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 0x842d67001b7c706dbb9ae3a555eda1180e870df00988b34b64abbe60328716ea. 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/8f5ef6ac-b6bd-4a41-a011-5354a336bcbb.json and https://artists.proofprofile.net/proofs/artist/8f5ef6ac-b6bd-4a41-a011-5354a336bcbb.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 0xfe60c1097ce5228e03617ca7ca556d6fbd06e4a2b486b7e2f4c6982b690840c7. 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/4wOyrbNG5eEv5ZF5oVqHtX.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/4wOyrbNG5eEv5ZF5oVqHtX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c546d091afc215b23f983c8f4420ed1b4f8700c9550f01f970b7fc6a57b59bf. 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/2ei6dJW5K61okJQWo81WEl.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/2ei6dJW5K61okJQWo81WEl.
{"copyright_id":"0x8c546d091afc215b23f983c8f4420ed1b4f8700c9550f01f970b7fc6a57b59bf","isrc":"QMCE32100002","name":"No Chill (feat. Lil Xxel)","registered_at":"2026-06-05T06:41:48Z","spotify_id":"5oh6lXsQ3mhw5PvcsJqvXg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c546d091afc215b23f983c8f4420ed1b4f8700c9550f01f970b7fc6a57b59bf. 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/5oh6lXsQ3mhw5PvcsJqvXg.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/5oh6lXsQ3mhw5PvcsJqvXg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32c100beb40617ade6f5275daec5883e80bcd60681368e63d28695f60ce734a. 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/3VFObo4lNLb29LD8y4jDZJ.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/3VFObo4lNLb29LD8y4jDZJ.