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 0xb9e6f919155a0e88c1df6d073ab34d04821a73c957e056fb62a582222998749f. 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/7aefd408-b83b-4420-ac27-099aab03c4d7.json and https://artists.proofprofile.net/proofs/artist/7aefd408-b83b-4420-ac27-099aab03c4d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x39aadb7eac8670c6e31ed54b3ce76c422c483a8c141b9dff73dbb449f0725861","isrc":"QZFYY2010487","name":"Si No Me Ves","registered_at":"2026-06-05T14:17:09Z","spotify_id":"0Crwar0vuFgUkyfewMbgQn","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 0x39aadb7eac8670c6e31ed54b3ce76c422c483a8c141b9dff73dbb449f0725861. 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/0Crwar0vuFgUkyfewMbgQn.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/0Crwar0vuFgUkyfewMbgQn.
{"copyright_id":"0x3f422c882005fd759ef77cfc544febd58f0ffb4c3a3608a0411f86dc74a6a460","isrc":"QZW9M2449750","name":"Me Perdí","registered_at":"2026-06-10T21:26:38Z","spotify_id":"15nqqepbdHdSBfubMPmNVI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f422c882005fd759ef77cfc544febd58f0ffb4c3a3608a0411f86dc74a6a460. 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/15nqqepbdHdSBfubMPmNVI.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/15nqqepbdHdSBfubMPmNVI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb2119cc0c81162cceb38d0f60cf71563167b58d0a03871acdc896732a2a666. 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/0ncrDyWG3Lm3qxggGlhYpv.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/0ncrDyWG3Lm3qxggGlhYpv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb2119cc0c81162cceb38d0f60cf71563167b58d0a03871acdc896732a2a666. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3GiZSJa9xhbWlWftuKJ5pf.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/3GiZSJa9xhbWlWftuKJ5pf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff1b6f38f6b3986ae2b9f7274199be63e6209534daf34bccdba3c20f06c002a. 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/1mfplO0whg6jGS4oRHRjxD.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/1mfplO0whg6jGS4oRHRjxD.