The Underground
type: MusicGroup
description: REDIRECT Underground
popularity: 8
followers: 7499
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a08238a42e0eb7ecde47c3d7a53d33f1372e5378d183fceb6456eb0972f39dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/abf157e2-78cd-4466-a789-4060f091ae0a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/abf157e2-78cd-4466-a789-4060f091ae0a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/abf157e2-78cd-4466-a789-4060f091ae0a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7a08238a42e0eb7ecde47c3d7a53d33f1372e5378d183fceb6456eb0972f39dc","name":"The Underground","registered_at":"2026-06-20T09:57:45Z","symbol":"NIM1585357","token_address":"0x4898437899309c85ac36466cb92e116edbbf207a","type":"artist","uuid":"abf157e2-78cd-4466-a789-4060f091ae0a"}
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 0x7a08238a42e0eb7ecde47c3d7a53d33f1372e5378d183fceb6456eb0972f39dc. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abf157e2-78cd-4466-a789-4060f091ae0a.json and https://artists.proofprofile.net/proofs/artist/abf157e2-78cd-4466-a789-4060f091ae0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0x7a08238a42e0eb7ecde47c3d7a53d33f1372e5378d183fceb6456eb0972f39dc","name":"The Underground","registered_at":"2026-06-20T09:57:45Z","symbol":"NIM1585357","token_address":"0x4898437899309c85ac36466cb92e116edbbf207a","type":"artist","uuid":"abf157e2-78cd-4466-a789-4060f091ae0a"}
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