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 0x1513d0450bae4c1375e0f7fd936776b87ebf3b81d8f8734c5987f153e133fdf2. 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/7714991f-47fe-4f46-89fe-294060f0465b.json and https://artists.proofprofile.net/proofs/artist/7714991f-47fe-4f46-89fe-294060f0465b.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 0x5e6fb759f83360bf32c2e0d9104664272ce064beca6d194651cd11e6319db66e. 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/5IPnhsTcwKi2L7ExBUxxKW.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/5IPnhsTcwKi2L7ExBUxxKW.
{"copyright_id":"0xf6411c9ae9cdc16589186b58abd536aa27cf2f48b370800cc75b055c8e56f53e","isrc":"QZW9L2377832","name":"Milonguita - Acústico","registered_at":"2026-06-20T04:12:59Z","spotify_id":"2MQ1ZLXrezenCEyyM0l9Y9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6411c9ae9cdc16589186b58abd536aa27cf2f48b370800cc75b055c8e56f53e. 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/2MQ1ZLXrezenCEyyM0l9Y9.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/2MQ1ZLXrezenCEyyM0l9Y9.
{"copyright_id":"0xf6411c9ae9cdc16589186b58abd536aa27cf2f48b370800cc75b055c8e56f53e","isrc":"QZW9L2377832","name":"Milonguita - Acústica","registered_at":"2026-06-20T04:12:59Z","spotify_id":"1SY0KzqQEoEMsLLKhO7tqf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6411c9ae9cdc16589186b58abd536aa27cf2f48b370800cc75b055c8e56f53e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1SY0KzqQEoEMsLLKhO7tqf.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/1SY0KzqQEoEMsLLKhO7tqf.