Rafael Calegari
type: MusicGroup
genre: brazilian jazz
popularity: 6
followers: 181
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb720c3d3f6e1430bf3635ebe4ef7c4bfb73e704a33103923ef5dd8799eebdc2
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/616e786c-fe7e-4471-95b1-4ccd769e202a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/616e786c-fe7e-4471-95b1-4ccd769e202a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/616e786c-fe7e-4471-95b1-4ccd769e202a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb720c3d3f6e1430bf3635ebe4ef7c4bfb73e704a33103923ef5dd8799eebdc2","name":"Rafael Calegari","registered_at":"2026-06-16T23:38:30Z","symbol":"NIM1211927","token_address":"0xe18dafc96ba7f9757fab850a7ebf8a69137f52cc","type":"artist","uuid":"616e786c-fe7e-4471-95b1-4ccd769e202a"}
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 0xcb720c3d3f6e1430bf3635ebe4ef7c4bfb73e704a33103923ef5dd8799eebdc2. 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/616e786c-fe7e-4471-95b1-4ccd769e202a.json and https://artists.proofprofile.net/proofs/artist/616e786c-fe7e-4471-95b1-4ccd769e202a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xcb720c3d3f6e1430bf3635ebe4ef7c4bfb73e704a33103923ef5dd8799eebdc2","name":"Rafael Calegari","registered_at":"2026-06-16T23:38:30Z","symbol":"NIM1211927","token_address":"0xe18dafc96ba7f9757fab850a7ebf8a69137f52cc","type":"artist","uuid":"616e786c-fe7e-4471-95b1-4ccd769e202a"}
album: Rivo Trio Samba Jazz
  type: MusicAlbum
  date published: 2015-04-03
album: Rivo Trio Samba Jazz
  type: MusicAlbum
  date published: 2017-02-13
album: 40 VOLTAS
  type: MusicAlbum
  date published: 2020-10-29
album: BAIXO AO LADO
  type: MusicAlbum
  date published: 2021-05-07