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 0x654fa11adc852be0b1c29b204dd053d7cb6b35b6e407a5e6492c072bc853b2d7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/958974dc-eb79-4318-be5d-481c5377d311.json and https://artists.proofprofile.net/proofs/artist/958974dc-eb79-4318-be5d-481c5377d311.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xa392e7f3726e6345b10e31456705383095c41f8eff12c56b0acb9248732bdb14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Nyi1iwUFzYk9Mo2KZy724.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/2Nyi1iwUFzYk9Mo2KZy724.
Unbelievable (Hot Bullet, Evoxx, Joy Corporation Remix)
Unbelievable - Hot Bullet, Evoxx, Joy Corporation Remix
{"copyright_id":"0x036804a398ff85880d8e59b59dfbe6097a2b116f995adbd2d259dd4674dbbc78","isrc":"GB45A1901583","name":"Unbelievable - Hot Bullet, Evoxx, Joy Corporation Remix","registered_at":"2026-06-27T02:56:01Z","spotify_id":"3eUZCO047HqnO6e7lFPQ2z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036804a398ff85880d8e59b59dfbe6097a2b116f995adbd2d259dd4674dbbc78. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3eUZCO047HqnO6e7lFPQ2z.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/3eUZCO047HqnO6e7lFPQ2z.
{"copyright_id":"0xd796ae1953ecf392dc7fea2f4ff96ae04d97c64504c9bd109a7ad09aaf0f9971","isrc":"US7VG2088233","name":"Let U Go!","registered_at":"2026-06-24T13:26:28Z","spotify_id":"1AfHZymvvvqhQzuM9NE5ua","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd796ae1953ecf392dc7fea2f4ff96ae04d97c64504c9bd109a7ad09aaf0f9971. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1AfHZymvvvqhQzuM9NE5ua.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/1AfHZymvvvqhQzuM9NE5ua.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6dbe37a2bb13a0093585386a6b6f87422381c1778d2a4bf300f7b4521a462e. 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/47v8dHWA2qh5tnCOtk2KJQ.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/47v8dHWA2qh5tnCOtk2KJQ.
Terra Sem Lei - Malik Mustache & Evoxx Remix
{"copyright_id":"0x11eb22dd307ce332ebe054e919d6397ece339a3ec17377d1004806a2d35b79db","isrc":"BXTHF1700005","name":"Terra Sem Lei - Malik Mustache & Evoxx Remix","registered_at":"2026-06-25T21:09:15Z","spotify_id":"3rT8vrBfs64FkJGLW3pX3M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eb22dd307ce332ebe054e919d6397ece339a3ec17377d1004806a2d35b79db. 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/3rT8vrBfs64FkJGLW3pX3M.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/3rT8vrBfs64FkJGLW3pX3M.
Are You Down - Gustavo Mota & Evoxx Remix
{"copyright_id":"0x41b68007c8cb25cd295aceee2d459226308cf3debe509836a1cd78ea87d5a402","isrc":"BEIW12200481","name":"Are You Down - Gustavo Mota & Evoxx Remix","registered_at":"2026-06-09T17:32:41Z","spotify_id":"5KgpPtYgMUhzhDzCOIiKTr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b68007c8cb25cd295aceee2d459226308cf3debe509836a1cd78ea87d5a402. 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/5KgpPtYgMUhzhDzCOIiKTr.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/5KgpPtYgMUhzhDzCOIiKTr.