features. The external-Principal feature, aliases and conversions remain removed; the return value has canonical Types identity. Base Types selects neither registry Principal nor cryptography. No feature selects runtime, executor, Wire or Candid.

Existing Platform consumers keep their Rust import paths and account identity semantics. Present subaccounts serialize through serde_bytes with exactly 32 bytes. This changes binary Serde contracts: Postcard adds the 0x20 length prefix after Some's 0x01 marker; None stays 0x00. Coordinate Wire schemas/clients, qualify budgets and preserve original retry/hash bytes. Platform-owned external DTOs now use this canonical Principal. Its group ledger owns release notes and links the earlier coordinated history. Initial 0.1 notes remain historical. Release and publication require explicit RELEASE_GROUP=types.