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 0x1d945e05bc6b59ea62462e413d7bab9460622b8a90e5cba5bd6f195839823750. 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/d51fe1eb-fcad-44e0-bd91-3106cb6d05dc.json and https://artists.proofprofile.net/proofs/artist/d51fe1eb-fcad-44e0-bd91-3106cb6d05dc.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 0x832f8aff132dd6813b048090b055302f7dbfffba531e1db1e14d3af1b3296486. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GBSMU8869528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e03b598dcd2899544df394b4e0303a84527719c322df1a9dac4192ecd68557. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GBSMU8869529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a25fd1cf088cbfbf5b78ddc3b827457fe27df4e174d43011f27f20baf3820. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU8869530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aa0431a2f04c60dfe31a77410efc9ff0a875e088689b88bbef3a8ce0dfda8e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:20Z), 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/GBSMU8869531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c54ed1df3bff1a025050bde9edd32b694af809f21800b464cac41433044b0f. 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/QZK6N2261791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf152ebae575892af388ab3cabb3c0e39888fcb1ae6ff6f311f526628c2f127d6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:53Z), 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/QZK6L2471686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d96dff4ee384777bd3f194df336994ca922d80b863ee1302c564fa50bd24ed6. 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/QZTB62480038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fa46c018efc63fee86b624ce8374fabae628b6784bf9b7f67d13b3f84de4d8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTB62480039.