Café 612
type: MusicGroup
genre: singer-songwriter
popularity: 2
followers: 322
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90d24cd83f389094ce3ed0cb7e6994cb33afd5340a0f63619eb0a24c7b6037a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d0eddcbe-98a1-4ad1-8911-5240dfa9cf90.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d0eddcbe-98a1-4ad1-8911-5240dfa9cf90.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d0eddcbe-98a1-4ad1-8911-5240dfa9cf90
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90d24cd83f389094ce3ed0cb7e6994cb33afd5340a0f63619eb0a24c7b6037a9","name":"Café 612","registered_at":"2026-06-21T01:02:11Z","symbol":"NIM1769856","token_address":"0x066b697c8e18371962870f010c1725d4d0948ce6","type":"artist","uuid":"d0eddcbe-98a1-4ad1-8911-5240dfa9cf90"}
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 0x90d24cd83f389094ce3ed0cb7e6994cb33afd5340a0f63619eb0a24c7b6037a9. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0eddcbe-98a1-4ad1-8911-5240dfa9cf90.json and https://artists.proofprofile.net/proofs/artist/d0eddcbe-98a1-4ad1-8911-5240dfa9cf90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x90d24cd83f389094ce3ed0cb7e6994cb33afd5340a0f63619eb0a24c7b6037a9","name":"Café 612","registered_at":"2026-06-21T01:02:11Z","symbol":"NIM1769856","token_address":"0x066b697c8e18371962870f010c1725d4d0948ce6","type":"artist","uuid":"d0eddcbe-98a1-4ad1-8911-5240dfa9cf90"}
album: Café 612
  type: MusicAlbum
  date published: 2012
album: Café 612
  type: MusicAlbum
  date published: 2012
album: Von Katzen und Mäusen
  type: MusicAlbum
  date published: 2016-05-10
album: Wohin gehen wir jetzt?
  type: MusicAlbum
  date published: 2023-07-17