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 0xfc139403b169f0664d33871888b8a783102d75e63b2f3f942e7e743fcd50f9ae. 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/d67d47ba-31f5-4b99-9794-11d712c20677.json and https://artists.proofprofile.net/proofs/artist/d67d47ba-31f5-4b99-9794-11d712c20677.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 0x20ef758baa909b46b548085ecdd9b3c4c1a65396548cf3a06197558ab914f15d. 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/INE302500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d95e9d10f2e679c377fc40944117d55d5358723d64d644cc406d70cd8fa09bc. 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/SE6XY2382797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0598204374924400cab87d1393bca727a0c20293b547d868f931ee91743b3d03. 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/SE6XY2343378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385d64f6a1a0de851a6e5d28744ec0f8f4c8521c0b463b8533a2eacf5eedc635. 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/SE6HN2343206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32219fc7dff9f6eb88153125b3a3a8c523ba1b15eeca5effaee302579c5176e. 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/USL4Q2203818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e410a3a846676f194e7f7a139ac8b35ed9d8915ac3e0bc66569c095e9c2dbc2. 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/USHM22272656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238e98ece4a298268dd2133f2ba7be240d6861d8a0fb06c1a1a882c5da221578. 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/INO132200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c59f152bec29b4ac01bb7e3b8936b52675fe6b512906cb5cfd76a39d54fcae6. 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/INO132102429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68e481c8be53d8a2a1eccd20f5c447c01339aa85fbfa5765c8d87ac96790d81. 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/SE6XY2139616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e5b9609bb32a9cf1c1ec3bcbe6657d6a44e80323085f862d182fd4623860d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INO132103675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921667f5305e2919cfe430d8594a5c5af4eb6dcf0e2e5fd4840eb90a24cd6bc0. 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/INO132103010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c93ba7ea6525d7c20e51b0658ce9c0d1f79f5220b0817606e1bb09f854d12b. 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/INO132001645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9957c3046286f1c1118a1884f81991d80aeef5f867715b0af294fec87b95d347. 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/SE6HN2039083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2493ca1d97447d309115b8db9a43140c910d35a3de0dccb9b252f791fd2e6b60. 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/SE6A92084607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb841567a0f90f0e12b4c757e45aba3a7471e5ce2301cd41853c17dd7ad2401c7. 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/SE6I31908495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28b5d6919380436e53bb78f67cf294573900b3e97c6146dd1a8ef58d1389a7b. 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/SE6A91925036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcc2a0d47d4b10bc212462ccb964a0ec3ef604b12b5f2d2cc9f3b4dd918031b. 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/SE5751959940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27ed135b2dc3f761a13c95f1eb97c1ea67f338cb571fd79c574d2da2475b212. 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/SE5751872771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f81965792b73c9043e616fe92270fd2b08237556513f673a3c0767b1dc359d9. 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/SE5BU1860555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ef1ed8bf6931a0e955c30e29520de1642bd3c2248e7659b1fea0e764c02d3. 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/SE6A92089060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c904fe7cb45fba3c859f012ecd98cd787414726b0934e8d69903ee769697e2. 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/US7VG2067437.