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 0x715ac181267106659aad44bdce77221e49658671e6748bb83f8e992bb5322cb4. 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/26d4c845-18f7-41e4-b23b-486e21fe2439.json and https://artists.proofprofile.net/proofs/artist/26d4c845-18f7-41e4-b23b-486e21fe2439.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x542b8a6108dd2d1c4e0d2c41b3e7569c2075ff1c762e6e1a89fe38aa2c37d37e","isrc":"QMFME2388343","name":"Heartbeat (Speed Version)","registered_at":"2026-06-29T16:06:38Z","spotify_id":"0i8cyK4B4pk5ixhzkqJqkT","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 0x542b8a6108dd2d1c4e0d2c41b3e7569c2075ff1c762e6e1a89fe38aa2c37d37e. 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/0i8cyK4B4pk5ixhzkqJqkT.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/0i8cyK4B4pk5ixhzkqJqkT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aa251fa4a46e8b95b73a2c27d24e71213ac3eb94071352788fd436d8b55bf0. 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/3Y3t6lx9SGw2L334BjboCG.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/3Y3t6lx9SGw2L334BjboCG.