Leo Ost
type: MusicGroup
popularity: 12
followers: 211
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xac3e781a628550f0e6267c404b66f4874ad2287cf292de83d93ad1025fc42dfb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953626
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953626
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/228e1494-568b-482f-b37a-d41b02ac56e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/228e1494-568b-482f-b37a-d41b02ac56e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/228e1494-568b-482f-b37a-d41b02ac56e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:41:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xac3e781a628550f0e6267c404b66f4874ad2287cf292de83d93ad1025fc42dfb","name":"Leo Ost","registered_at":"2026-06-14T08:07:02Z","symbol":"NIM0390675","token_address":"0xe97039fe74fec1d6349ecf435d121a2a4828ead3","type":"artist","uuid":"228e1494-568b-482f-b37a-d41b02ac56e9"}
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 0xac3e781a628550f0e6267c404b66f4874ad2287cf292de83d93ad1025fc42dfb. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/228e1494-568b-482f-b37a-d41b02ac56e9.json and https://artists.proofprofile.net/proofs/artist/228e1494-568b-482f-b37a-d41b02ac56e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0xac3e781a628550f0e6267c404b66f4874ad2287cf292de83d93ad1025fc42dfb","name":"Leo Ost","registered_at":"2026-06-14T08:07:02Z","symbol":"NIM0390675","token_address":"0xe97039fe74fec1d6349ecf435d121a2a4828ead3","type":"artist","uuid":"228e1494-568b-482f-b37a-d41b02ac56e9"}
album: Pétalas
  type: MusicAlbum
  date published: 2023-09-26