Charlie Chan is a fictional Honolulu police detective created by author Earl Derr Biggers for a series of mystery novels. Biggers loosely based Chan on Hawaiian detective Chang Apana. The benevolent a
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xabc06d01ab03ebfd58d63663b320e3763ebe9ffb3cf6ca4d4bf26fc5d38eceda. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0819ef7-c41a-43be-9617-5e4f73e5d105.json and https://artists.proofprofile.net/proofs/artist/b0819ef7-c41a-43be-9617-5e4f73e5d105.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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