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 0xd87064118049e5ec5c09b3ed7c08a9f517136d58beee31185d02be67ac139bc4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33eedf60-fed8-4cca-a756-9774cc48de08.json and https://artists.proofprofile.net/proofs/artist/33eedf60-fed8-4cca-a756-9774cc48de08.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 0xd1e92693b8f84e697f4ae270b361723dacd030ed07be5ec06cd8fee8e28f5880. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZHNA1926528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b5f82c8e554720e70b1c07fac4a95beb8358b504c70d582b8102de19e1fe81. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHNA1927248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdebdc1e619e01f8ef3919f1c924fef930bfe80702883d2bd62c84e0dbbff167. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZHNA1947648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e55b9e395f3306df947c53673cca3f186f2dab08524aff1253d518f4469ae1. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:53Z), 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/QZFYW2023858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3883c652e574725ac775e36584f039e1827bfb58a4bd6fa817fad973f2dfaf2a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFZ32038415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3112911e8cdc10fc06133a100341b732ff7c239d7a38b8dd877234ffb1455300. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN72005406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2f3e91e0cb8ebb03cf4616c02fa5b960470126dd87aa29d7238190b0cebe69. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6P2165764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cc4829dcb9c7a911f29b957e53c658e59dbe757d25a904bd6c8d0330654993. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZMEM2158556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899e8c1c137d7d626bf7d17538aaeb3cfbea6efcfdf65fd2a7cb8b2b0967a3cc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWU2123581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510514350f28c593e2136dcd12b0cac4fe445911518fff08e590d6a484e55ec2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAU2102571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dafdd7bd217da5d15cbcfccd683827631c5366025cb7334d200d0e07a060c7e. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZES52262120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450af0b8a658279d268243fe081be42f570cc09e5377ade7778b49436a5e5a05. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZK6F2223140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924b255924d81089bfe4c42b362c82f2e0537a6da5ba00b23b677b12019f0968. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB62421276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96d4479b055f176b830482ca392b72d7333fba97043700c93a7a96baf9553c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:01:27Z), 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/QZNWS2580898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81d760143236922523820931130d2ed82cd490265dccd3f14a6b5a777ca52e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:40:47Z), 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/AEA3A2157051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb602c60d30f0c9ff575264811fac96e996cbdb513db1c858fc479ad117ea23b7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:45Z), 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/QZZ7R2525537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5be920faaf09e727b5bdd71cfac86c32bef6c82c54f8f40516f7534209bdc2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7T2508551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a678d1d86a16bcaf6343b2066a06bfd8d97d4438eba138058680d75c725f11a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7U2570136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2dc0756f8e4f5d54f25faf726d51357afe86c92d8135a5efbd36e637ab7489. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3EX2576100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00915e74b6b2a892ca8366f35d62b886c443caddc845b303524f74b181699163. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT6E52571093.