1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c2b5b8731940cd8c184e80a307995e3907a56e59846ef2bc0ec375d94288d3. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbb8fa54-2b04-4da4-b7b2-61e16d259088.json and https://artists.proofprofile.net/proofs/artist/fbb8fa54-2b04-4da4-b7b2-61e16d259088.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba609979c5b5849a0b84ab0959a147f48a9fe24a58442e3d6245a71e0b2043af. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLN302200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905598739590f960e301fb67832dc81194ba9e9441e9bf6a9c74f28aae8f83f0. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLN302200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba5b6bfae59c797a2b722f8b6c77080bf12a9db8f2d8adf0e2ebe5bf0eddad. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLR862300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2dc46fcb586bb4a48434e3907b991ac02bfa618306d8f255bc71d79bec3bc4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLR862400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5264fca6ea3e379377d7c995098e071c0ba4978fcfa5cc3c7c2d1e67446ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLN302500025.