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 0x2cd4196bcb053c6197bbd8b50cbd9c6844420c91d4a785e20a904cc3be6b49cb. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed2f6e9e-785e-4b7a-b49f-edd3d2bea46d.json and https://artists.proofprofile.net/proofs/artist/ed2f6e9e-785e-4b7a-b49f-edd3d2bea46d.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 0x1533c4c47af80c79623ac0e6161a7d6e09ffc3613112ab979208922ff39f3b05. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:50Z), 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/DENI12100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22db53a21ba238c43c2598302c7881f1fd73d83bc5fbaed82ed1cac015502021. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DENI12100031.
Vessels by Which the Devil is Made Flesh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5176a4e41e1e796ca1436ad80bdf7c6b1a2fd8b8f66b0e8ea6e49cf7ca369e53. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DENI12100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485a63e4b7d7b3d82ba7d5702b7c9c6527bcf9cd4a7176701fcbc54a14591e7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DENI12100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc915bf3966cbebf383e8775905549ccc1a620e8a25ec6b9a6d2d18815249913f. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:09:32Z), 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/DENI12100471.