Filtro 27
type: MusicGroup
popularity: 10
followers: 108
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9d084031a15c5b73d1c69dbe5751fe72781101571421945b2b190c1e5147db1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0a494a0-1958-4364-a784-bf9af594d4d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0a494a0-1958-4364-a784-bf9af594d4d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e0a494a0-1958-4364-a784-bf9af594d4d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb9d084031a15c5b73d1c69dbe5751fe72781101571421945b2b190c1e5147db1","name":"Filtro 27","registered_at":"2026-06-21T06:17:57Z","symbol":"NIM1846038","token_address":"0x7e94d4a5941718135de67c4e83684dbc1d64fe39","type":"artist","uuid":"e0a494a0-1958-4364-a784-bf9af594d4d0"}
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 0xb9d084031a15c5b73d1c69dbe5751fe72781101571421945b2b190c1e5147db1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0a494a0-1958-4364-a784-bf9af594d4d0.json and https://artists.proofprofile.net/proofs/artist/e0a494a0-1958-4364-a784-bf9af594d4d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xb9d084031a15c5b73d1c69dbe5751fe72781101571421945b2b190c1e5147db1","name":"Filtro 27","registered_at":"2026-06-21T06:17:57Z","symbol":"NIM1846038","token_address":"0x7e94d4a5941718135de67c4e83684dbc1d64fe39","type":"artist","uuid":"e0a494a0-1958-4364-a784-bf9af594d4d0"}
album: Bien Temprano
  type: MusicAlbum
  date published: 2020-10-27