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 0xc9c889382906ae52a15548490b9d6be43c7f1b353bfd3658eb571d1fdc65628a. 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/58fbc737-ea5d-4c08-8ccf-37688bdf56bd.json and https://artists.proofprofile.net/proofs/artist/58fbc737-ea5d-4c08-8ccf-37688bdf56bd.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 0xa811fdb09163fc017256ac5d93a4192948965ab525ac5ef8c4af9728ec66f1f1. 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/07NrqAlKP8BZg0skUDePAZ.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/07NrqAlKP8BZg0skUDePAZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01895e6f8e7331c647dfee0dcaf8c4ee1105d8641cbd30e3c4b68e9fe56b135. 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/0R7Mre0My6gfmndq70mMf3.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/0R7Mre0My6gfmndq70mMf3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cee2fca79e004f83eaa7f50de58cf879198d33538af7e407c9ab253498c8a2c. 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/159RCM4Odlhm8kMkODrAcY.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/159RCM4Odlhm8kMkODrAcY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af0218489901f62ebc92db4284a8b8c3eddd2277d4331511c4fa661d82a4d12. 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/20ReaAYJ9psqxRtBx9b9dx.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/20ReaAYJ9psqxRtBx9b9dx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf17f0cc9b3b015a62519bc129045b3d6c3acfdc52e7e68cfdfbb1407d51d1e4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08GPmDgx8k3QepfQBPbmDf.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/08GPmDgx8k3QepfQBPbmDf.