Jeffrey Querubin
type: MusicGroup
popularity: 21
followers: 731
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa16fc87b7c5ac37c480309a1c282cc8d41de6f2ab8722cf47b7b2ada415f0a51
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e714feb2-26ec-48e0-a12d-7f1859d4ed0d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e714feb2-26ec-48e0-a12d-7f1859d4ed0d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e714feb2-26ec-48e0-a12d-7f1859d4ed0d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa16fc87b7c5ac37c480309a1c282cc8d41de6f2ab8722cf47b7b2ada415f0a51","name":"Jeffrey Querubin","registered_at":"2026-06-12T12:27:25Z","symbol":"NIM0297641","token_address":"0xd0b78d8082e189f8d22056f0d2e4b5787636f3f5","type":"artist","uuid":"e714feb2-26ec-48e0-a12d-7f1859d4ed0d"}
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 0xa16fc87b7c5ac37c480309a1c282cc8d41de6f2ab8722cf47b7b2ada415f0a51. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e714feb2-26ec-48e0-a12d-7f1859d4ed0d.json and https://artists.proofprofile.net/proofs/artist/e714feb2-26ec-48e0-a12d-7f1859d4ed0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0xa16fc87b7c5ac37c480309a1c282cc8d41de6f2ab8722cf47b7b2ada415f0a51","name":"Jeffrey Querubin","registered_at":"2026-06-12T12:27:25Z","symbol":"NIM0297641","token_address":"0xd0b78d8082e189f8d22056f0d2e4b5787636f3f5","type":"artist","uuid":"e714feb2-26ec-48e0-a12d-7f1859d4ed0d"}
album: Kapit Lang
  type: MusicAlbum
  date published: 2020-09-25
album: May Masasandalan sa Pasko
  type: MusicAlbum
  date published: 2020-10-23
album: Makakarating Din
  type: MusicAlbum
  date published: 2021-01-22
album: Hilumin Mo
  type: MusicAlbum
  date published: 2021-06-18
album: Lipad
  type: MusicAlbum
  date published: 2021-09-10
  track: Lipad
    type: MusicRecording
    duration: PT3M50S
    duration ms: 230460
    explicit: false
    by artist: Jeffrey Querubin
    in album: Lipad
      type: MusicAlbum
      date published: 2021-09-10
    isrc code: PHC152100585
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T11:35:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb81e1c992fa14f42ef6fdfe8bcc80046eafadcec01a6882cce3c8f6f05a3f1e3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957699
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957699
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHC152100585
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T11:51:06Z
    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 0xb81e1c992fa14f42ef6fdfe8bcc80046eafadcec01a6882cce3c8f6f05a3f1e3. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/PHC152100585.
      date published: 2026-07-12T11:51:06Z
    audio: Lipad
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.889
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.405
      additional property: Energy
        type: PropertyValue
        value: 0.35
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.654
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.324
      additional property: Liveness
        type: PropertyValue
        value: 0.189
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.304
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.084
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Hero Within
  type: MusicAlbum
  date published: 2022-01-28
album: Sana Pwede Pa
  type: MusicAlbum
  date published: 2022-03-25
album: Mabalin Pay Koma
  type: MusicAlbum
  date published: 2022-04-22
album: I Will Be Here
  type: MusicAlbum
  date published: 2022-07-01
album: Sa Kapehan
  type: MusicAlbum
  date published: 2022-10-14
album: Pasko'y Tayo
  type: MusicAlbum
  date published: 2022-11-11
album: Sa Diyos Lahat ay Magagawa
  type: MusicAlbum
  date published: 2023-03-10
album: Anghel
  type: MusicAlbum
  date published: 2023-08-04
album: Pasko'y Magpakailanman
  type: MusicAlbum
  date published: 2023-09-29
album: I Can See The Light Now
  type: MusicAlbum
  date published: 2024-09-06
  track: I Can See The Light Now
    type: MusicRecording
    duration: PT5M39S
    duration ms: 339963
    explicit: false
    by artist: Jeffrey Querubin
    in album: I Can See The Light Now
      type: MusicAlbum
      date published: 2024-09-06
    isrc code: PHC152400869
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T12:36:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe331abcc10099fbc08e89a3bf7cc3791823d1c613f2accf6f79b986e1d395df9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957705
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957705
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHC152400869
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T12:50:42Z
    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
    audio: I Can See The Light Now
album: Kung Magkita Man Tayo
album: Sana Naman
album: Ikaw Lamang
album: Bawat Yapak
album: Tanging Ikaw Lang

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe331abcc10099fbc08e89a3bf7cc3791823d1c613f2accf6f79b986e1d395df9. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/PHC152400869.
date published: 2026-07-12T12:50:42Z

I Can See The Light Now
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 142.006
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: 0.278
additional property: Energy
  type: PropertyValue
  value: 0.32
additional property: Speechiness
  type: PropertyValue
  value: 0.041
additional property: Acousticness
  type: PropertyValue
  value: 0.261
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.263
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.181
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.39
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

Kung Magkita Man Tayo
type: MusicAlbum
date published: 2024-10-18

Sana Naman
type: MusicAlbum
date published: 2025-01-24

Ikaw Lamang
type: MusicAlbum
date published: 2025-04-04

Bawat Yapak
type: MusicAlbum
date published: 2025-05-30

Tanging Ikaw Lang
type: MusicAlbum
date published: 2025-09-19
track: Tanging Ikaw Lang
  type: MusicRecording
  duration: PT5M23S
  duration ms: 323145
  explicit: false
  by artist: Jeffrey Querubin
  in album: Tanging Ikaw Lang
    type: MusicAlbum
    date published: 2025-09-19
  isrc code: PHC152500933
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T01:00:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb1f650f9481c0af817bb17669ea1ba09de22cf5e2a90bf0b6c97ce26b5b5a1a8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957785
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957785
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHC152500933
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T01:55:31Z
  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 0xb1f650f9481c0af817bb17669ea1ba09de22cf5e2a90bf0b6c97ce26b5b5a1a8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PHC152500933.
    date published: 2026-07-13T01:55:31Z
  audio: Tanging Ikaw Lang
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.12
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.218
    additional property: Energy
      type: PropertyValue
      value: 0.16
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.791
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.018
    additional property: Liveness
      type: PropertyValue
      value: 0.104
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.255
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.585
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major