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 0x53471a99ef88c0bea4dd9f58b789adfe279478901b7de09174b0a3d44bd17a1e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d39e13ef-83a7-4334-a5dd-fe8210ae56ab.json and https://artists.proofprofile.net/proofs/artist/d39e13ef-83a7-4334-a5dd-fe8210ae56ab.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 0x6d56d3c46b8bd01fd2531df483d99812240434cf0698907c6be3cac0e5671b60. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:43Z), 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/DEL211903250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7bef9be14d05915f42d854a27ced54218a3c4d906a3fd3f18e59d26d6525b1. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:08:25Z), 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/DEL211903251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e187d8072903979ee02ee65bc073de0251054aa1d86c2696373ded394a2668. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:20:20Z), 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/DEL211903252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49518e0ae5ae0882d5dc7a3e94c6e99f3111e81fe74dc26e6c88b5c09fd5199. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEL211903253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd67a5d4de6966b757a92fc4af4426729fb8835dadf39feecb193a1a22bbc929. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEL211903256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4971c5656e2e994bf56a5728768d8f9b55a0a67ef9a3a9f6804ba809da8272e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEL211903257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601594018f14c0552879b953c0addbe49c04d6e297ca8ba5f8328d83a8eb8c76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEL211903258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f44f4e386f2ecac432c16c550f5be57f6b6ac01ba310d84a6ed264fe4e5493e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:35Z), 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/DEL211903259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef293544766923a560c4194b669345f1d42467e9dc1834204b18b10b4f17c43. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:56Z), 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/TCAHX2479900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd0fa56e33a65c4782afe15fe60f296bd33417866f130a65fecc92937bd07b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:47Z), 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/TCAHX2479925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1038bab582fc6cdb4e7da7a4ec88c3d3b2e8783a7f018340f0549f71b12d2922. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAHX2479918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce576fbd11f1e678c028ff9bf3425ce54b7288708f493b21be9c63da035d1c2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHX2479933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f0c871665d4b6c0ab781f164c62adb1f859a0a4233b603997bd9314fccfd4f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:59Z), 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/TCAHX2479935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd446b9e99e804d23a875f19bf2c88d7d4482343a37d870598228e0ea4836d28d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHZ2426701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bd5a41c2d4f0cb9a9a689e8ed03a45b9cd461a8f26e6d98f6301549a2ae6b5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIP2407084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5989bdb0d0270091b56a700e3ddca4d8d32907a2c7c1daff1662856e6b8e5786. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:41Z), 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/TCAIU2440610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2df279006ed8c5a4171913f8ea864c7d2eafd99e7e51935313e0584ddbfb4f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIS2440754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b4f426d4e6a20e1e7a959d987f369a8243c4c3c404e99c0bf031fc83bf9f3c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIS2440673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ff6ca8958a356826abb747fa82f76c003e39e37cd71a88751da77cc264e73e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJP2569422.