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 0x19ceffb10c8201e204c27effe5625bebd0e1507a840e67cbb986443eac293d5e. 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/854f5131-2bc2-4912-b77e-a9322927a39b.json and https://artists.proofprofile.net/proofs/artist/854f5131-2bc2-4912-b77e-a9322927a39b.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 0x5605965676f791da83f737c049f9a9f02932da56ec439177d43769645c10bd28. 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/3K9zv9aujz49EzEXHx9cZW.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/3K9zv9aujz49EzEXHx9cZW.
{"copyright_id":"0x0fa3a77cb6ee8587ca77101c77cdee2cdf0b6e7f7c403f1c1d65d65c6e1463e3","isrc":"TCABL1204638","name":"Extra Extra (feat. Puka Kozmetika)","registered_at":"2026-06-29T05:15:00Z","spotify_id":"4avYpiCqg4ULYckQwfQipr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa3a77cb6ee8587ca77101c77cdee2cdf0b6e7f7c403f1c1d65d65c6e1463e3. 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/4avYpiCqg4ULYckQwfQipr.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/4avYpiCqg4ULYckQwfQipr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e43b510e8aa84966e5b29994abd5912946b326a67bb255f3e7fbfb87f2c0617. 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/5AoZSrICpcQJRcdaDZ5RWt.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/5AoZSrICpcQJRcdaDZ5RWt.