Sangue Misto was an Italian band, one of the first groups of Italian hip hop. It was formed in Bologna in the early 1990s. Its members included Neffa and Deda (rappers, producers), and DJ Gruff (rappe
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 0xce93393f32f5507e88cc176885e6f4a8e48248d7668a7f909581a79dd039152a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a421870c-6b9b-4cf8-903d-031cae3fa235.json and https://artists.proofprofile.net/proofs/artist/a421870c-6b9b-4cf8-903d-031cae3fa235.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).