S7 or S-7 may refer to: Electronics and software Acer Aspire S7, a laptop Samsung Galaxy S7, a smartphone Samsung Galaxy Tab S7, a tablet computer , an automation system based on Programmable Lo
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 0x612292ed09bbe0e85ef717a7617043fe97c98ccad2827f0891f1a89b3b7f9b53. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e466ff46-6eaf-4d32-a464-a37d01f23eed.json and https://artists.proofprofile.net/proofs/artist/e466ff46-6eaf-4d32-a464-a37d01f23eed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).