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 0xeeefccbe7d0e87b6a055e844527d709b5c355bec56e369dc69cb694226120ff5. 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/fe2cd1f2-205f-4e76-913b-79b0d0e13099.json and https://artists.proofprofile.net/proofs/artist/fe2cd1f2-205f-4e76-913b-79b0d0e13099.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 0x14f31d0767b6aed74b69b6f65fa6c080916e3d916e03b9e9223a47d3587a57bc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU5712110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230f58e8156c9944af48ee33792a4ce9683c34a3511e6608f3ab9028e5a8ac2d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU5712111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a11852cb929a4692a7c1af4bcda7e303523e7fff07d15414629aaa0302ddb7. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:15Z), 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/GBSMU5712112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ba99eeedce1cf890b75309f58353037a83e831a7b8130ed087a3ccf7c898cb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:28Z), 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/GBSMU5712113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f9da9cb70fd0abff39526bab35151b410b2e24bcdf271db618c58cdd687d95. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:04:06Z), 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/GBSMU5712114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eaf0cd48559221bda8c5a6691c3ca210228e28cb756e1bcbcf67f9ed9890e2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU4999781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9c28c6fbed604df79ed487b2285edccf96a8f48d2462db94973b4f784819b2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBSMU4999681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3629f300fb73787e69d300040e89caedd2b3e84702f7dd213b5abfa0317154b1. 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/GBSMU8102102.