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 0xef47cfbe2585434190d0cc497048c91f19937e67957eb58f1eb47e02b77e66fb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e34beffd-0f04-4687-b324-e73aa85420af.json and https://artists.proofprofile.net/proofs/artist/e34beffd-0f04-4687-b324-e73aa85420af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x248089f9adc5878af69f5b5a031e72a99fcfdbd561054f35edd51a37a6e91f5a","isrc":"QZHNA2469897","name":"El Helicoptero","registered_at":"2026-06-28T20:00:00Z","spotify_id":"6tTbzkiSodZMlyGmIYsuF6","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 0x248089f9adc5878af69f5b5a031e72a99fcfdbd561054f35edd51a37a6e91f5a. 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/6tTbzkiSodZMlyGmIYsuF6.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/6tTbzkiSodZMlyGmIYsuF6.
{"copyright_id":"0xc97fca0aa03a975d798a7569fd2253de378153c202f06c256198aef2afd636e3","isrc":"QZNWT2455608","name":"Que Paso Te Asustaste","registered_at":"2026-06-28T20:00:58Z","spotify_id":"5Dlo5uwRr9OV0LVROhyIHz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97fca0aa03a975d798a7569fd2253de378153c202f06c256198aef2afd636e3. 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/5Dlo5uwRr9OV0LVROhyIHz.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/5Dlo5uwRr9OV0LVROhyIHz.