koi.
type: MusicGroup
genre: pinoy hip hop
genre: pinoy r&b
popularity: 5
followers: 1066
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad07f554f3662dc8cd8c51dc159a60d5a5d293dbe88cf013312303a30cf3af58
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/def27380-328f-4842-aa8b-d257e6b38d1b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/def27380-328f-4842-aa8b-d257e6b38d1b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/def27380-328f-4842-aa8b-d257e6b38d1b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07f554f3662dc8cd8c51dc159a60d5a5d293dbe88cf013312303a30cf3af58. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/def27380-328f-4842-aa8b-d257e6b38d1b.json and https://artists.proofprofile.net/proofs/artist/def27380-328f-4842-aa8b-d257e6b38d1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
album: Tapatin
  type: MusicAlbum
  date published: 2021-06-04
album: Tapatin
  type: MusicAlbum
  date published: 2021-06-04
album: Hangarin
  type: MusicAlbum
  date published: 2023-06-02
album: Hangarin
  type: MusicAlbum
  date published: 2023-06-02
  track: Hangarin
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210247
    explicit: false
    by artist: koi.
    in album: Hangarin
      type: MusicAlbum
      date published: 2023-06-02
    genre: pinoy hip hop
    genre: pinoy r&b
    isrc code: TCAHB2376713
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T18:02:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe8c35044b011a35197fd4e817dad666f773eabd448d3a81fdc69b10f1faabced
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959043
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959043
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHB2376713
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T18:40:26Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c35044b011a35197fd4e817dad666f773eabd448d3a81fdc69b10f1faabced. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAHB2376713.
      date published: 2026-07-21T18:40:26Z
    audio: Hangarin
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.918
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.779
      additional property: Energy
        type: PropertyValue
        value: 0.541
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.329
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.881
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Balingkinitan
  type: MusicAlbum
  date published: 2024-03-22
album: Anong Nangyari
  type: MusicAlbum
  date published: 2024-12-04
album: Tadhana
  type: MusicAlbum
  date published: 2025-03-28
  track: Tadhana
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222000
    explicit: false
    by artist: koi.
    in album: Tadhana
      type: MusicAlbum
      date published: 2025-03-28
    genre: pinoy hip hop
    genre: pinoy r&b
    isrc code: NL8RL2507075
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T15:13:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc1a4ff2ac28f6011c8b47e280376c15dd265629056701bd4db02daba23b9ad89
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958166
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958166
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL8RL2507075
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:55:19Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a4ff2ac28f6011c8b47e280376c15dd265629056701bd4db02daba23b9ad89. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NL8RL2507075.
      date published: 2026-07-15T15:55:19Z
    audio: Tadhana
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.021
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.677
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Energy
type: PropertyValue
value: 0.499

Speechiness
type: PropertyValue
value: 0.037

Acousticness
type: PropertyValue
value: 0.552

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.098

Valence (Positivity)
type: PropertyValue
value: 0.43

Loudness (dB)
type: PropertyValue
value: -5.905

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major