Masashi Kageyama
type: MusicGroup
popularity: 5
followers: 100
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1cd9e331b368e001295380a18aebb36802544ab88f660c371ca754e243cb857
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb1cd9e331b368e001295380a18aebb36802544ab88f660c371ca754e243cb857","name":"Masashi Kageyama","registered_at":"2026-06-16T17:20:59Z","symbol":"NIM1121866","token_address":"0x1d34fba591cb0e754ca3f60a75f09a4e1b1c558f","type":"artist","uuid":"4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3"}
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 0xb1cd9e331b368e001295380a18aebb36802544ab88f660c371ca754e243cb857. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3.json and https://artists.proofprofile.net/proofs/artist/4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb1cd9e331b368e001295380a18aebb36802544ab88f660c371ca754e243cb857","name":"Masashi Kageyama","registered_at":"2026-06-16T17:20:59Z","symbol":"NIM1121866","token_address":"0x1d34fba591cb0e754ca3f60a75f09a4e1b1c558f","type":"artist","uuid":"4f6cc7d0-1e53-43ea-b146-32c79a9f3ad3"}
album: Aporia
  type: MusicAlbum
  date published: 2025-01-24
album: Gimmick! (Official Arranged Soundtrack)
  type: MusicAlbum
  date published: 2025-01-31