647
type: MusicGroup
genre: opm
genre: pinoy alternative
genre: pinoy indie
description: upright=1.35|thumb|Cheomseongdae in Gyeongju (South Korea) __NOTOC__ Year 647 (DCXLVII) was a common year starting on Monday of the Julian calendar. The denomination 647 for this year has been used si
popularity: 4
followers: 1934
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/6e9f5719-e255-4903-8cba-863debb1ba92.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e9f5719-e255-4903-8cba-863debb1ba92
additional property: OTSTimestamp
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  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x39b8048eb6a49cbbd848fa3596819bd9dea739c27934dacc7695cd6580f3e5f2. 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/6e9f5719-e255-4903-8cba-863debb1ba92.json and https://artists.proofprofile.net/proofs/artist/6e9f5719-e255-4903-8cba-863debb1ba92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Panaginip
  type: MusicAlbum
  date published: 2019-04-26
album: Hangganan
  type: MusicAlbum
  date published: 2020-02-07
album: Panaginip
  type: MusicAlbum
  date published: 2020-02-08
album: Kasama Ka
  type: MusicAlbum
  date published: 2021-01-08
album: 'Di Mo Na 'Ko Maloloko
  type: MusicAlbum
  date published: 2021-03-19
album: Wag Hayaan
  type: MusicAlbum
  date published: 2022-05-27
album: Lisan
  type: MusicAlbum
  date published: 2023-06-02
  track: Lisan
    type: MusicRecording
    duration: PT4M6S
    duration ms: 246899
    explicit: false
    by artist: 647
    in album: Lisan
      type: MusicAlbum
      date published: 2023-06-02
    genre: opm
    genre: pinoy alternative
    genre: pinoy indie
    isrc code: PHS112300211
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    additional property: CopyrightStatus
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS112300211
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T02:02:04Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34b9a047c06146a89a55defe56497573cb171721918e48ca6c5223a2e95082. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:02:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS112300211.
      date published: 2026-07-21T02:02:04Z
    audio: Lisan
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.963
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.639
      additional property: Energy
        type: PropertyValue
        value: 0.647
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.488
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.774
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.037
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Pintig
  type: MusicAlbum
  date published: 2023-09-01