Lost Years may refer to: Lost Years (film), a 1911 silent film dramatic short Lost Years: A People's Struggle for Justice, a 2011 documentary film The Lost Years (Gli anni perduti), a 1944 novel b
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 0x9ffed336b0ba876770b91657ab9d97c2001c0fc318863f7e4f017a9e0fb69156. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/714c2934-2c77-4d2e-9bb8-167e84426b3a.json and https://artists.proofprofile.net/proofs/artist/714c2934-2c77-4d2e-9bb8-167e84426b3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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