John Leb
type: MusicGroup
popularity: 3
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5248c69798a10e52f7fee3fe7b7af47192f240d88ad212e2765e10939d27962
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d81a2f8-9763-4f15-932d-ae0a64cd9662.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d81a2f8-9763-4f15-932d-ae0a64cd9662.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9d81a2f8-9763-4f15-932d-ae0a64cd9662
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf5248c69798a10e52f7fee3fe7b7af47192f240d88ad212e2765e10939d27962","name":"John Leb","registered_at":"2026-06-20T04:34:30Z","symbol":"NIM1513446","token_address":"0x2413a4073cc25d7297d942a147b75b7a09a6ddc9","type":"artist","uuid":"9d81a2f8-9763-4f15-932d-ae0a64cd9662"}
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 0xf5248c69798a10e52f7fee3fe7b7af47192f240d88ad212e2765e10939d27962. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d81a2f8-9763-4f15-932d-ae0a64cd9662.json and https://artists.proofprofile.net/proofs/artist/9d81a2f8-9763-4f15-932d-ae0a64cd9662.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0xf5248c69798a10e52f7fee3fe7b7af47192f240d88ad212e2765e10939d27962","name":"John Leb","registered_at":"2026-06-20T04:34:30Z","symbol":"NIM1513446","token_address":"0x2413a4073cc25d7297d942a147b75b7a09a6ddc9","type":"artist","uuid":"9d81a2f8-9763-4f15-932d-ae0a64cd9662"}