Sona Family is a London-based musical quartet. They have been said to sound "like The Black Eyed Peas infused with traditional Indian bhangra music". They combine urban music, hip hop, R&B and danceha
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 0x652a124720b943db87add20e2a899e00f5545cc3f94f0be83582166ee4367883. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ae7d51f-1225-4dd6-8bd2-e6f7486b9c9c.json and https://artists.proofprofile.net/proofs/artist/0ae7d51f-1225-4dd6-8bd2-e6f7486b9c9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).