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 0x4ef0dd455fe74da3e05b838dd18fa372fb50b5441bf09d21f22660b64dd8ae33. 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/d8dd36b8-13ee-4202-9261-f5244a3ecee6.json and https://artists.proofprofile.net/proofs/artist/d8dd36b8-13ee-4202-9261-f5244a3ecee6.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 0x0ae052f99d927e382c330da3cce00c2d692554cfdbc0200f1651e8d1a45ad801. 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/6fSK1GuIUqch1AYcArWp8c.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/6fSK1GuIUqch1AYcArWp8c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ea993395efe0d5fae9aaaddf37441218fc560139d8a86a0aad4368d2e597b. 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/3lH3QnOvx9mia6AsSUBqrO.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/3lH3QnOvx9mia6AsSUBqrO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16b08391d93e442470fb98cc2c382ba61a9b66a61175170a747cf542026479b. 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/0pDJpUxuLBZzkAbqX5hsqD.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/0pDJpUxuLBZzkAbqX5hsqD.
{"copyright_id":"0x2cf38f2dbb00810c3c00be9366e7d10c6d9cc47ace1fac72bb22d2f3ab01811d","isrc":"DERK42000041","name":"Sanifair Millionär CYPHER","registered_at":"2026-06-05T21:12:29Z","spotify_id":"718KcGGi2rzXSv8WdRd3W6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf38f2dbb00810c3c00be9366e7d10c6d9cc47ace1fac72bb22d2f3ab01811d. 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/718KcGGi2rzXSv8WdRd3W6.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/718KcGGi2rzXSv8WdRd3W6.