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 0x884e344cab4cecfff072861d54a34f2992cb231de8eb5e2a8e780fe7d3a8c870. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c2fc24c-4570-473f-99c8-f4ae8072f53d.json and https://artists.proofprofile.net/proofs/artist/3c2fc24c-4570-473f-99c8-f4ae8072f53d.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 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. 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/6NtVX4qwWMmAtNFaG485iq.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/6NtVX4qwWMmAtNFaG485iq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdd561c70de81e8baf7671a216ba412011a49bd65dedecccf58068b5dcc4df2. 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/6LGGYZgLcUfIvHR5cgUdvo.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/6LGGYZgLcUfIvHR5cgUdvo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. 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/1SecMvAeIG3SKupDj3B2xD.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/1SecMvAeIG3SKupDj3B2xD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0iJ7jjMRopyI6Jbe9LqlsJ.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/0iJ7jjMRopyI6Jbe9LqlsJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. 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/4se8UyevSdVp9asEAsYab1.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/4se8UyevSdVp9asEAsYab1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. 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/0XrhEYaQwkOrV9q4WILNlm.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/0XrhEYaQwkOrV9q4WILNlm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80249647b498bba2c993c2308c2290d78efcdb4445222065822a8f79d9e45a4. 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/4qY9CGxMqtQLngJRdQ1Q3m.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/4qY9CGxMqtQLngJRdQ1Q3m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5cmxI5EAJE5UNTeJAzMcxf.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/5cmxI5EAJE5UNTeJAzMcxf.