"Party Girls" is a song by American hip hop recording artist Ludacris, featuring vocals from singer Jeremih and rapper Wiz Khalifa, produced by Cashmere Cat. It contains an interpolation of 1997 hit s
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 0xc42734dbdf21af6df819b72e5a818b1f2d735c76e888b0bbfb890f7e8e7010ec. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b43c4090-8003-481b-9c85-14add1a30ca6.json and https://artists.proofprofile.net/proofs/artist/b43c4090-8003-481b-9c85-14add1a30ca6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Girl's Party Night, Vol. 3 (Special Edition)
Girl's Party Night, Vol. 1 (Special Edition)
Girl's Party Night, Vol. 2 (Special Edition)
Music for Party Girls, Vol. 10 (Special Edition)
Girl's Party Night, Vol. 1 (Instrumental)
Girl's Party Night, Vol. 2 (Instrumental)
Girl's Party Night, Vol. 3 (Instrumental)