A musketeer ( ) was a type of soldier equipped with a musket. Musketeers were an important part of early modern warfare from the mid 15th to mid 19th centuries, particularly in Europe, where they nor
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 0x4c8839cdb6c0df03352090408133029c6c798eedbedb4c2a1a5dce1a366e975c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/974ee14a-59d0-4418-9c8a-fe788950d90a.json and https://artists.proofprofile.net/proofs/artist/974ee14a-59d0-4418-9c8a-fe788950d90a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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