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 0xe5c9e1ec3ed4b8e0d63159c6086562309eb2637ea692dda32f7e2d3ce0c0994e. 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/f3cc570f-bf93-4ac1-be0f-81c753edf38a.json and https://artists.proofprofile.net/proofs/artist/f3cc570f-bf93-4ac1-be0f-81c753edf38a.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 0xe0761077eeeec810eb3fad41e781cb3697be704a9e8e2facbf000cfb81432375. 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/QM7282434317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0433fba9e59c53f4d33f73f9a6a19b35df01bf5849ca78d4e981a71738cf70. 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/DGA052414553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fca60652b45b0695530aece8952e2575ffc2c1e6e94b87f5e27a7606baf7139. 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/QM6P42449418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6e529a94a7928d2d77e4d54dabdfdd269f4eb7e6bc85bf028b5f6492c6ba04. 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/QM6P42449417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb8750301ebd4ed6a0acdc09f907d8fb001cb32730a2e53054fdbad394a42b8. 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/QM6P42449416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba29ee16b4aabdf0d1ddcef8521cdf19474390828830f0d40c1d754f9fe05c. 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/FRX762490118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d11e737a9ac30f3e235fce759a4c3c16d6b31c374801301639fd065f4dbc14. 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/QM6N22493378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e66631581b62e58d5a68a60d0d895a416eae99a265896333366ba908ec780fd. 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/QM4TW2464123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360cece9b0c604a04025e00495331e3a6811568921deeab49c94a7bb9815f306. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TW2412426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d966b59f5ea738cd9d4d576a981f64bcfe8eb20bf8d5ffa3fea1237e9f7c1ea. 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/QMFMG2338003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6910bb41039324fa7830cb6499cef5da312321d7f96550a1a4169f2d6bbb991. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMFMG2338004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d264e29c6b94abf33f8f14d2d4b318a6c5b668ff2666219ff791bae39526b1b. 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/QMFMG2338005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2014da4d8198ff361e2e10ac00bd19a3d897cd76f55d87618d70e1f52cd8c320. 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/DGA062314087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b72065f58fd41a317b5491778626cdb6c0bf06dba14833d8794f18e3b1dce8b. 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/FRX872324786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae1bb9606e0febe281e834cc82ecadfe13e9d65f2c9fabf2ddcabb534b66ef4. 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/QM6N22316224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e833c95a18fc1b1517dada10dcb0dcf09383b8bdc50927ff062bf92a92f053. 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/FR96X2338670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c17b589dac45141648539c77e04112610b6724c39cfdaef7290f707d2963e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDA62206402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155af4de1268021b8273fc4002546a9d1b5e1be8e8d1241581d7936a929a23ab. 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/FRX762237213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36449128c153c2a30f3b71ca60899fc0618d4a076cb2b95d140f7113fc4dd067. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHZ62281941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4378cccaf6c5f77fc5e49bee061435a1f9eab8da80f7e2a1fa280ff04028fcd. 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/FRX202203799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ac08c191c19dc825cd0d699bf40997cc2e2ecbef55e689a177defb6e3f0500. 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/UKEX32215661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca56b96584b6c7af94bfa7be10c5b3e9aa054ddc36d8a053e7a129b5ddd68082. 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/UKEX32215662.