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 0x29a2bbe951a81bcf19d414d824fc37652a4e6390be98d568115d070c0d965327. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68ff8808-26b2-4a2c-b0bd-758242041001.json and https://artists.proofprofile.net/proofs/artist/68ff8808-26b2-4a2c-b0bd-758242041001.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 0x5b9949303c55bfb3d2c881b43441406c461c4dc89246b86830ca16ed3bc6f554. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX762130695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928cb408eba8d0b555626aa3ae093c92d6cbf840f617c01ab1890cd779a15edd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:43:02Z), 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/PLR862200552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376cf786001b773bcad5b485bc686368e80578cf0430ce065b13db59b50994f1. 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/PLR862200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ebfe22926b0cc9f0b3394442fe50ef4f406187590ccb5c0ff50f6852ba6ea7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PLA552300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaba6002f9fafd38dd44c54e6bdd09f66a61a89563b325d10d0858de5e8956a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLA552300352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef145a5f915c7e3843a5f59552ffab65f427a5d235688d0d290eed49ac205fc. 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/PLA552300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74e515b58fd011da714f574103626fab5359d4f056e8505bdd997e32923c571. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/PL71Z2406703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef606c7e459da5fe8f847282640b332a0477de33070b86d98981c31f004f9964. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/PL6A22400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98bb2eed776d1d56185ccc642fa24443c673a0bc742a8ebff725028bfba432e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/PL6B02404056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29082068885ccaeb99d78498c60bdfc0102f3112d1de0574602dd337d535d89e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:34Z), 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/PL6B02481106.