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 0x796302f63dd8958b3b362fa805d88c1037ce0428bedaef0683b1c9be59a8c7b0. 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/b8e8ad1a-e1de-4539-9ea2-796c723d3495.json and https://artists.proofprofile.net/proofs/artist/b8e8ad1a-e1de-4539-9ea2-796c723d3495.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 0xc3f5f92a66cb62c3ad85f69f1eb04cf5cfe45d14fdc27bd0c325201fd0187821. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:31:03Z), 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/BEY900900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a073a8aba47182e8743244d402508f98fddaa340b54e27f2907a0ebd960b14. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BEY900900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf112f87ba51637d8ce4a09eb5d3273c75d25b2677dd9464c23def245c0ed4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BEY900900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7fc59033941005bbf0b94631146076cd54ae852af4afab5ebca8ba2f098d29. 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/BEY901000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99963e2eee10c21509c23e03b7a1664e7de313dc027d3a1395cf8ae7d47a6c8e. 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/BEY901000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cde065393f9d4ecec9582e9f2bc3d29cd010d795dbf20cc275d80fdba6ea09. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:02Z), 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/BEY901000133.