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 0x327875b453a7db999bbf7fbca225649aa311257dfa7b06c53770cf68fcaa16a2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/476e9445-105f-46eb-9305-d6de78a4357f.json and https://artists.proofprofile.net/proofs/artist/476e9445-105f-46eb-9305-d6de78a4357f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amethyst Drive [feat. Moment Joon] - Remix
Kyokarairuore Koenji (feat. eyezen & Young Delu)
今日からいる俺高円寺 (feat. 愛染 eyezen & Young Delu)
たまに遊ぶ (feat. Lisa lil vinci, Siero & Worldwide Skippa) - Remix
GO OUT (feat. Lisa lil vinci, Siero & Worldwide Skippa) - Remix
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 0x7f46389d7c2b035c3d9870ed13d85f0f817ab521fa62bf20520e7c3206f8c507. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/750Gvbo8j98NJEK820rNw6.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/750Gvbo8j98NJEK820rNw6.
I picked up a prostitute's iPhone feat. Gokou Kuyt
{"copyright_id":"0x6aede8e2669f6ca731089e8f5c0ff07dbd95abd1d8edeb2031bdc5b61c612ffe","isrc":"JPVI02002507","name":"I picked up a prostitute's iPhone feat. Gokou Kuyt","registered_at":"2026-06-21T22:06:08Z","spotify_id":"3qpd3VUDdUfgjKE9vgg9zQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aede8e2669f6ca731089e8f5c0ff07dbd95abd1d8edeb2031bdc5b61c612ffe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3qpd3VUDdUfgjKE9vgg9zQ.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/3qpd3VUDdUfgjKE9vgg9zQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd7c44049739872a982fa935161fd86225cdb3108a5ebf944007de40da58b37. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Y9FZpRLcLjzm1sCDHYZmt.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/6Y9FZpRLcLjzm1sCDHYZmt.