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 0x93a3a8a2b58a933409681f4a5723ebd6a0558e3d5291dbf08aba6176d34cf2f4. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e72c8271-3aca-4872-8024-dc7c090d571a.json and https://artists.proofprofile.net/proofs/artist/e72c8271-3aca-4872-8024-dc7c090d571a.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 0xddf8c31a606be38ace7a420c86bd0a561db990242c90d211a437012f7d56cec4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6P2166854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6832be463aa0543ed2b6a5efec117ce592af3f9ecf860cc3951d7f3992445a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA52577134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ff6885f84b9ceca06a314ae5c7576eee3373ec39b5ebcb6dc92309adabc01. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZES82539712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3c5a76838fb9a80b735b3f3d0b3349e6c02ecf9a18f0abd048faccb83299f7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:01Z), 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/QZHN52583781.
ITS GONNA BE OKAY BUT ITS GONNA BE DIFFERENT
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf142dd08d9722f4755302a7cf4fa36fd7a3640cc5c1c01bc31392f419a4b271. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:14:02Z), 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/QZHNC2500912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2679afb370ecdf2d9760983e400963ba9edda96360e6a26874535adb869bd56. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6M2567443.
THANKS FOR EVERYTHING I HAD A WONDERFUL TIME
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a2244eda0e0cfc83cc7301c45b8deb095ebf0a2bb3d549e1b000a2c8ccf14b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:51Z), 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/QZTAW2534247.