Polemic Heart
type: MusicGroup
genre: synthpop
genre: synthwave
popularity: 3
followers: 157
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf09f375f6b4b906c86fedcf75a47ea7b7008c61091ea7e9040de06d808f6eaf8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f97b19b-7ce5-4842-b4aa-ffb505725bc4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f97b19b-7ce5-4842-b4aa-ffb505725bc4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f97b19b-7ce5-4842-b4aa-ffb505725bc4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf09f375f6b4b906c86fedcf75a47ea7b7008c61091ea7e9040de06d808f6eaf8","name":"Polemic Heart","registered_at":"2026-06-20T05:18:51Z","symbol":"NIM1523420","token_address":"0xbd402209d28bdb6a81e1aac14428799057136044","type":"artist","uuid":"9f97b19b-7ce5-4842-b4aa-ffb505725bc4"}
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 0xf09f375f6b4b906c86fedcf75a47ea7b7008c61091ea7e9040de06d808f6eaf8. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f97b19b-7ce5-4842-b4aa-ffb505725bc4.json and https://artists.proofprofile.net/proofs/artist/9f97b19b-7ce5-4842-b4aa-ffb505725bc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0xf09f375f6b4b906c86fedcf75a47ea7b7008c61091ea7e9040de06d808f6eaf8","name":"Polemic Heart","registered_at":"2026-06-20T05:18:51Z","symbol":"NIM1523420","token_address":"0xbd402209d28bdb6a81e1aac14428799057136044","type":"artist","uuid":"9f97b19b-7ce5-4842-b4aa-ffb505725bc4"}
album: Polemic Heart (The Singles)
  type: MusicAlbum
  date published: 2018-11-11
album: Polemic Heart EP
  type: MusicAlbum
  date published: 2018-11-22
album: Fly Again
  type: MusicAlbum
  date published: 2019-03-01
album: Reactions
  type: MusicAlbum
  date published: 2019-06-22
album: Rubicund Disco
  type: MusicAlbum
  date published: 2020-11-27