Segundo is a Portuguese and Spanish word meaning "second" and may refer to: Music Segundo (Juana Molina album), 2000 Segundo (Cooder Graw album), 2001 Places Segundo, Colorado, an unincorporated com
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 0x062e8c05d78c89369c6e48c44a559eeb478ff7748acd23546cf1ae43d9d9b9c5. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d5e58eb-af87-40cc-b4d7-0bf211c4d214.json and https://artists.proofprofile.net/proofs/artist/7d5e58eb-af87-40cc-b4d7-0bf211c4d214.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).