Helena Keys
type: MusicGroup
popularity: 5
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5d2a3117f550e3ef530ba3cec267f8161298bd3ed4e2d0e421a1d443620e915b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1de28669-7f95-4a58-b5a0-baf69a457401.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1de28669-7f95-4a58-b5a0-baf69a457401.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1de28669-7f95-4a58-b5a0-baf69a457401
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5d2a3117f550e3ef530ba3cec267f8161298bd3ed4e2d0e421a1d443620e915b","name":"Helena Keys","registered_at":"2026-06-16T00:00:25Z","symbol":"NIM0873472","token_address":"0x2ed3e30092db92674c371547749a918a18d2b306","type":"artist","uuid":"1de28669-7f95-4a58-b5a0-baf69a457401"}
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 0x5d2a3117f550e3ef530ba3cec267f8161298bd3ed4e2d0e421a1d443620e915b. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1de28669-7f95-4a58-b5a0-baf69a457401.json and https://artists.proofprofile.net/proofs/artist/1de28669-7f95-4a58-b5a0-baf69a457401.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T10:21:55Z
  text: {"copyright_id":"0x5d2a3117f550e3ef530ba3cec267f8161298bd3ed4e2d0e421a1d443620e915b","name":"Helena Keys","registered_at":"2026-06-16T00:00:25Z","symbol":"NIM0873472","token_address":"0x2ed3e30092db92674c371547749a918a18d2b306","type":"artist","uuid":"1de28669-7f95-4a58-b5a0-baf69a457401"}
album: OP. 2
  type: MusicAlbum
  date published: 2022-01-14
album: OP. 2
  type: MusicAlbum
  date published: 2022-01-14