Pop City
type: MusicGroup
description: Pop City was a weekly online magazine whose content focused on news and features about Pittsburgh, Pennsylvania. The content focused on talent, innovation, diversity, and environment. The magazine wa
popularity: 3
followers: 96
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x287bf57e115a8985096a34b6ec37de6736ac6eee14a00e98d03f9ab842d47c30
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a5b7bd8-3510-4ea2-ba47-7f5e004155a1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a5b7bd8-3510-4ea2-ba47-7f5e004155a1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a5b7bd8-3510-4ea2-ba47-7f5e004155a1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x287bf57e115a8985096a34b6ec37de6736ac6eee14a00e98d03f9ab842d47c30","name":"Pop City","registered_at":"2026-06-15T22:43:00Z","symbol":"NIM0854975","token_address":"0xdfcde3946748629651fc4b7f94511719f08f475f","type":"artist","uuid":"1a5b7bd8-3510-4ea2-ba47-7f5e004155a1"}
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 0x287bf57e115a8985096a34b6ec37de6736ac6eee14a00e98d03f9ab842d47c30. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a5b7bd8-3510-4ea2-ba47-7f5e004155a1.json and https://artists.proofprofile.net/proofs/artist/1a5b7bd8-3510-4ea2-ba47-7f5e004155a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x287bf57e115a8985096a34b6ec37de6736ac6eee14a00e98d03f9ab842d47c30","name":"Pop City","registered_at":"2026-06-15T22:43:00Z","symbol":"NIM0854975","token_address":"0xdfcde3946748629651fc4b7f94511719f08f475f","type":"artist","uuid":"1a5b7bd8-3510-4ea2-ba47-7f5e004155a1"}
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