PTAF (acronym of Pretty and Taking All Fades) is an American hip hop crunk girl group from Los Angeles consisting of Kandi, K'Duce, and Alizé. They are most known for their viral song "Boss Ass Bitch"
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 0x3e6e705dac55f3f0f902867f301b49491c243bff10c30cbaa105dd6e9b7e8480. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04439ce4-55a9-4136-a64f-d28dab61d6cb.json and https://artists.proofprofile.net/proofs/artist/04439ce4-55a9-4136-a64f-d28dab61d6cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).