Customers can now test their full ingest-and-verify pipeline in CI with zero
network and zero Attesto account. Python attesto.testing.MockAttesto (context
manager over a local HTTP server + pytest-fixture friendly), TypeScript
createMockServer() (fetch-compatible handler, WebCrypto Ed25519, edge-safe),
and Go attestotest.NewServer() (httptest) implement the v2 subset the SDKs
use — streams, single+batch events, head, receipts, tenant event listings —
with REAL seq/hash-chain semantics via the same frozen canonical functions,
the server-side number-policy mirror (422), and windows/checkpoints built on
demand with per-leaf inclusion proofs (promote-odd-node fold).
Hard rule, test-enforced in all three languages: mock evidence is structurally
incapable of passing as real — every emitted object carries "mock": true,
receipts are signed by a per-instance throwaway key under kid
attesto-mock-ed25519, and verify_receipt against any real witness key fails.
Acceptance: the P1 verify suite (receipt, payload commitment, inclusion,
completeness) passes against the emulator with real clients in all three
SDKs; head tracking sees an honestly chained sequence. READMEs gain a
"Testing without Attesto" quickstart.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
