Grumpus
type: MusicGroup
popularity: 2
followers: 690
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb156bc7d5c511f8c641d9ba654c5480a3d38eacec7eb62a75d3ef4ed0b56e138
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/361fc5d3-781f-4c62-9167-1f6d894bc710.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/361fc5d3-781f-4c62-9167-1f6d894bc710.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/361fc5d3-781f-4c62-9167-1f6d894bc710
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
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 0xb156bc7d5c511f8c641d9ba654c5480a3d38eacec7eb62a75d3ef4ed0b56e138. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/361fc5d3-781f-4c62-9167-1f6d894bc710.json and https://artists.proofprofile.net/proofs/artist/361fc5d3-781f-4c62-9167-1f6d894bc710.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:44:13Z
album: Grumpus
  type: MusicAlbum
  date published: 2013-05-30
album: Man Child
  type: MusicAlbum
  date published: 2014-01-26
album: Sequestrian
  type: MusicAlbum
  date published: 2016-09-06
album: Divides
  type: MusicAlbum
  date published: 2017-02-03
album: Man Child Part 2
  type: MusicAlbum
  date published: 2020-03-04
album: Grumpus 2022 EP
  type: MusicAlbum
  date published: 2022-09-28
album: Cris de dégoût
  type: MusicAlbum
  date published: 2025-10-01