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 0x19a7cc4881b3e02a0ee3fd21149941e4abab8870bcc9497a653a2498fdc207dc. 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/159e2056-e6c8-417d-9fec-84ad69079fae.json and https://artists.proofprofile.net/proofs/artist/159e2056-e6c8-417d-9fec-84ad69079fae.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 0x8ef5170ca49bab7a6d4a97aa408c39e2a9674ebdbc6c40f9dea7028d682b5096. 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/1D56apFwdNNNQjpr7Tqreu.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/1D56apFwdNNNQjpr7Tqreu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ccd95b7dec4b43fc96788a6e9bd149590e9ab4ad0b7f2dc98aa7bd0a908c9f. 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/4aVBMoPLR0prsmBUxDma6Z.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/4aVBMoPLR0prsmBUxDma6Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399830deeec7b4904680fd1d157c4d8210fe1bed8a7be355de8f6659786d034e. 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/1ULsc2gJQhQZ7eL7eR1jXR.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/1ULsc2gJQhQZ7eL7eR1jXR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9cd6daaeea96553ab0eb906e263405f41a6e7c9ec123de2d1ebfc15c6fdbc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/21Lxg3QhzeeASEGLxqyryq.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/21Lxg3QhzeeASEGLxqyryq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9cd6daaeea96553ab0eb906e263405f41a6e7c9ec123de2d1ebfc15c6fdbc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5FX3h7uT8J3EngQ24yYZ0T.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/5FX3h7uT8J3EngQ24yYZ0T.