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 0x90a4a86bfae05b4c5dedd412b25c4e2fe7f7c12de54c14b8546f413c173e03c9. 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/5547fa97-f86f-4b69-90b0-0f98d9dc9bf3.json and https://artists.proofprofile.net/proofs/artist/5547fa97-f86f-4b69-90b0-0f98d9dc9bf3.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 0x989cf381cef7e20b1bc6580f14dddff5f5feb006b27c03aab5bca258e0b5c5b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2skn4oTFvuwbXyP1JqxlXi.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/2skn4oTFvuwbXyP1JqxlXi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa258c1e60b191d49d1dd433f9b614930bdae4e6c04bcded64029c7f13bce3be9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2U119jzbBA4ICCdAGicqnC.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/2U119jzbBA4ICCdAGicqnC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25b04f82df038519a04420dcf46fb72d798a90a4c744351ef884e9be9f704e7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3g8MqtFWCGrE5kj11qQDoR.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/3g8MqtFWCGrE5kj11qQDoR.
{"copyright_id":"0xa8bb3f998dac252e0131953496f4affbf441eae19fda28bc746da14fd0db1ea3","isrc":"QZDQH2263593","name":"Momento Histórico","registered_at":"2026-06-29T21:56:55Z","spotify_id":"5Auh3b4kQLi0M8cqBvWm5x","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bb3f998dac252e0131953496f4affbf441eae19fda28bc746da14fd0db1ea3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Auh3b4kQLi0M8cqBvWm5x.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/5Auh3b4kQLi0M8cqBvWm5x.