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 0xfe9eba7235a687106483f0e8538729415a84efe87350bf0e7def01414d76b918. 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/61dbe0f4-b557-4760-958c-70b000b18677.json and https://artists.proofprofile.net/proofs/artist/61dbe0f4-b557-4760-958c-70b000b18677.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 0xee0795b8e5204168cc5c78e0bc21e10d497c1e151c159ec096eeb5f955222f93. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUB422202406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246030a6da08384b5fbcd171e382d7eac30dc3fb0745e6036b93d19b61c264eb. 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/DGA0P2375001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc844bea6ed138873e090b73dece7d38b82ce1e0931b0d9fb16ffa3ffdc127. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:46Z), 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/FRX452433678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb618a2166817091088dc5b7d3078f3e276a933493723dd256b2be0cfeb554365. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DGA052337895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b88b6a9da07c05b03aaadc3cf3ca20fbb31a023aba5bc7270ae5517340e68. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR10S2555828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9834404f30d3c687bd8849ccb90356cc725726f8df5eb3927982891cfdabef32. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUB422501446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dd484f1ba4183feba3b528bc3146e50662e882bc47e81d42375e8b3c40863b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUAGT2531328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9ddc5967bd0cde66aabf2a09c158d7994103131f5bd0477c1238ee08369804. 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/RUB422502947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8eca0559e8e00ec46a3cbafbe07ec8df77d6ff7cc128185ceadfa69f3d5dee. 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/RUAGT2592234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc13686d88142e8f65a90e5ef3893b49f9adfb5e2b29b96269eceef54dead733. 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/RUA1D2407145.