Humberto "Tito" Nieves (born June 4, 1958; also known as "El Pavarotti de la Salsa") is a Puerto Rican musician who became one of the leading salsa singers of the 1980s and the early 1990s. Early lif
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 0xb21fdebdbead4a7260cc3f916c05acd8211935478be4224892a6c51de5519a49. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7121a4cc-fd77-459a-88f6-1f8b7b6fdec2.json and https://artists.proofprofile.net/proofs/artist/7121a4cc-fd77-459a-88f6-1f8b7b6fdec2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).