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 0x653bb602ebe856571fab3a199e384e5e513f66b466069e81bd33be5105f2cc4a. 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/8f2d2e80-85a3-4267-8e4c-a86a7088bf94.json and https://artists.proofprofile.net/proofs/artist/8f2d2e80-85a3-4267-8e4c-a86a7088bf94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb9759319ef63f1242fdc86aae952d1422c549d27d0784ccb8e9bd66f77fd0f8d","isrc":"FR10S1812683","name":"Рядом с ней","registered_at":"2026-06-28T20:14:44Z","spotify_id":"4VLiWEnrwjtAyMPpHW7bmz","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 0xb9759319ef63f1242fdc86aae952d1422c549d27d0784ccb8e9bd66f77fd0f8d. 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/4VLiWEnrwjtAyMPpHW7bmz.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/4VLiWEnrwjtAyMPpHW7bmz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171706e571fea0b82e49bbd8e71851924e67a73dc4ced71cf3549100a05d0053. 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/70ifj58KPoF3T63AWS5UFW.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/70ifj58KPoF3T63AWS5UFW.