Callum Mintzis
type: MusicGroup
genre: neoclassical
popularity: 2
followers: 420
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x124b44317225275b75ed86c07c77b85d6f9a5ee47fdffdc9ae49fed7fe813bc1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/29517fa5-543f-4ce0-b27a-ca3f2f5e4391.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/29517fa5-543f-4ce0-b27a-ca3f2f5e4391.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/29517fa5-543f-4ce0-b27a-ca3f2f5e4391
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x124b44317225275b75ed86c07c77b85d6f9a5ee47fdffdc9ae49fed7fe813bc1","name":"Callum Mintzis","registered_at":"2026-06-16T03:55:44Z","symbol":"NIM0929669","token_address":"0x7cf3b5868f7951aa808bfef1ab256f40e6365373","type":"artist","uuid":"29517fa5-543f-4ce0-b27a-ca3f2f5e4391"}
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 0x124b44317225275b75ed86c07c77b85d6f9a5ee47fdffdc9ae49fed7fe813bc1. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29517fa5-543f-4ce0-b27a-ca3f2f5e4391.json and https://artists.proofprofile.net/proofs/artist/29517fa5-543f-4ce0-b27a-ca3f2f5e4391.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0x124b44317225275b75ed86c07c77b85d6f9a5ee47fdffdc9ae49fed7fe813bc1","name":"Callum Mintzis","registered_at":"2026-06-16T03:55:44Z","symbol":"NIM0929669","token_address":"0x7cf3b5868f7951aa808bfef1ab256f40e6365373","type":"artist","uuid":"29517fa5-543f-4ce0-b27a-ca3f2f5e4391"}
album: That Place, Our Place
  type: MusicAlbum
  date published: 2020-06-28
album: And the Wind was my Dear Friend, Once Again
  type: MusicAlbum
  date published: 2024-03-01
album: Trembling
  type: MusicAlbum
  date published: 2024-03-22
album: While We Still Have Time (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 2025-06-07