Cálamo
type: MusicGroup
genre: christian rock
popularity: 2
followers: 200
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb2d6873b2e968b12406cf56aacf2d34858f40f6df9c7c5435fccbef893026e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f3b407b-3835-4fb5-ac27-1e6d13a6d15a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f3b407b-3835-4fb5-ac27-1e6d13a6d15a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f3b407b-3835-4fb5-ac27-1e6d13a6d15a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdb2d6873b2e968b12406cf56aacf2d34858f40f6df9c7c5435fccbef893026e6","name":"Cálamo","registered_at":"2026-06-16T11:34:11Z","symbol":"NIM1039133","token_address":"0xfd53fe02bda914d3db5cd6c62a12f42d0d4a901f","type":"artist","uuid":"3f3b407b-3835-4fb5-ac27-1e6d13a6d15a"}
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 0xdb2d6873b2e968b12406cf56aacf2d34858f40f6df9c7c5435fccbef893026e6. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f3b407b-3835-4fb5-ac27-1e6d13a6d15a.json and https://artists.proofprofile.net/proofs/artist/3f3b407b-3835-4fb5-ac27-1e6d13a6d15a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0xdb2d6873b2e968b12406cf56aacf2d34858f40f6df9c7c5435fccbef893026e6","name":"Cálamo","registered_at":"2026-06-16T11:34:11Z","symbol":"NIM1039133","token_address":"0xfd53fe02bda914d3db5cd6c62a12f42d0d4a901f","type":"artist","uuid":"3f3b407b-3835-4fb5-ac27-1e6d13a6d15a"}
album: Viver
  type: MusicAlbum
  date published: 2000-01-01
album: O Que Parecia Ter Fim
  type: MusicAlbum
  date published: 2013-09-28
album: Cordeiro
  type: MusicAlbum
  date published: 2017-08-24