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 0x9e6b902d3b0f68d522ab052d421d22ac01473883c2dddf8dd504766ca6d7aab6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96ffb6f5-467d-49ee-ba25-7d47c1da8725.json and https://artists.proofprofile.net/proofs/artist/96ffb6f5-467d-49ee-ba25-7d47c1da8725.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dat Ene Slippertje / 'n Nacht Zonder Einde
Als Je Lu Lu Lu Lu Lust Hebt / Wie Betaalt Mag Me Bekijken
Lola, Lola, Lola / Als Ik 'n Tango Dans, Dan Moet Ik Huilen
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 0x7b01ac0e151afb255f1e81361b2c5fe5020641896aaf42733abbf05a775ac51c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLA349900043.
Adieu Salvatore / Van Ruilen Komt Huilen
Ik Heb M'n Hartje Verloren / Oh, Kijk Me Niet Zo Aan
Oh La La Alexander / Ik Doe 't Toch Zo Graag
Oh Oh Die Lola / Nee, Nee, Nee, Nou Neem Ik 't Niet Meer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b01ac0e151afb255f1e81361b2c5fe5020641896aaf42733abbf05a775ac51c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLA349900043.