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 0x7eb3f48bf0b3923823d78ace723a8cbe2e3a7e7e5d6327c3682b7411e02489b3. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc462520-5e6e-4965-906b-1b1f352df1d0.json and https://artists.proofprofile.net/proofs/artist/dc462520-5e6e-4965-906b-1b1f352df1d0.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 0x8578558b157ade6671ac594a413a2b95cfae59b83f62571b30588bce7506309c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBKQU2455214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3c8b64f20af4ba0833268dd6ce9cfb04514dcb7723deb5f26add124b46ca37. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:29:00Z), 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/GBLV62408081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94067fb2f681bf4a92ade09a99457a494a26f939ae416db87ea3ab939a23a3c6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBLV62408082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba36706ff01c2945fbd84e3334d9aa3d8393b04370ec4a3a742fd5d3c5bf83d. 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/GBLV62408083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0f6dc9eb4f250e593550bddad67ed673fc10c37dbde07a9410d7f38e55b62c. 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/GBLV62408100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698aa72902eb531d87986eb77015504fa74d587af9140cb78aa5d7a1a9962759. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLV62408524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff481cb1cde303afca9bb521937b1fe0f3decd1de6c1413076cf374c9296820. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBLV62408525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a62d01ace01a06b5aab41f36d37e7a119c4877440ae16dafb9105299b65476. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLV62420278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d12648569341264d6315d5f85b5d2eb17e59c3a0a9a7f62d22a481c0086e80. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKQU2536547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfb620b37c001f30221ec6317aa6e3ee1a0f35b1365ec368fad6c7028520112. 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/GBKQU2536548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1147c4fbad164c0b8dfda1481d35191aa0964143fb76619f92ef3c9f032522c. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GBKQU2536549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ccfd757e6cd7aa0e8c71ecd24d9e7aea7f7cbb690f92acfeabc9a4138c1148. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GBKQU2536550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2752cc2e6f4ff1c281e07291c752f8970f4ed3eb8342d944c63dce910ececfe5. 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/GBKQU2574015.