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 0xb7a48e23d104a69e8c6c567bcc3da77dd7930318dc279291a32ded90319525b2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa394881-feb0-4226-b047-219b8474e8d9.json and https://artists.proofprofile.net/proofs/artist/aa394881-feb0-4226-b047-219b8474e8d9.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 0x48e2364cb85199e1d55234577add2d02bc611920e3eb2e6abb9489b7b1172a66. 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/QZTAS2322189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458e22be7582f7f60625cc1fdc8d837333d88093a21110c83a6e4da13a6dd083. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB32380494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb484d3deb6b632ccabada5832e25678ac6f653ff23362c53baac03622f1b30a5. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZHN32441002.
I Still Miss You (At Least Parts of You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122889cf21be2abcf6cb58b44ee7a1a3e670eaa74dac81b133cc2461914e3a3c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:41:24Z), 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/QZFYY2568891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68ab4f38160462b0bc0c4d4c4f721d3e49f5632e05fff3055c17f5ce0ff3de. 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/QZTAS2565973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d9eb2d359ec2e735dd668e0911a21b2eb4320ae32e089ff3a6fd990d86ecc2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:31Z), 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/QZRP42504186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5163bcce7d337cc4c76981a844a663173da457eca72ad9ff716c0a415f930be. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFT2581119.