Helppo E
type: MusicGroup
genre: finnish hip hop
popularity: 2
followers: 148
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0b23ef974d4b3f69077c8011f964fab20a3ec3fe6c60c51884bb55994f63f57
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0ea8cff-2c38-4fef-98f5-9b1b722993f0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0ea8cff-2c38-4fef-98f5-9b1b722993f0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b0ea8cff-2c38-4fef-98f5-9b1b722993f0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf0b23ef974d4b3f69077c8011f964fab20a3ec3fe6c60c51884bb55994f63f57","name":"Helppo E","registered_at":"2026-06-20T12:09:51Z","symbol":"NIM1609990","token_address":"0x6ad584c48835e2368ddb48bdcbaa32a6611b46c2","type":"artist","uuid":"b0ea8cff-2c38-4fef-98f5-9b1b722993f0"}
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 0xf0b23ef974d4b3f69077c8011f964fab20a3ec3fe6c60c51884bb55994f63f57. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0ea8cff-2c38-4fef-98f5-9b1b722993f0.json and https://artists.proofprofile.net/proofs/artist/b0ea8cff-2c38-4fef-98f5-9b1b722993f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xf0b23ef974d4b3f69077c8011f964fab20a3ec3fe6c60c51884bb55994f63f57","name":"Helppo E","registered_at":"2026-06-20T12:09:51Z","symbol":"NIM1609990","token_address":"0x6ad584c48835e2368ddb48bdcbaa32a6611b46c2","type":"artist","uuid":"b0ea8cff-2c38-4fef-98f5-9b1b722993f0"}
album: Helppo E & SLS
  type: MusicAlbum
  date published: 2021-07-16
album: MasterChef
  type: MusicAlbum
  date published: 2021-08-06
album: Liekki Palaa
  type: MusicAlbum
  date published: 2021-12-04
album: Lastenleikkiä
  type: MusicAlbum
  date published: 2022-05-31