Leander is one of the protagonists in the story of Hero and Leander in Greek mythology. Leander may also refer to: People Leander (given name) Leander (surname) Places Leander, Kentucky, United
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 0x760294d1f32267f62131a5aa24158600eb3ac51792bac29e5a3ce3659eda880f. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c0206f-867c-4b00-acd6-d4ec2e894069.json and https://artists.proofprofile.net/proofs/artist/00c0206f-867c-4b00-acd6-d4ec2e894069.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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