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 0x96ed31d5d1f62026ba3fe831f50fbb849892240eaf0b864d3d811dddd8a17ad8. 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/7a2daad8-1c0f-4cb5-bb41-e22750c7dd69.json and https://artists.proofprofile.net/proofs/artist/7a2daad8-1c0f-4cb5-bb41-e22750c7dd69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Where There Is Happiness There Is Happiness
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 0xe9b678cb9f9d0c5592b89ed3ccedc86806c1bee86eeff9b8bfe763ee359a5194. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA0WS2418501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed5edd01b756baa81bd8c1de9dd1a3416080e92aaeb08ce2344e852f2e7da7d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CA0WS2418504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2169d0ad2c30549a6291e580eea13ea5a30a43757248786928d921bc1b58de. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CA0WS2418505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631cacc5f417724f58eb1c192d08649ef496c1d3fe03cff29e8674dbb5d26523. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA0WS2418506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbda41bd6ac939e8d01b178384490549a0b04db3f141cac904d2083011fbdae. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CA0WS2418507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb0dac793e4821babe2fc36fc3672359675c549d183eb5f01887027bf9b8186. 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/CA0WS2418508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4f5fcbe6c550462f0172ece1dd5462ca9e16c598adbd828e6a4dda44c5760. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:50:45Z), 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/QZQAY2582080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e57217cd106809e5c36b95411b9ff798c9c5da56ebd2233203218e47d0f3c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:44Z), 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/QZQAY2505848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1e96f725d418c94b43bf1a73b619948bd184741f94a139c171e5f936304dac. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:53Z), 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/QZTLA2540335.