Hidden Piano
type: MusicGroup
popularity: 45
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd988b3c7a930eeda6ffbb81b1fe48bc1c52efe63ceb96ce20394f75582af7810
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/4ed57c6a-c197-4109-988a-35984272e430.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ed57c6a-c197-4109-988a-35984272e430.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ed57c6a-c197-4109-988a-35984272e430
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd988b3c7a930eeda6ffbb81b1fe48bc1c52efe63ceb96ce20394f75582af7810","name":"Hidden Piano","registered_at":"2026-06-11T19:39:40Z","symbol":"NIM0103010","token_address":"0x14dd908a72da95762434770e298bfd06f96d784e","type":"artist","uuid":"4ed57c6a-c197-4109-988a-35984272e430"}
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 0xd988b3c7a930eeda6ffbb81b1fe48bc1c52efe63ceb96ce20394f75582af7810. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ed57c6a-c197-4109-988a-35984272e430.json and https://artists.proofprofile.net/proofs/artist/4ed57c6a-c197-4109-988a-35984272e430.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xd988b3c7a930eeda6ffbb81b1fe48bc1c52efe63ceb96ce20394f75582af7810","name":"Hidden Piano","registered_at":"2026-06-11T19:39:40Z","symbol":"NIM0103010","token_address":"0x14dd908a72da95762434770e298bfd06f96d784e","type":"artist","uuid":"4ed57c6a-c197-4109-988a-35984272e430"}
album: ourselves
  type: MusicAlbum
  date published: 2023-06-13
album: in my heart
  type: MusicAlbum
  date published: 2023-08-05
album: proceed
  type: MusicAlbum
  date published: 2023-08-13
album: in nowhere
  type: MusicAlbum
  date published: 2023-09-01
album: Hush Haven
  type: MusicAlbum
  date published: 2023-11-23
album: Serenity's Embrace
  type: MusicAlbum
  date published: 2023-12-06
album: Harmony of Heartbeats
  type: MusicAlbum
  date published: 2024-01-13
album: Shadow Reverie
  type: MusicAlbum
  date published: 2024-01-15
album: Sisu
  type: MusicAlbum
  date published: 2024-02-29
album: Journey's Mirage
  type: MusicAlbum
  date published: 2024-03-12
album: Flora
  type: MusicAlbum
  date published: 2024-03-19
album: Ripples of Peace
  type: MusicAlbum
  date published: 2024-03-29
album: Melodies of Dusk
  type: MusicAlbum
  date published: 2024-04-20
  track: Melodies of Dusk
    type: MusicRecording
    duration: PT2M40S
    duration ms: 160250
    explicit: false
    by artist: Hidden Piano
    in album: Melodies of Dusk
      type: MusicAlbum
      date published: 2024-04-20
    isrc code: QZAKB2381125
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T20:35:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7d29e167ef8695b6ca821f81b2936c4fe8470446b36af2a301a695253dc20eec
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958607
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958607
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2381125
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T21:01:11Z
    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 0x7d29e167ef8695b6ca821f81b2936c4fe8470446b36af2a301a695253dc20eec. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZAKB2381125.
      date published: 2026-07-18T21:01:11Z
    audio: Melodies of Dusk
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.539
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.407
      additional property: Energy
        type: PropertyValue
        value: 0.007
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.955
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.183
      additional property: Loudness (dB)
        type: PropertyValue
        value: -33.186
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sway
  type: MusicAlbum
  date published: 2024-05-16
album: Solace
  type: MusicAlbum
  date published: 2024-06-12
album: Little Things
  type: MusicAlbum
  date published: 2024-08-04
album: The Gemini
  type: MusicAlbum
  date published: 2024-09-04
  track: The Gemini
    type: MusicRecording
    duration: PT2M34S
    duration ms: 154000
    explicit: false
    by artist: Hidden Piano
    in album: The Gemini
      type: MusicAlbum
      date published: 2024-09-04
    isrc code: QZAKB2420578
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T06:52:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb43aa8c69917f06ba744cdb0af2a7ef15672511fd16e037e55a376eb30c55c32
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958839
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958839
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2420578
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: The Gemini
album: Saudade
album: Joy to the World
album: awakened to sunlight
album: Fragile Lines
album: When We Drift
album: Where The Fireflies Fade
album: The Beauty Of The Unsaid
album: Do You Wanna Build A Snowman
album: Traced In Dust
album: Bad Guy (Piano)
album: We Three Kings
album: Fix You (Piano Cover)
album: we'll meet again

OTSTimestamp
type: PropertyValue
value: 2026-07-20T07:01:59Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43aa8c69917f06ba744cdb0af2a7ef15672511fd16e037e55a376eb30c55c32. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZAKB2420578.
date published: 2026-07-20T07:01:59Z

The Gemini
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 73.485
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.344
additional property: Energy
  type: PropertyValue
  value: 0.007
additional property: Speechiness
  type: PropertyValue
  value: 0.04
additional property: Acousticness
  type: PropertyValue
  value: 0.996
additional property: Instrumentalness
  type: PropertyValue
  value: 0.888
additional property: Liveness
  type: PropertyValue
  value: 0.086
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.154
additional property: Loudness (dB)
  type: PropertyValue
  value: -34.671
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Saudade
type: MusicAlbum
date published: 2024-09-29

Joy to the World
type: MusicAlbum
date published: 2024-10-28

awakened to sunlight
type: MusicAlbum
date published: 2024-12-01

Fragile Lines
type: MusicAlbum
date published: 2025-01-08

When We Drift
type: MusicAlbum
date published: 2025-03-10

Where The Fireflies Fade
type: MusicAlbum
date published: 2025-04-25

The Beauty Of The Unsaid
type: MusicAlbum
date published: 2025-05-23

Do You Wanna Build A Snowman
type: MusicAlbum
date published: 2025-06-20

Traced In Dust
type: MusicAlbum
date published: 2025-07-12

Bad Guy (Piano)
type: MusicAlbum
date published: 2025-08-21

We Three Kings
type: MusicAlbum
date published: 2025-09-19

Fix You (Piano Cover)
type: MusicAlbum
date published: 2025-10-09

we'll meet again
type: MusicAlbum
date published: 2025-11-04