Livingston Lemorie Matthews, known professionally as Pink Siifu, and occasionally iiye, is an American rapper, singer and songwriter from Cincinnati, Ohio, and Birmingham, Alabama. Life and career Ma
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf16bf11b4016c3e6b7f80e98af5c07e495d6e7c15f3b735e6b03727b5b911ba. 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/65da17f2-e9a0-4cad-827a-e3172911f509.json and https://artists.proofprofile.net/proofs/artist/65da17f2-e9a0-4cad-827a-e3172911f509.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).