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 0x17fac2f563409c565734f86a110741405108084b9f7ef5bf2b380e4fe9673eee. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97b61f07-2588-4e21-ae29-3fc0329834c3.json and https://artists.proofprofile.net/proofs/artist/97b61f07-2588-4e21-ae29-3fc0329834c3.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 0x75562f7cb2bb907aa83821a858a29defc80ee48a3e1b608e5edbe0fc151da34f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FINEO2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c09e8d6372eecdfa1e893da0823951834c3b7d56ed0b298037f0a3da0f7fb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FINEO2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65861ba7c356ce68ff8d1b787ebbbaa81216c47dabe48581d81b851376a734b1. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:30:17Z), 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/FINEO2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb366d8ad8ee516f7ec8d723c248be30233594c53ac2d8733f030f07f3c068a2. 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/FINEO2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2372bc3f0d3dcd723bac590b9501803e67add827b01a0a17a1c2a2f861c9d592. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:32Z), 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/FINEO2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6529e5a0651fbe60129ec7ca0857c85d0c77d0619e9451ae37c293dc2d2f3b6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FINEO2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76e5be90624403831f818386ea447ed1bc8157dc6861b5fabc68725b2f73ca6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:53Z), 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/FINEO2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7bc283a0420afb89d65819f0f08e5313f668f3840ed17ede3b8f8b526aca6d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FINEO2500009.