"Barbie World" is a song by rappers Nicki Minaj and Ice Spice from Barbie the Album, the soundtrack of the film Barbie (2023). It was released by Atlantic Records, 10K Projects, and Capitol Records as
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 0x490eccecb8a5af30949f43b3f48c071cd83d316d314d7a5b16f6feff9e29bd7e. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19aba7c5-0f1b-4fd6-9147-16097d68b3d8.json and https://artists.proofprofile.net/proofs/artist/19aba7c5-0f1b-4fd6-9147-16097d68b3d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).