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 0x00d3dae9c1a5621f5e6876da590b6f97d3e08356d582af62f5d4d43593c5c073. 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/2efaaccc-6093-4e76-8e73-7b3d3f76ec0b.json and https://artists.proofprofile.net/proofs/artist/2efaaccc-6093-4e76-8e73-7b3d3f76ec0b.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 0xa9e5431412cd95cd1f284c922fae853f0e494ef9a81a5629fafde45c7949d20a. 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/3pXzCePECHFJIcRDBMyDfi.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/3pXzCePECHFJIcRDBMyDfi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b74af5df13eb61747f9bd2c70a5fb594490986956f41b1e9bdf30b36218f98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4EL9jlxVhcgrHaLO5qxYyl.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/4EL9jlxVhcgrHaLO5qxYyl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0a8358b7261af3e61392021b46a97e125180004a6b81e8c3a3b4a9209e8bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7J7mUwcLxHzgxCAznYkd9i.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/7J7mUwcLxHzgxCAznYkd9i.
{"copyright_id":"0xf2c2089ecc5ff2dabfa0069394acd2d5665debea5e4e7d9b456bb54e0bb7f5a3","isrc":"QZNMU2444788","name":"BOOM (POSS3 CUT)","registered_at":"2026-06-10T06:31:31Z","spotify_id":"2lEIjFGasJYMqCoBjBW3HY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c2089ecc5ff2dabfa0069394acd2d5665debea5e4e7d9b456bb54e0bb7f5a3. 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/2lEIjFGasJYMqCoBjBW3HY.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/2lEIjFGasJYMqCoBjBW3HY.