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 0xf89eb242e4fb37f0ad11b8e10c2f9e2b13a64c4e9165a51ae1b5e2adff938c09. 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/f966a2b9-2aa3-4e8a-8643-4a2e247c6ef4.json and https://artists.proofprofile.net/proofs/artist/f966a2b9-2aa3-4e8a-8643-4a2e247c6ef4.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 0xb6e167dbc8c73d97a6566f3457eeeab0f2a8e23d7894a4c89822dd189cfbd28d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452002102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11110efe2e627f38b4bfa05b49d002e0339dfe3f4dc533433abf39e701795f5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX452002103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f07b1b2a81471919dbc298b13b9766adcac34c4c309b928b129363c7c812645. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX452002104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405bcff7fe8699907fd331d0684c4e499c3f60bfd99f7f962986d5a5d62a032b. 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/FRX452002105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b27a216f275e87f62c9fc84ec39548a08c5d54e061c8033c3c3a4f3a7d06ced. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR10S2109409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428266b05bde5170690ef49a0bb266389f35b8344794a8101f2b97d21cc081ab. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:33:04Z), 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/FR10S2109410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca29601d5e5a2e70d1f9c2de7615bb8a484827a49951056adb9d4aa41d8f0f2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DGA072159985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e68658c7a1da00bfb4ca61a73d8a9c032e7e614bed662c417dfbc38c02ea2c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:13Z), 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/FR96X2151303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741e74ce152b0e967df89e3f865c5f776af3c5d94eec5831ebb38e83a3171b3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX762108384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1318ec74dffe886d7710ec210dfdba65380ee74ccaec96b45bd183d7926d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX762108385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664a9e9306175922b6af3a5ce5d4aa361afec914a2fd22e2fbf8a4f58aea518. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762108386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100134044283a2230b5357c0b2cdc78a66ba7c40037678c23f44402b1d5d3bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX762108387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413036b0fb34ede74d82e68721b354f51f9840c76698580a68b69d9b92cb07b1. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/RUA1D2225273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f280519844e98b6837d9367c0c8a0d2fde9e9236f154c92110be3dfc8baf24. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUA1D2269901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd211a6bbdb9211e66e7a02502693c4dff0e30f7c807b66c7bbacf9d1798cdd80. 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/RUA1D2293538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97769dd161096781b9be0127c5d61e9d1e7a27874bb2a5afd42e9c6f304db9a4. 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/DGA062492027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd787077f07735c276e6f8983f3bd44ebe3f07d87420526e1238fd557ce4cf7. 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/DGA062492028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0bbd677b7b09b8e9e46418cbbf19223f6cc5573ebb98e893e403049ba4717b. 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/DGA062492029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1121989c8d9f8f12332c068ca4456bc1f53838f2540d575c35036a0380d80c1. 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/DGA062492030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2bb1defc7bbee674b166eaa2358b4df04c3c1b30d29534703a0bbe7d75d0e8. 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/DGA062492031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b88549531013d18e307d6acf9cc6faaa322db476986a716e68fab95e4ae40. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA062492032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e53ade10950a69c60bbd1eb861b5906b18dc3f2a3eaf9440bcf5f124b217440. 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/DGA062492033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc410ee1a472a087e40e359670663dc67ae6314950d6d92cc935ab162db1f4efc. 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/DGA062492034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010e90531e69ab69e38c1cd31aa162acd830e4fbf7a2062f6d49917d6219dbd0. 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/DGA062492035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f3da1744f08aad419faa41604b5f3d1ffd24886243d719a9b7c58887debcb1. 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/FRX452155212.