Martin Eberle (20 December 1930 – 15 September 1992) was a German weightlifter. He competed in the men's featherweight event at the 1964 Summer Olympics. References External links Category:1930 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 0xf89e19ac0c73193f953279235b3a0e4a10d66ae25890406796ddf43dc8def980. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d1cf5ea-61de-443b-a5d8-57dc0d336d61.json and https://artists.proofprofile.net/proofs/artist/3d1cf5ea-61de-443b-a5d8-57dc0d336d61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).