Mango Groove is an 11-piece South African Afropop band whose music fuses pop and township music—especially marabi and kwela. Since their foundation in 1984, the band has released six studio albums an
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 0x4a03ef9864cb66c567eb337786b11ef2b1d47155c95af1d064d65c7991cae238. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f09dc131-31a5-43e1-a6b9-432e6defd723.json and https://artists.proofprofile.net/proofs/artist/f09dc131-31a5-43e1-a6b9-432e6defd723.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).