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 0xdf0d0fd2474ad705c63c634c33300f24999929f851f02129ebf7e629167e17c0. 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/44ed90f0-6333-42ea-a9c6-3bab3009beaf.json and https://artists.proofprofile.net/proofs/artist/44ed90f0-6333-42ea-a9c6-3bab3009beaf.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 0x9277018605cb9f89e232100b5811ddd5b8005083da9745cc6142cc7cdf71fad3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3IdWkLKnlbO6uNTpcccWJc.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/3IdWkLKnlbO6uNTpcccWJc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591813f7abab779000824a2fa7eaaebf041ab79e3f830a53e0197702dbe5745f. 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/52MqDYZFN545jB6eHxQrih.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/52MqDYZFN545jB6eHxQrih.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49860e1815a51cb2227ba7de6ca638035caf45845e5749fb8b9dfa3e6d01d8bd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7lH6XktBnIPlT736c7LRpe.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/7lH6XktBnIPlT736c7LRpe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee5f33564f0428f5323b79c76600148f1a9d8e6325face2322ae1eda6f6cdda. 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/4HFoPeM8tTD4WgsShxmnyC.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/4HFoPeM8tTD4WgsShxmnyC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02f1a5a24070d518475b32e901c11ee1beeeaf89cbf70aba9016b87d3623e1. 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/5vFs4SKHE1Mn67uMilnEEU.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/5vFs4SKHE1Mn67uMilnEEU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc14442d01d350109a0d3fc94314404f61c86348c6c8701fed6948a6d2f791. 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/2iu2Ao1OkvmYxveYKjv1BG.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/2iu2Ao1OkvmYxveYKjv1BG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0a8358b7261af3e61392021b46a97e125180004a6b81e8c3a3b4a9209e8bd. 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/7J7mUwcLxHzgxCAznYkd9i.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/7J7mUwcLxHzgxCAznYkd9i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfe11412e51f2394959da1798c2572e8507602ea6b41b3b427069439623f6e9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5k3kvXv2YBzLXNEfWdqEuI.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/5k3kvXv2YBzLXNEfWdqEuI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cebd8f77df60e2f51ccfa5e70c309ff3bac9e74765b1b5592512213ce2c803. 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/44vGSyP656vd60sitV9Mza.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/44vGSyP656vd60sitV9Mza.