Lefty Hand Cream
type: MusicGroup
popularity: 15
followers: 1280
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfdcbc06445d94fab77feddf328d90bea1b869ebfc50b4059bf581c4cbc32ae40
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/570eafbd-d43f-45dc-ab9e-406187224e1d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/570eafbd-d43f-45dc-ab9e-406187224e1d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/570eafbd-d43f-45dc-ab9e-406187224e1d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfdcbc06445d94fab77feddf328d90bea1b869ebfc50b4059bf581c4cbc32ae40","name":"Lefty Hand Cream","registered_at":"2026-06-14T13:35:14Z","symbol":"NIM0468955","token_address":"0xf2fae31aa626213eab4cf634d1af195410f93155","type":"artist","uuid":"570eafbd-d43f-45dc-ab9e-406187224e1d"}
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 0xfdcbc06445d94fab77feddf328d90bea1b869ebfc50b4059bf581c4cbc32ae40. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/570eafbd-d43f-45dc-ab9e-406187224e1d.json and https://artists.proofprofile.net/proofs/artist/570eafbd-d43f-45dc-ab9e-406187224e1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0xfdcbc06445d94fab77feddf328d90bea1b869ebfc50b4059bf581c4cbc32ae40","name":"Lefty Hand Cream","registered_at":"2026-06-14T13:35:14Z","symbol":"NIM0468955","token_address":"0xf2fae31aa626213eab4cf634d1af195410f93155","type":"artist","uuid":"570eafbd-d43f-45dc-ab9e-406187224e1d"}
album: Best Friend 西野 カナ (Original Artist)
  type: MusicAlbum
  date published: 2020-05-04
album: Best Friend
  type: MusicAlbum
  date published: 2020-09-14
album: Best Friend
  type: MusicAlbum
  date published: 2020-09-14