"Whats Poppin" (stylized in all caps) is a song by American rapper Jack Harlow, released as the lead single from his EP Sweet Action, by Generation Now and Atlantic Records on January 21, 2020. It was
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 0x8b376e080528a2070601f0bf4183827648b1ef17c4dc76655e865a2829e23b0d. 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/6133e279-9c4d-4b3b-83aa-71a32c1b0a32.json and https://artists.proofprofile.net/proofs/artist/6133e279-9c4d-4b3b-83aa-71a32c1b0a32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).