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 0xd7a9c417b00de2c7245b7d85022c2aa398fb71ee3b174a80b0d9cfc528ca760f. 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/0501ef9a-224f-492b-ad47-b1065c6b26d6.json and https://artists.proofprofile.net/proofs/artist/0501ef9a-224f-492b-ad47-b1065c6b26d6.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 0x3b4bfb0dad195e08fb77dca31d99dbbda65b803b5a77dc82fdca468411c436a2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR2X41938603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259acbf75e4993b4d67e6cbb26f9810ce1fe8479fc5a1f162e02a5561a7cda08. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR2X41948425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa243347bcca38c3c5cfcc34ea593726b9d7df5f67eb62f8fdb28bf5e3e8983d8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:01Z), 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/FRX762082188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d66b9cbb28eeab1d46286a85a95e29ab4be3cd1cb5c2fced76d099316f2e58. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR26V2067899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84d68935995d7dcb43e6fbbc11b2cc12e187bc2649e498de7689fbdd29109fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X42188187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c7142e3f2526a9c5b3b42ea7cfa39b3b1d499943a0382da587442ad78af0ab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR10S2296943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216272a6a8448ac2d0082fd827451b399c11410bcd17c4993b39fb19ea82f2b2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:30Z), 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/FR2X42208891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da26b2779c6e60982acb17d1a5107b77d2eb1cfff77bcfd419e07d39755d577. 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/FR2X42285408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b81ae5f8e34140f53561ffcecf3a68528e4ad70b08ba41db8789edaed66d90b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X42288878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa932c2e14a4a7571b94338963ecb4c3f1bb22e2e9f2fea354924e5cbe1c927cb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR96X2269740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb46261fe907ccb7480c587f4adbacd6dbaa3753776939686040ff37df906c0c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX202295434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5675201ab37bbc13f9e748a3cb8981acfd84fd65d269a1a41604af0a2071df12. 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/FRX282216610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95272bc1cca1dcbfc1e263b846408713b106d64cb82f0c94d9dfdf0caff79554. 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/FRX282231544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211ccd616c366541611e1e1fa675078f88fdfb60da80720e9d06154441a8eb93. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX282241486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5bcc90371a4d4f7ac8a044320cddbbfec36ef5ba55cca6c465cf30cdbc09b7. 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/FRX452203825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cab2371f48c195ca157559da638ec1789c12afe584d3a8ff802f9254de5c48. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRX452321340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81808c1f02a0bf2516c82e29f61157ff1e9045f8eb03d3018772f02f13fbdcbc. 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/DGA0P2436026.