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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd9cb65a563cc44edd4af018b2514c7560475ccceb3ec6d06a8bd32e7fcdb83. 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/9c0318bb-31af-42b7-96bb-e74570dce1c3.json and https://artists.proofprofile.net/proofs/artist/9c0318bb-31af-42b7-96bb-e74570dce1c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
爱在高山顶上（5月17日）——为“世界不再恐同日”
浩劫重生（12月1日）——为“新冠病毒疫情发生纪念日”