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 0x5d012299d385fdb9c18c7ac5393aff79cc24322186aa41dfe733c4ae36d3c3b0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c36eb4e-ccb4-46c6-94a5-f955e79fd4d5.json and https://artists.proofprofile.net/proofs/artist/3c36eb4e-ccb4-46c6-94a5-f955e79fd4d5.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 0x9fd297b1b19f1dbf26bd81a4df977c2c61200d562a444359cb5f122737acc390. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ1599088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa647eb812413c721304b038fafe239ede1828709e49982ee0506505ff026d97f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGJ1599089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2cd680f5f45e777d9fcc89127f4a258a09fbba45a2e331867a4410deeacb19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ1599090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca3daf05af717753a3bdfe457aeba7bcb1a13fb370cebf5155b16444ae77594. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ1599092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57a0ae8511d05bc4a783b2c62b35b54c6869ef03d49b749c7120bf9c9347e57. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ1599095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc5693c90c8cf5e4ec388d84f75a5a7071663c5548e8271ca637ba3c3a19ca4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGJ1599096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ab2aae8d2342a141095a145e3b329ac7ba79c93604f41c58c98d0913659ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ1599098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709e87d3697b3e732d2fcce7d871a166dff34fe19c8e37f55a9d9e41e2ccae0c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ1599099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8badcbf2cedeb6f19d46b0ba8461b528da9e68d8cc20b726ef404d9a170fae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCGJ1599102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09e94e6d44d8d756b53479144abb63e929200716d62f17b5326c47bbaaf68a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1599103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1caecdc27db26b03e11e03981a137d995a4fa95d8d4a0aa1de881a6d6774df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1599104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3995f4256019bf23a92f5cc51eb6b5ff5d284d5ea2b46b0d573d43d01315ac99. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1599108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123124961c17777d8fdc728bfcc028d9562efb7b8768855197fac3a369d6cd5d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USCGJ1599109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544c1a615ddfdeddf9d10234aa0792be9d2e62209bb2420464752571b5865e54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92018649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6048b36005a42678be8f2f49b228830fe40f13b2c33d569add4231077e9f6af. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92018663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ab2aae8d2342a141095a145e3b329ac7ba79c93604f41c58c98d0913659ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGJ1599098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec881e3198622956f42317d7e50fd8e9f71f6fc2ea6c976b0bdfebf607a52d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARG991043496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af7a6b8a69494cb9c6db738b7b54614320bc562912dac7d1bf4342089045b75. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARG991043498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9569302b2af95a00ee5ae46ca8cf28fed8122c2e9caf555b1e029a62021fdf6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARG991043499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0951d51908017c079ebc17374f55efe9fcda06767ee4f90524b2a89d8c8f625a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARG991043504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985f57f760872b51b1466026a409c9ad8b88cdd48dd50786db54f48ab8ab0be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARG991043506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb85ea4f2466c486e7c011090ca1be7acabfe70e86793be9493da92b7d3c5f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARG991043507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26176ed8d4004fb1282ca69fa52014dd49475b2cc337f2083654d85ef7e28ea4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARG991043510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123124961c17777d8fdc728bfcc028d9562efb7b8768855197fac3a369d6cd5d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1599109.