Giovanni Battista Costanzi
type: MusicGroup
description: Giovanni Battista Costanzi (1704-1778) was an Italian composer and cellist. He succeeded Stefano Fabri as maestro di cappella of the Cappella Giulia at St. Peter's Basilica in Rome. Also known as a te
popularity: 3
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc15eccf11bc5ddd674c379a1946af5639a173a42e4b14aabb33dd991050c9ab9
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/6c0ebb7c-68a2-4468-9b7e-dca6d4abab59.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c0ebb7c-68a2-4468-9b7e-dca6d4abab59.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6c0ebb7c-68a2-4468-9b7e-dca6d4abab59
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc15eccf11bc5ddd674c379a1946af5639a173a42e4b14aabb33dd991050c9ab9","name":"Giovanni Battista Costanzi","registered_at":"2026-06-17T03:16:00Z","symbol":"NIM1263828","token_address":"0x71647c73eb76646f1d17c8f278a6ab0f1c40402f","type":"artist","uuid":"6c0ebb7c-68a2-4468-9b7e-dca6d4abab59"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15eccf11bc5ddd674c379a1946af5639a173a42e4b14aabb33dd991050c9ab9. 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/6c0ebb7c-68a2-4468-9b7e-dca6d4abab59.json and https://artists.proofprofile.net/proofs/artist/6c0ebb7c-68a2-4468-9b7e-dca6d4abab59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc15eccf11bc5ddd674c379a1946af5639a173a42e4b14aabb33dd991050c9ab9","name":"Giovanni Battista Costanzi","registered_at":"2026-06-17T03:16:00Z","symbol":"NIM1263828","token_address":"0x71647c73eb76646f1d17c8f278a6ab0f1c40402f","type":"artist","uuid":"6c0ebb7c-68a2-4468-9b7e-dca6d4abab59"}
album: Constanzi: Cantata per Natale
  type: MusicAlbum
  date published: 2019-01-18