Ursula M. Burns (born September 20, 1958) is an American businesswoman. Burns was the CEO of Xerox from 2009 to 2016. Burns was the first black woman to lead a Fortune 500 company. She is also the fir
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec550bb6af53709d51e1163cbc8093dcebe4b1fad1552d3bfade8000864e0c. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2523b2e1-f80b-4451-9a41-2c72d25aa6b7.json and https://artists.proofprofile.net/proofs/artist/2523b2e1-f80b-4451-9a41-2c72d25aa6b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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