Choirs of St. John Cantius
type: MusicGroup
genre: gregorian chant
popularity: 3
followers: 419
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5dadc6521f4e77b53b6ab56099c64bf2e035d4ac5243d5e12032d002d87d7a42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aae71b69-0034-45bd-965d-d82e7a8f8d8f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aae71b69-0034-45bd-965d-d82e7a8f8d8f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aae71b69-0034-45bd-965d-d82e7a8f8d8f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5dadc6521f4e77b53b6ab56099c64bf2e035d4ac5243d5e12032d002d87d7a42","name":"Choirs of St. John Cantius","registered_at":"2026-06-20T09:42:31Z","symbol":"NIM1581797","token_address":"0xe70c6f949df3b3c437a9b6efbe74e8f2b11ce80d","type":"artist","uuid":"aae71b69-0034-45bd-965d-d82e7a8f8d8f"}
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 0x5dadc6521f4e77b53b6ab56099c64bf2e035d4ac5243d5e12032d002d87d7a42. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aae71b69-0034-45bd-965d-d82e7a8f8d8f.json and https://artists.proofprofile.net/proofs/artist/aae71b69-0034-45bd-965d-d82e7a8f8d8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x5dadc6521f4e77b53b6ab56099c64bf2e035d4ac5243d5e12032d002d87d7a42","name":"Choirs of St. John Cantius","registered_at":"2026-06-20T09:42:31Z","symbol":"NIM1581797","token_address":"0xe70c6f949df3b3c437a9b6efbe74e8f2b11ce80d","type":"artist","uuid":"aae71b69-0034-45bd-965d-d82e7a8f8d8f"}
album: St. John Cantius Presents: The Traditional Rosary with Music and Devotions in Honor of Our Lady
  type: MusicAlbum
  date published: 2010
album: St. John Cantius Presents: O Holy Night
  type: MusicAlbum
  date published: 2011
album: St. John Cantius Presents: Carols by Candlelight
  type: MusicAlbum
  date published: 2013
album: St. John Cantius presents Regal Music: Mozart Coronation Mass with Christmas Carols, Motets & Gregorian Chant
  type: MusicAlbum
  date published: 2013
album: St. John Cantius Presents: Te Deum, Music of Midnight Mass
  type: MusicAlbum
  date published: 2015