mao/ひまわりキッズ
type: MusicGroup
popularity: 9
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1dc9a97c7a2833351e328e03e53742877433439392c39de6ead06e6a03bd78a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/063e54e2-51b1-4061-945c-6d901bf19c9e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/063e54e2-51b1-4061-945c-6d901bf19c9e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/063e54e2-51b1-4061-945c-6d901bf19c9e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc1dc9a97c7a2833351e328e03e53742877433439392c39de6ead06e6a03bd78a","name":"mao/ひまわりキッズ","registered_at":"2026-06-15T15:37:14Z","symbol":"NIM0753406","token_address":"0xf9d4fe8e0892fe976a08253ad06e603900abc8b4","type":"artist","uuid":"063e54e2-51b1-4061-945c-6d901bf19c9e"}
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 0xc1dc9a97c7a2833351e328e03e53742877433439392c39de6ead06e6a03bd78a. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/063e54e2-51b1-4061-945c-6d901bf19c9e.json and https://artists.proofprofile.net/proofs/artist/063e54e2-51b1-4061-945c-6d901bf19c9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0xc1dc9a97c7a2833351e328e03e53742877433439392c39de6ead06e6a03bd78a","name":"mao/ひまわりキッズ","registered_at":"2026-06-15T15:37:14Z","symbol":"NIM0753406","token_address":"0xf9d4fe8e0892fe976a08253ad06e603900abc8b4","type":"artist","uuid":"063e54e2-51b1-4061-945c-6d901bf19c9e"}