Höwler
type: MusicGroup
genre: groove metal
genre: thrash metal
popularity: 4
followers: 1763
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1ed9aaec30b762bd8acb749279ceaa96eb433b4e06a03f6d5cbc959809783e8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b18310b9-2f05-47e0-a96d-3aa3a6a0fb03.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b18310b9-2f05-47e0-a96d-3aa3a6a0fb03.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b18310b9-2f05-47e0-a96d-3aa3a6a0fb03
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe1ed9aaec30b762bd8acb749279ceaa96eb433b4e06a03f6d5cbc959809783e8","name":"Höwler","registered_at":"2026-06-20T12:31:55Z","symbol":"NIM1613691","token_address":"0xedfad6163a36fb4c0057c17f5dae2fd742af874d","type":"artist","uuid":"b18310b9-2f05-47e0-a96d-3aa3a6a0fb03"}
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 0xe1ed9aaec30b762bd8acb749279ceaa96eb433b4e06a03f6d5cbc959809783e8. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b18310b9-2f05-47e0-a96d-3aa3a6a0fb03.json and https://artists.proofprofile.net/proofs/artist/b18310b9-2f05-47e0-a96d-3aa3a6a0fb03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xe1ed9aaec30b762bd8acb749279ceaa96eb433b4e06a03f6d5cbc959809783e8","name":"Höwler","registered_at":"2026-06-20T12:31:55Z","symbol":"NIM1613691","token_address":"0xedfad6163a36fb4c0057c17f5dae2fd742af874d","type":"artist","uuid":"b18310b9-2f05-47e0-a96d-3aa3a6a0fb03"}
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  type: MusicAlbum
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