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 0xddbc56935a91b569fa348e0eb8bc4f0df7305fe8a35e6fd4a54212f6b86c885f. 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/15969171-c71e-4b94-9126-a41ddefb5c40.json and https://artists.proofprofile.net/proofs/artist/15969171-c71e-4b94-9126-a41ddefb5c40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x69afb59d3f28b7e25ac6e247db5eeb28103a769e4ac3a0e556c55c0cc5931fb8","isrc":"BRUM72202056","name":"Sem Necessidade","registered_at":"2026-06-11T10:26:43Z","spotify_id":"3QzAkwsDY420mcBIeZh2mC","type":"track"}
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 0x69afb59d3f28b7e25ac6e247db5eeb28103a769e4ac3a0e556c55c0cc5931fb8. 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/3QzAkwsDY420mcBIeZh2mC.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/3QzAkwsDY420mcBIeZh2mC.
{"copyright_id":"0x69afb59d3f28b7e25ac6e247db5eeb28103a769e4ac3a0e556c55c0cc5931fb8","isrc":"BRUM72202056","name":"Sem Necessidade","registered_at":"2026-06-11T10:26:43Z","spotify_id":"03hUX7AdGGE9zuvxFQtp4p","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69afb59d3f28b7e25ac6e247db5eeb28103a769e4ac3a0e556c55c0cc5931fb8. 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/03hUX7AdGGE9zuvxFQtp4p.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/03hUX7AdGGE9zuvxFQtp4p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c9179bc78a04d05fb7b86050edf807cf1fe2dbd6fe4022ec86e7371a682bba. 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/4pRo6jigKfCcmQcDCrfdtf.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/4pRo6jigKfCcmQcDCrfdtf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6997800c2ba5a7201e39f2ff6b312d13ed87e32ee5e118a59bf0731c6c1826. 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/4CAo1jqvairy3qYMJSVYzF.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/4CAo1jqvairy3qYMJSVYzF.