Giovan Leonardo Primavera
type: MusicGroup
description: Giovan Leonardo Primavera (c. 1540–1585) was an Italian Renaissance composer and poet. Born in Barletta, he spent most of his working life in Naples, with some time in other Italian cities such as Ve
popularity: 2
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4dabadb3019d26b97a60c684da8ed6b234bc43c8f718e6e00e74eccdbd701b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/782821d5-3381-463d-b9e5-0383fbf63b70.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/782821d5-3381-463d-b9e5-0383fbf63b70.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/782821d5-3381-463d-b9e5-0383fbf63b70
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc4dabadb3019d26b97a60c684da8ed6b234bc43c8f718e6e00e74eccdbd701b0","name":"Giovan Leonardo Primavera","registered_at":"2026-06-17T07:33:13Z","symbol":"NIM1325212","token_address":"0x9d7f515a9cfa8c6968ff9072223c91fd944f14fa","type":"artist","uuid":"782821d5-3381-463d-b9e5-0383fbf63b70"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dabadb3019d26b97a60c684da8ed6b234bc43c8f718e6e00e74eccdbd701b0. 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/782821d5-3381-463d-b9e5-0383fbf63b70.json and https://artists.proofprofile.net/proofs/artist/782821d5-3381-463d-b9e5-0383fbf63b70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc4dabadb3019d26b97a60c684da8ed6b234bc43c8f718e6e00e74eccdbd701b0","name":"Giovan Leonardo Primavera","registered_at":"2026-06-17T07:33:13Z","symbol":"NIM1325212","token_address":"0x9d7f515a9cfa8c6968ff9072223c91fd944f14fa","type":"artist","uuid":"782821d5-3381-463d-b9e5-0383fbf63b70"}