UNDERGROUND ARCHIVE
type: MusicGroup
popularity: 9
followers: 95
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc30c95ca7d793d62144c7a351e38f285387e6a01889435246559fc24e20967a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc30c95ca7d793d62144c7a351e38f285387e6a01889435246559fc24e20967a9","name":"UNDERGROUND ARCHIVE","registered_at":"2026-06-18T13:56:49Z","symbol":"NIM1499510","token_address":"0x5261520f62297e40b8b976e704f32457d8e7be88","type":"artist","uuid":"9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592"}
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 0xc30c95ca7d793d62144c7a351e38f285387e6a01889435246559fc24e20967a9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592.json and https://artists.proofprofile.net/proofs/artist/9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xc30c95ca7d793d62144c7a351e38f285387e6a01889435246559fc24e20967a9","name":"UNDERGROUND ARCHIVE","registered_at":"2026-06-18T13:56:49Z","symbol":"NIM1499510","token_address":"0x5261520f62297e40b8b976e704f32457d8e7be88","type":"artist","uuid":"9ae7c47f-76ff-41b8-9a5c-ba9fd67f8592"}
album: Late night
  type: MusicAlbum
  date published: 2022-07-15