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 0xbe73c454206fcfe595563ca417f38ea148266568f72010751d8fad14faf048ba. 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/94f52372-2792-4921-9662-d068a2bc5224.json and https://artists.proofprofile.net/proofs/artist/94f52372-2792-4921-9662-d068a2bc5224.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x7f9bc32be51d6010fbd110e9788002a6a98c140d922e45f8fbcbaae615e2bc88","isrc":"CAN112401080","name":"UFO - Extraterrestrial Version","registered_at":"2026-06-21T12:36:17Z","spotify_id":"5pl8pugPyMSQIyEnMwe8lJ","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 0x7f9bc32be51d6010fbd110e9788002a6a98c140d922e45f8fbcbaae615e2bc88. 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/5pl8pugPyMSQIyEnMwe8lJ.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/5pl8pugPyMSQIyEnMwe8lJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7624d0812c09ae4ef5e8f8294dcd56e785938baa8238932eae9746b3274ff32. 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/1nsoAP67otdfDV4PngBShZ.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/1nsoAP67otdfDV4PngBShZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94447c538ee49e3552dd86c3911d71e74b0e1d7295424adf8ab32a975010d6a5. 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/1fKJPWv79EJs5FwxKvDS5p.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/1fKJPWv79EJs5FwxKvDS5p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7624d0812c09ae4ef5e8f8294dcd56e785938baa8238932eae9746b3274ff32. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4EFt9osY7myZQFHucBqkaF.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/4EFt9osY7myZQFHucBqkaF.
{"copyright_id":"0x7f9bc32be51d6010fbd110e9788002a6a98c140d922e45f8fbcbaae615e2bc88","isrc":"CAN112401080","name":"UFO - Extraterrestrial Version","registered_at":"2026-06-21T12:36:17Z","spotify_id":"5tXwwnu1Rl5neegVp5YM5j","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9bc32be51d6010fbd110e9788002a6a98c140d922e45f8fbcbaae615e2bc88. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5tXwwnu1Rl5neegVp5YM5j.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/5tXwwnu1Rl5neegVp5YM5j.
{"copyright_id":"0x4db1235a2fdd0a8b9542d8382e5a815f97f5aeaee5988510cdbabd455f08dcfa","isrc":"AUNV02100263","name":"pisces rising","registered_at":"2026-06-20T06:47:40Z","spotify_id":"4Ax85Ep1ilnjG6vS7ziHx6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db1235a2fdd0a8b9542d8382e5a815f97f5aeaee5988510cdbabd455f08dcfa. 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/4Ax85Ep1ilnjG6vS7ziHx6.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/4Ax85Ep1ilnjG6vS7ziHx6.