The Haddonfields
type: MusicGroup
genre: pop punk
popularity: 2
followers: 814
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd41d0917ef385d559cc54124e0d4647abc416c9b96ef49b6489149bdcc4a7319
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a47e63d-71f7-40c5-b992-678e3cbf1ae6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a47e63d-71f7-40c5-b992-678e3cbf1ae6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a47e63d-71f7-40c5-b992-678e3cbf1ae6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd41d0917ef385d559cc54124e0d4647abc416c9b96ef49b6489149bdcc4a7319","name":"The Haddonfields","registered_at":"2026-06-16T10:13:11Z","symbol":"NIM1019810","token_address":"0x7ad5bc758bc3af0a89bcee921db7c709e952f9dd","type":"artist","uuid":"3a47e63d-71f7-40c5-b992-678e3cbf1ae6"}
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 0xd41d0917ef385d559cc54124e0d4647abc416c9b96ef49b6489149bdcc4a7319. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a47e63d-71f7-40c5-b992-678e3cbf1ae6.json and https://artists.proofprofile.net/proofs/artist/3a47e63d-71f7-40c5-b992-678e3cbf1ae6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
  text: {"copyright_id":"0xd41d0917ef385d559cc54124e0d4647abc416c9b96ef49b6489149bdcc4a7319","name":"The Haddonfields","registered_at":"2026-06-16T10:13:11Z","symbol":"NIM1019810","token_address":"0x7ad5bc758bc3af0a89bcee921db7c709e952f9dd","type":"artist","uuid":"3a47e63d-71f7-40c5-b992-678e3cbf1ae6"}
album: We Are Not Alone
  type: MusicAlbum
  date published: 2009-10-31
album: The Skin is the Best Part
  type: MusicAlbum
  date published: 2012-01-01
album: That's My Bike
  type: MusicAlbum
  date published: 2016-04-26
album: When Cowboys Cry
  type: MusicAlbum
  date published: 2018-05-18
album: EP-Idemic
  type: MusicAlbum
  date published: 2020-04-02