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 0x94f19c9e17ab2ae4a471dc7c6a1cf05c4de2303a1d5403a3cfdf24ac12cc2f22. 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/f78954a0-25fc-40a5-b8e6-c60c3c148e4a.json and https://artists.proofprofile.net/proofs/artist/f78954a0-25fc-40a5-b8e6-c60c3c148e4a.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 0x49442055997bb9fee7bae00c494eb0169d9e2eeb07b0e2cfb8db62c90f8f4df4. 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/5eO42F5x1VHAAgEYzse8Ux.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/5eO42F5x1VHAAgEYzse8Ux.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49442055997bb9fee7bae00c494eb0169d9e2eeb07b0e2cfb8db62c90f8f4df4. 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/6t2gwKDfIKmpB52te0mmXM.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/6t2gwKDfIKmpB52te0mmXM.
Bonnie & Clyde (feat. Deno & King Promise)
{"copyright_id":"0x1699525ea5dbd6f0cb850b21fd8e2f63424b935e6f3908a55a723eb8857f0065","isrc":"ZZOPM2106703","name":"Bonnie & Clyde (feat. Deno & King Promise)","registered_at":"2026-06-20T17:16:23Z","spotify_id":"7qRpEMjyIYQRBuAoXZvZTh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1699525ea5dbd6f0cb850b21fd8e2f63424b935e6f3908a55a723eb8857f0065. 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/7qRpEMjyIYQRBuAoXZvZTh.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/7qRpEMjyIYQRBuAoXZvZTh.
{"copyright_id":"0xc266316c1c54bdb3d9387d3df115147bed96849a800c4a4535a221cc8bef141d","isrc":"GBAHS2200994","name":"Chale (feat. Clementine Douglas)","registered_at":"2026-06-06T07:50:48Z","spotify_id":"7xY4usHueVpDIWU8P9FnkV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc266316c1c54bdb3d9387d3df115147bed96849a800c4a4535a221cc8bef141d. 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/7xY4usHueVpDIWU8P9FnkV.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/7xY4usHueVpDIWU8P9FnkV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583639b49a10617c382be6b20e6b82e5a00e2d52943d05c7b6b024355f38bed0. 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/5lAOltJO0aw2FUP5Use4cD.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/5lAOltJO0aw2FUP5Use4cD.
{"copyright_id":"0xda0c4ee16adf5cd4f6ff2792c316411f08840d1fac5de0f09898a12fa05820b8","isrc":"TCAGP2276938","name":"YAH Know","registered_at":"2026-06-05T10:59:03Z","spotify_id":"1LzovYtOvkODueiluGyRzF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0c4ee16adf5cd4f6ff2792c316411f08840d1fac5de0f09898a12fa05820b8. 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/1LzovYtOvkODueiluGyRzF.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/1LzovYtOvkODueiluGyRzF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67163b8579587492832dc6bf6de0736be19d0c761b2ab14a06885fd8d35ee99c. 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/4hlm377PiUfxf6kZ1lINWQ.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/4hlm377PiUfxf6kZ1lINWQ.
{"copyright_id":"0x53f50965779c8e073e79d4be603a8afa1fe40fc94b5d86cdb7e001c62e91360e","isrc":"GBARL2101238","name":"Ring My Line (feat. Headie One)","registered_at":"2026-06-08T16:10:41Z","spotify_id":"3zSxIsQe6ezMc1Xr8Fuvz4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f50965779c8e073e79d4be603a8afa1fe40fc94b5d86cdb7e001c62e91360e. 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/3zSxIsQe6ezMc1Xr8Fuvz4.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/3zSxIsQe6ezMc1Xr8Fuvz4.
{"copyright_id":"0x1699525ea5dbd6f0cb850b21fd8e2f63424b935e6f3908a55a723eb8857f0065","isrc":"ZZOPM2106703","name":"Bonnie & Clyde (feat. Deno & King Promise)","registered_at":"2026-06-20T17:16:23Z","spotify_id":"25BulCXM9yRgyY3XhBuH96","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1699525ea5dbd6f0cb850b21fd8e2f63424b935e6f3908a55a723eb8857f0065. 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/25BulCXM9yRgyY3XhBuH96.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/25BulCXM9yRgyY3XhBuH96.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2a676657afede50972a3d2b3f26a22db960f2b428b203335e51e7b774eb998. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2uI8xXEIA9iN6zv4ZxVicl.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/2uI8xXEIA9iN6zv4ZxVicl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2a676657afede50972a3d2b3f26a22db960f2b428b203335e51e7b774eb998. 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/2fMtRigMAdE6hXHm2WrzlQ.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/2fMtRigMAdE6hXHm2WrzlQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6551553bb1a7163629bb06366ad272b3163681875fd551f2800f2d40d089bc. 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/7B1VbibAlxiMdpxF4lsW7Z.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/7B1VbibAlxiMdpxF4lsW7Z.
{"copyright_id":"0x3a35827814b6b9964af0361559982e6fc48467949a0e0b2f4b73007bab342eb3","isrc":"GBARL2300820","name":"Terminator (feat. Young Jonn)","registered_at":"2026-06-01T16:41:38Z","spotify_id":"4jyZRIiSAEkziHwhZsfmXc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35827814b6b9964af0361559982e6fc48467949a0e0b2f4b73007bab342eb3. 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/4jyZRIiSAEkziHwhZsfmXc.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/4jyZRIiSAEkziHwhZsfmXc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0c28badc9a642550a5c7bc9e9dd9702ea9c370558bfcc50021d82889547700. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5xfqYnFCpzfNr6Nt1RTgvH.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/5xfqYnFCpzfNr6Nt1RTgvH.