1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x155e2b62110324e25f405815e29c9fbab7c7d6219939bb2731e0236907161236. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6fdfae1-cefa-41e6-a309-81fa0f88ed26.json and https://artists.proofprofile.net/proofs/artist/c6fdfae1-cefa-41e6-a309-81fa0f88ed26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Périphérie (Extrait de CRCLR MVT SAISON II)
Périphérie - Extrait de CRCLR MVT SAISON II
{"copyright_id":"0x521b64ee45d2134ef06623028f8ed0f2dd861aa5b01cf813ad5caffb3b6fa105","isrc":"ITUM72100377","name":"Mania del controllo (feat. Hache-P)","registered_at":"2026-06-09T17:34:01Z","spotify_id":"20L3eCS3cDsn4gERDfE1MM","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521b64ee45d2134ef06623028f8ed0f2dd861aa5b01cf813ad5caffb3b6fa105. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/20L3eCS3cDsn4gERDfE1MM.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/20L3eCS3cDsn4gERDfE1MM.
{"copyright_id":"0x521b64ee45d2134ef06623028f8ed0f2dd861aa5b01cf813ad5caffb3b6fa105","isrc":"ITUM72100377","name":"Mania del controllo (feat. Hache-P)","registered_at":"2026-06-09T17:34:01Z","spotify_id":"7iqTF9aO9pCaMFkcGfeyb5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521b64ee45d2134ef06623028f8ed0f2dd861aa5b01cf813ad5caffb3b6fa105. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7iqTF9aO9pCaMFkcGfeyb5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7iqTF9aO9pCaMFkcGfeyb5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062811de34e476cc7e4ace0b04fc4c335c0911bfa5ea0ac4e14736bda4d39e3c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7aiF3B1VYMreO2mDoW84kV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7aiF3B1VYMreO2mDoW84kV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86244c805ab6359cd03f7084e286a4530f732af97fa111ca4aecc28997863444. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5c4ENCoS1vJnzZ6NBImghk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5c4ENCoS1vJnzZ6NBImghk.