Eric Nils Nilsson (26 December 1926 – 13 June 2024) was a Swedish middle-distance runner. He competed in the men's 3000 metres steeplechase at the 1952 Summer Olympics. He died on 13 June 2024, at the
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 0x3fbcc045a26398769fb98ca434ed578742a3739334d49b3214a08531616d825f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0111648-9ebc-4207-85e6-97877c3bb620.json and https://artists.proofprofile.net/proofs/artist/b0111648-9ebc-4207-85e6-97877c3bb620.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).