Isao Hayashi
type: MusicGroup
genre: enka
genre: kayokyoku
description: was a Japanese popular music and military music singer and composer. He took part in the Japan's famous year-end show Kōhaku Uta Gassen eleven times. One of the well-known songs composed by him is th
popularity: 3
followers: 621
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xb795f24d2bb7fa47d371e740adab8bb9eccef16e99cfc46baa626e9af7bf9ef9
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8838d9f-c672-425b-be25-1cc0950f8ef3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8838d9f-c672-425b-be25-1cc0950f8ef3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8838d9f-c672-425b-be25-1cc0950f8ef3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb795f24d2bb7fa47d371e740adab8bb9eccef16e99cfc46baa626e9af7bf9ef9. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8838d9f-c672-425b-be25-1cc0950f8ef3.json and https://artists.proofprofile.net/proofs/artist/c8838d9f-c672-425b-be25-1cc0950f8ef3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
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album: Dansu Paati no Yoru
  type: MusicAlbum
  date published: 2015-03-09