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 0x8505b42b925d139c7684a81de8f3e784a2bfb0904cee52001b65796da1afcb32. 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/734648b7-49dd-422b-ba7d-ec9d1bc4bb35.json and https://artists.proofprofile.net/proofs/artist/734648b7-49dd-422b-ba7d-ec9d1bc4bb35.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 0x6485f0dbbeb1e826e5e14de9aab8455bc43a0983905dbdf5fa798b15412947da. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA011747927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c2c4f48d9735749107b76b1736d481e23cb79cf16cd50fa71fda1d210aa1ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA011747928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ed71dd66f006ca0164262b4af8403bccace0f832c90e39f5c45b549f2baf86. 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/ESA011747929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb99fd96b789edc284456fe7ff3f86c3f7a0411b665fae1201de4743a65e86eb. 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/ESA011747932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd9159ca2a88f235a41b044e21b7fcb6ea5a940b08486fc75c28ceceb47e305. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESA011765351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02dd847628a84a67d709d54c49e20c75399dc7d8cc008110622a542b8f9ac0f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESA011765354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa10a7dcb28ec965e52ed336d74e5b3482ba205512df2ee0471a85d6ee95249. 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/ESA011765365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6026330740f72e78dc5b96dcf49685f6854b507bdfacf91cb67d7eb90717c6. 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/ESA011765367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13259da31bf7d8fc742ce13e802d817cb1a21a13026507f0904a5d519fe276e6. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ESA012185274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f36a1abce19635000f886556dae04141a3ee18fc14b713f001f020631e8124. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:41Z), 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/ESA011520174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa11e3d63a4c2f07aa258055060b378741e6c316d822b3dbdc67b3df73170f2e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ESA011520176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de0a94b98615d5aca79685f3d3461f770711e194f4aff02613542e46f495ab. 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/US7VG2450300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ade9134a22f46ae104500941e40d8d19a2b97de7a0f4759c6f4c382feee123. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ESA011722730.