Porter Brook
type: MusicGroup
genre: breakbeat
genre: uk funky
description: The Porter Brook is a river which flows through the City of Sheffield, England, descending over from its source on Burbage Moor to the west of the city to its mouth where it joins the River Sheaf in
popularity: 2
followers: 665
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc470b2718d4ca996f3088ad896ab77823bde01b8ca34f8c58a801b545d5c8685
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1281705b-1b52-411e-8a38-b1c846646fb6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1281705b-1b52-411e-8a38-b1c846646fb6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1281705b-1b52-411e-8a38-b1c846646fb6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc470b2718d4ca996f3088ad896ab77823bde01b8ca34f8c58a801b545d5c8685","name":"Porter Brook","registered_at":"2026-06-15T20:02:55Z","symbol":"NIM0816806","token_address":"0xa0a8e9438eb1f6faa8541e28d39b6d18625637c6","type":"artist","uuid":"1281705b-1b52-411e-8a38-b1c846646fb6"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc470b2718d4ca996f3088ad896ab77823bde01b8ca34f8c58a801b545d5c8685. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1281705b-1b52-411e-8a38-b1c846646fb6.json and https://artists.proofprofile.net/proofs/artist/1281705b-1b52-411e-8a38-b1c846646fb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0xc470b2718d4ca996f3088ad896ab77823bde01b8ca34f8c58a801b545d5c8685","name":"Porter Brook","registered_at":"2026-06-15T20:02:55Z","symbol":"NIM0816806","token_address":"0xa0a8e9438eb1f6faa8541e28d39b6d18625637c6","type":"artist","uuid":"1281705b-1b52-411e-8a38-b1c846646fb6"}
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