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 0xe08357cf9a9c4ddc413a0ebc4f06538fefab343703a7581dbc660af9b45cbac8. 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/a142a1ed-e0a6-40d8-bbaa-0484423d7c27.json and https://artists.proofprofile.net/proofs/artist/a142a1ed-e0a6-40d8-bbaa-0484423d7c27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Circus Is Coming To Town - Remastered
{"copyright_id":"0xf4ea627825d27e884071a902bc5916970c7b6e87ccd73a6ead2d01f3fbb15d21","isrc":"NLC282400390","name":"In The Summernight - Remastered","registered_at":"2026-06-28T22:50:39Z","spotify_id":"3qzAwvdP3qOn7Az1wQqVDA","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 0xf4ea627825d27e884071a902bc5916970c7b6e87ccd73a6ead2d01f3fbb15d21. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3qzAwvdP3qOn7Az1wQqVDA.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/3qzAwvdP3qOn7Az1wQqVDA.
Ding-A-Dong Winner Eurovision Festival 1975 (Remastered)
Ding-A-Dong Winnaar Songfestival 1975 (Remastered)
Ik Heb Geen Geld Voor De Trein - Remastered
Down Down Under The Rainbow - Remastered
(Do You Wanna Play) My Rock And Roll Song - Remastered 2024
Greenpeace (English Version) - Remastered
Greenpeace (Nederlandse Versie) - Remastered
(Do You Wanna Play) My Rock And Roll Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b737189c3b0ce442c3a2c508f1ad38ad22e356d2af7614caee94b9ae2d1996. 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/1UrZB49sPYlTuNA7fdC0cb.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/1UrZB49sPYlTuNA7fdC0cb.