David Américo Ortiz Arias (born November 18, 1975), nicknamed "Big Papi", is a Dominican-American former professional baseball designated hitter who played 20 seasons in Major League Baseball (MLB) fr
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 0xfbceca9a3c2d38f86e7875e9d3dbccf1b5c427c7e40d61b3e2b50f437925b963. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/048fcc0d-ed72-4f38-be55-b1d0c8839c57.json and https://artists.proofprofile.net/proofs/artist/048fcc0d-ed72-4f38-be55-b1d0c8839c57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).