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 0x30fd690c0309bb0f3382aac2ed660ca0f019517634b5d30867a9499f7306c93e. 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/2b94930b-4bb2-44e7-9f58-ff388cce3915.json and https://artists.proofprofile.net/proofs/artist/2b94930b-4bb2-44e7-9f58-ff388cce3915.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 0x3b277f5c5574193d2e44bfd22a18ed678b4f2402554a457971f02e7b7a2fb689. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6bvB08Y32EH9XsQERtwjIT.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/6bvB08Y32EH9XsQERtwjIT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b277f5c5574193d2e44bfd22a18ed678b4f2402554a457971f02e7b7a2fb689. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/16HPZ60wrTdTpbDUCRFXXP.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/16HPZ60wrTdTpbDUCRFXXP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc442e33cd66bc63b7dd097c7214231240c2c42bb7263ec6d48df61a85aa8ad50. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0m6qRc8GMCjsRlwMm0QJOu.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/0m6qRc8GMCjsRlwMm0QJOu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc442e33cd66bc63b7dd097c7214231240c2c42bb7263ec6d48df61a85aa8ad50. 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/4lrFTfmDLIZf7zE7gmbnJx.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/4lrFTfmDLIZf7zE7gmbnJx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82c43cc919ff7b6794df8e2e0d7ec8f162e14886e75623217f7017e0e58199d. 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/5gCM2tUsw4Aei7WQ4SMD7h.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/5gCM2tUsw4Aei7WQ4SMD7h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a1155c2530e123a1df4f9ccd6ceb895e1937639aa05570d2d90e40765f924. 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/3Oz8t4roLtzikEU2t7aJTF.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/3Oz8t4roLtzikEU2t7aJTF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e14af87a79536ec1d67d148eb21b78ace01e3552c8c0d6479f7ead7ed116a. 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/0SU3Gnfgui4If3eXXOWa3w.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/0SU3Gnfgui4If3eXXOWa3w.