Second Wind may refer to: Second wind, an exercise phenomenon Second wind (sleep), a sleep phenomenon Film Second Wind (1966 film) or Le deuxième souffle, a French film directed by Jean-Pierre Me
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 0xbef21bfbb5616b43180c2aa28032d37cf19c390c2546a8cce6d9182f8c8780a1. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a6ced0e-a70c-4b35-9054-05ca1a74042a.json and https://artists.proofprofile.net/proofs/artist/7a6ced0e-a70c-4b35-9054-05ca1a74042a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).