Levi Jackson (August 22, 1926 – December 7, 2000) was an American college football player and business executive. He was the first African-American football captain at Yale, and the first African-Amer
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 0x13c4af281bf03bd6c562525e83287cd2324ac3ffcbd0262f33524cdb8c071602. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9f7a6c7-c799-44d5-af6b-df2b59db8fcc.json and https://artists.proofprofile.net/proofs/artist/f9f7a6c7-c799-44d5-af6b-df2b59db8fcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).