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 0x7317674575b14c438dbc78738da4204b973d97ba200349f13e6c63caaf98c01d. 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/f8497537-2bd8-470c-817a-6e1a3c28b448.json and https://artists.proofprofile.net/proofs/artist/f8497537-2bd8-470c-817a-6e1a3c28b448.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 0xf09bc15b5cb2fe6be4a308c6848487e4323848a8d2a79cf16cae4df9c5b4ec4a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ARF051400625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4700a5e76bd48c044b00a0cb777c0b690c51106cf40393afff1161f42352922f. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ARTRE1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce86ef17710a91aa31bedc03e99030e8072f6f9e3f4f68b480bd933d9886d0b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARTRE1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a6c9fa0a88da56b6e1c64e927528357820acb2ae7c1d19884e6bf1a115af5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKXN22212657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9003e24b9114e449fd8b00f096de8d17238eaac034ff14878923f7661caeaefb. 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/UKXN22212658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc4558c386c41e9cd355846470f67b05e3d964feb13b113f5a1cb92b1f7e31e. 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/UKXN22212653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3154b46e7477aa38e4166f675784144018984ddd5b8e93a7d1b472bfdb914e74. 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/UKXN22212655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db076cfcbb4dba5e8502d2124890820bf3d744a79b1df609938a9e5b8ddcdd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKXN22212654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361a62776492ca7dea6729527c069f330c70cefbdae9f3d2163e2ef460ac8a11. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKXN22212656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd163178b528147639d0c291b6236e38fc423764273204ce155fa36e07dd08b. 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/UKXN22212652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7336d9072f714f0e7e2e0516fd45c22ab752b7d71540f1e16dc8ee7d8125e. 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/UKXN22562612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9bcb5ae4eab641eafdf668bc444f083cc6e6a4913c3ec593e4d3c2a1f7c2ab. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UKXN22562613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d42c316203b19efcb8eeeb71a2dd0a6b58542d86f4e15c5befe7c387d9da19. 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/UKXN22562614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9649916293a88ac721a3b9ea568e7433535439cab6809d30b5d4f953de796b6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/UKXN22562615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd824b60fc3d9874a57f114ae7e26f4f2504ef00958a5602c752b77979e649221. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKXN22562616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fdb50507a2206b8d264f645f19f28e0bfd63a01cb7aeca8308c22b9e920053. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKXN22562619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4150208abcbf5ac0323dfe8c4dc87dc454f87132f6d8e2c70e8902e5eb2539. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKXN22562620.