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 0x4135901d399d61ff6c7afbf7da2fe6807b427e8045e8a1dd1e72447d15817fa9. 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/f73300a8-6030-42af-9f8c-6a21c485f271.json and https://artists.proofprofile.net/proofs/artist/f73300a8-6030-42af-9f8c-6a21c485f271.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x60e4ec2cf87c98d0aea3a2a2f1e1e113889aff7922db6f21a4a79c0a90dc8081","isrc":"MXF551304984","name":"Me Dediqué a Perderte","registered_at":"2026-06-05T10:13:29Z","spotify_id":"2QYTdoxUGHFhHlpxvFjY2j","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 0x60e4ec2cf87c98d0aea3a2a2f1e1e113889aff7922db6f21a4a79c0a90dc8081. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2QYTdoxUGHFhHlpxvFjY2j.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/2QYTdoxUGHFhHlpxvFjY2j.
{"copyright_id":"0x79e494523e48b37f993b300bc72c4baaf5ccfd5f2859165d2e72bacbe416ec78","isrc":"MXF551104483","name":"Tú y Yo Somos Uno Mismo","registered_at":"2026-06-05T10:15:10Z","spotify_id":"2NGRNOiXqfNP3PEni4a0xE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e494523e48b37f993b300bc72c4baaf5ccfd5f2859165d2e72bacbe416ec78. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2NGRNOiXqfNP3PEni4a0xE.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/2NGRNOiXqfNP3PEni4a0xE.