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 0x2904dac287adc19e814e8e4c1141d96bea49efe0c5fbdbb6bdfc834ea3b7c1d7. 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/4b22fa96-4781-4d73-848e-4730b51d9b01.json and https://artists.proofprofile.net/proofs/artist/4b22fa96-4781-4d73-848e-4730b51d9b01.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 0xb362227939212f6718ec2f31bc9ef809430aba0b347b1176e368c4b38196277c. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5mLz1Tbxtz9FnVbA4tIZ1s.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/5mLz1Tbxtz9FnVbA4tIZ1s.
{"copyright_id":"0xca1485a56bd67165904f5a095c07fa4e176f32ecafad716ed8c19dd97e927fe2","isrc":"QZHN32417208","name":"3 am haggstrom","registered_at":"2026-06-10T23:52:51Z","spotify_id":"5qddOgh6KPXvdg3VxWFrwT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1485a56bd67165904f5a095c07fa4e176f32ecafad716ed8c19dd97e927fe2. 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/5qddOgh6KPXvdg3VxWFrwT.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/5qddOgh6KPXvdg3VxWFrwT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6aecf1eca06c315c4c3613ae6aed4ec372e62aff8400e315f0772f24f64b03. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Eg01cOqMoUFNlXrAWZ5Ll.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/7Eg01cOqMoUFNlXrAWZ5Ll.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b0abd9026188392705e65a5e0f7c4ea58194d130e576b91da98453add679c. 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/5N9opkVv1WJoV8Gn9FvQa8.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/5N9opkVv1WJoV8Gn9FvQa8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6aecf1eca06c315c4c3613ae6aed4ec372e62aff8400e315f0772f24f64b03. 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/5WM9GQmxfhE6GeVWwYw1s8.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/5WM9GQmxfhE6GeVWwYw1s8.