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 0x8be5ceab19de8e7ccf5d171ff6dd6f338bc6c8c5a0613e1e1c7c9909f0a9a378. 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/ed96fe8c-66ed-42ed-be46-53ff4d1b44c7.json and https://artists.proofprofile.net/proofs/artist/ed96fe8c-66ed-42ed-be46-53ff4d1b44c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Higher the Socks (The Downer the Foo)
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 0x64e05d2c5bce26346cbfeb2fdf33b8e1ef6f72558fd16253982443457054dc25. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKELY2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cedd7e3a1bb7e0bfcee17af128e7027a56c13ffefecb28b1ce27977d76205d2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:52Z), 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/UKELY2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d637ed63cdbae45381817294ae3f2621bbf2baf9ed682771b579745324cc096. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UKELY2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011524c44700df1e196297b6144e2bd1447e1cd0bcc2a9217bcebcff3b1cf82. 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/QZHNA2340446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2585fa3cf561bf32b0d8d39d9ab3c39fd36c2940857631ee95c6e321fb8410c. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:25:25Z), 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/QZNWX2406544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41793fa4ee505e71fb20ce5826eb603c2612ef776c45e77fc48f3116dc9bd7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWFV2486361.