Gamper is a surname. Notable people with the surname include: David Gamper (1945–2011), American composer Joan Gamper (1877–1930), Swiss football pioneer, player, and club president John Gamper (
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 0x12e86c4a3230cc705312949d9495fa2381cc8366dd769342cf9b9ba9873910c2. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11d196b7-233b-48a6-9c09-a3c9263d82e6.json and https://artists.proofprofile.net/proofs/artist/11d196b7-233b-48a6-9c09-a3c9263d82e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).