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 0x4d8ae6b0ec847b41dc88a909b3e8d5ae89bdaab5ca7201df6aa6ef7b153ff30b. 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/694fc61c-49d7-49e2-bc5e-cfcb55212613.json and https://artists.proofprofile.net/proofs/artist/694fc61c-49d7-49e2-bc5e-cfcb55212613.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x5625a1c7d895057f9d9ceffe153e2c019f4cfebfa2e80d43c98eebc385d36289","isrc":"CZA231800226","name":"Hledáme sebe","registered_at":"2026-06-28T19:47:35Z","spotify_id":"52xltJjkK0HQG0lvaWduqk","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 0x5625a1c7d895057f9d9ceffe153e2c019f4cfebfa2e80d43c98eebc385d36289. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/52xltJjkK0HQG0lvaWduqk.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/52xltJjkK0HQG0lvaWduqk.
{"copyright_id":"0x81020f53bfeffcf06498e22d3d02dbfcbcf2cf9d4134b1d6069aac90ee5971fd","isrc":"SKA011100115","name":"Klid Mír a Pokora","registered_at":"2026-06-22T05:15:58Z","spotify_id":"6mWm99TyDAfFzOrVRCHzkg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81020f53bfeffcf06498e22d3d02dbfcbcf2cf9d4134b1d6069aac90ee5971fd. 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/6mWm99TyDAfFzOrVRCHzkg.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/6mWm99TyDAfFzOrVRCHzkg.