@originals/cel

This checkout prepares CEL 2 for Originals SDK 4. SDK 3.0.0 is already published; this major-version update changes public asset identity while retaining its signed CEL 3 representation. Import the CEL 3 profile from @originals/cel/v3. It supplies strict JSON/CBOR transport, canonical event identity, authenticated controller history, and the ordered Bitcoin publication fold. See V3.md for the supported contracts and limits.

import { parseDocument, verifyHistory } from '@originals/cel/v3';
const document = parseDocument(serializedLog, 'json');
const result = verifyHistory(document);

An Original records signed claims about files and their versions. result.state.assetId is the did:cel:<SCID> identifier. Former ni: IDs remain readable. New genesis events carry this commitment in previousEvent; see SCID derivation and compatibility. deriveAssetId, normalizeAssetId, assetDigest, sameAssetIdentity and assetIdFromDigest support derivation and comparison with strict historical Originals 3 aliases. state.didCel and deriveDid, once deprecated compatibility surfaces, are removed from this SDK 4 / CEL 2 surface. Originals uses generic CCG CEL and does not implement the separate CCG did:cel DID method.

History verification authenticates controllers and signed resource descriptors. It does not fetch resource bytes, establish WebVH hosting, or prove Bitcoin acceptance or current possession. The full SDK supplies those public interfaces.

The root, /encoding, /cbor, and /testing entry points retain the preceding CEL utility API for existing integrations. They do not verify the Originals CEL 3 profile and are not a fallback for pre-3.0 Originals. New asset applications should use @originals/sdk or the explicit /v3 profile.

See asset identity and the SDK 4 / CEL 2 migration guide for public identifier changes, strict SDK 3 envelope compatibility and unchanged signed history. The /v3 subpath names the retained representation, not the npm major.

Node 20.10 or later is required. The profile is also browser-safe. Licensed MIT.