Grupo Expresso
type: MusicGroup
genre: argentine rock
popularity: 10
followers: 523
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fd77657783c7fb069097f437f782bce4b6b807f9d4bd72a57bf3ae195bd2d9b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bd767a8e-45d3-4e28-b319-d8a4510d2cb1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bd767a8e-45d3-4e28-b319-d8a4510d2cb1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bd767a8e-45d3-4e28-b319-d8a4510d2cb1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2fd77657783c7fb069097f437f782bce4b6b807f9d4bd72a57bf3ae195bd2d9b","name":"Grupo Expresso","registered_at":"2026-06-20T17:50:48Z","symbol":"NIM1672849","token_address":"0x5a0e8379087195cd12fd0cd3d68f3ccf803188c1","type":"artist","uuid":"bd767a8e-45d3-4e28-b319-d8a4510d2cb1"}
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 0x2fd77657783c7fb069097f437f782bce4b6b807f9d4bd72a57bf3ae195bd2d9b. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd767a8e-45d3-4e28-b319-d8a4510d2cb1.json and https://artists.proofprofile.net/proofs/artist/bd767a8e-45d3-4e28-b319-d8a4510d2cb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
  text: {"copyright_id":"0x2fd77657783c7fb069097f437f782bce4b6b807f9d4bd72a57bf3ae195bd2d9b","name":"Grupo Expresso","registered_at":"2026-06-20T17:50:48Z","symbol":"NIM1672849","token_address":"0x5a0e8379087195cd12fd0cd3d68f3ccf803188c1","type":"artist","uuid":"bd767a8e-45d3-4e28-b319-d8a4510d2cb1"}
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  type: MusicAlbum
  date published: 2000-07-03
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  type: MusicAlbum
  date published: 2016-04-25
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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