Vem Leo
type: MusicGroup
genre: opm
popularity: 2
followers: 381
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ea7bffa420011eb005e67dad6870938030487d0937db928f9f9ecf0e9f2cf69
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f83042cb-f23d-4c1b-99d5-33a69f2d8e63.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f83042cb-f23d-4c1b-99d5-33a69f2d8e63.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f83042cb-f23d-4c1b-99d5-33a69f2d8e63
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ea7bffa420011eb005e67dad6870938030487d0937db928f9f9ecf0e9f2cf69","name":"Vem Leo","registered_at":"2026-06-21T16:13:14Z","symbol":"NIM1966263","token_address":"0xe4501d43dea05349b621e06c770fc07e12f9fcc8","type":"artist","uuid":"f83042cb-f23d-4c1b-99d5-33a69f2d8e63"}
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 0x6ea7bffa420011eb005e67dad6870938030487d0937db928f9f9ecf0e9f2cf69. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f83042cb-f23d-4c1b-99d5-33a69f2d8e63.json and https://artists.proofprofile.net/proofs/artist/f83042cb-f23d-4c1b-99d5-33a69f2d8e63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x6ea7bffa420011eb005e67dad6870938030487d0937db928f9f9ecf0e9f2cf69","name":"Vem Leo","registered_at":"2026-06-21T16:13:14Z","symbol":"NIM1966263","token_address":"0xe4501d43dea05349b621e06c770fc07e12f9fcc8","type":"artist","uuid":"f83042cb-f23d-4c1b-99d5-33a69f2d8e63"}
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  type: MusicAlbum
  date published: 2023-05-04
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  type: MusicAlbum
  date published: 2023-08-22
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  type: MusicAlbum
  date published: 2024-08-04
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  type: MusicAlbum
  date published: 2025-05-25
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  type: MusicAlbum
  date published: 2025-05-25