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 0x79008d66dd2b8f46fe0097a783859504b876b86b4a25b25de11a2fea3be8f234. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e469341-e633-4626-94e9-8b7cb3d2f04b.json and https://artists.proofprofile.net/proofs/artist/5e469341-e633-4626-94e9-8b7cb3d2f04b.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 0x7a009efd60ea4de0eb0f33659dae1ae3f0707846d99fbc449083cc49672b8797. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:50Z), 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/GX3Q92548020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce84271686d1d67a7debc1c69ea2e44d6b7f957d94a8d8614b253d87ee49190. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:33Z), 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/GX3Q92548021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7095f45056c2c96b09a6024f0798d30c64de9c9624cefe7f77d368e009c59828. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GX3Q92548022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3df3d349ec294de95839c79fda45e0fd5a8bcb4177a87161f63c4a8c7c7d43. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:54Z), 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/GX3Q92548023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dcd254ed5c4ff0eb89c05f88a53eb7505a24886b6244bf72afb7c8de130267. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:01:45Z), 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/GX3Q92548024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9b3ab54d48bcfd24b638f22919c672494f0837bed7aed1580b129055558870. 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/GX3Q92548025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eef533dc2a49e3b93a43e0c95eaf9535571424d08e16261e1afda857f76522. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:47Z), 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/GX3Q92548026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04ebaf24b70ec383804fe3e8f70af42544f8a4bbe6378ffe38af95121313ee7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX3Q92548027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe4c8e7a4c130b2f1b9dee3ff328f0da98bd83d107e4cb13476d513be5a17b4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX3Q92548028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4480d4a6f144a8a5bc8d67202cd3f117f2e5a7ccc4c2f395b9662fc02832106. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX3Q92548029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182c8bd3b47a1a4bc887f668529af7aa8c36876721991662f9f2e5d4f15bc423. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX3Q92548030.