Ketchup Mania
type: MusicGroup
genre: j-rock
genre: melodic hardcore
genre: shibuya-kei
popularity: 7
followers: 1226
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d35d34331e04c556c7558ea64995dfcb2525bb55156bc8676b1f3423794b7a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953846
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953846
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/015d2df4-b955-4ec0-b4a4-9fea0b083428.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/015d2df4-b955-4ec0-b4a4-9fea0b083428.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/015d2df4-b955-4ec0-b4a4-9fea0b083428
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:48:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0d35d34331e04c556c7558ea64995dfcb2525bb55156bc8676b1f3423794b7a9","name":"Ketchup Mania","registered_at":"2026-06-15T13:58:05Z","symbol":"NIM0729747","token_address":"0x3b49294d46e4560d8c0fff3569f7ee7c34f6aa3d","type":"artist","uuid":"015d2df4-b955-4ec0-b4a4-9fea0b083428"}
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 0x0d35d34331e04c556c7558ea64995dfcb2525bb55156bc8676b1f3423794b7a9. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/015d2df4-b955-4ec0-b4a4-9fea0b083428.json and https://artists.proofprofile.net/proofs/artist/015d2df4-b955-4ec0-b4a4-9fea0b083428.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:48:34Z
  text: {"copyright_id":"0x0d35d34331e04c556c7558ea64995dfcb2525bb55156bc8676b1f3423794b7a9","name":"Ketchup Mania","registered_at":"2026-06-15T13:58:05Z","symbol":"NIM0729747","token_address":"0x3b49294d46e4560d8c0fff3569f7ee7c34f6aa3d","type":"artist","uuid":"015d2df4-b955-4ec0-b4a4-9fea0b083428"}
album: EVERYTIME MUSIC FREAK
  type: MusicAlbum
  date published: 2003-07-16
album: ..JUST IN LUST
  type: MusicAlbum
  date published: 2004-06-02
album: ..JUST IN LUST
  type: MusicAlbum
  date published: 2004-06-02
album: Love Me Til U Don't
  type: MusicAlbum
  date published: 2005-07-02
album: Love Me Til U Don't
  type: MusicAlbum
  date published: 2005-07-02
album: Jingleberry
  type: MusicAlbum
  date published: 2005-12-07
album: ジングルベリー
  type: MusicAlbum
  date published: 2005-12-07
album: 涙☆バキュームサウンド
  type: MusicAlbum
  date published: 2006-01-18
album: Namida Vacuum Sound
  type: MusicAlbum
  date published: 2006-01-18
album: GREETINGS FROM TOKYO
  type: MusicAlbum
  date published: 2006-02-15
  track: Your World
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159400
    explicit: false
    by artist: Ketchup Mania
    in album: GREETINGS FROM TOKYO
      type: MusicAlbum
      date published: 2006-02-15
    genre: j-rock
    genre: melodic hardcore
    genre: shibuya-kei
    isrc code: TCJPO2135718
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T11:44:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x61882a737016ede35982c484358ffa02c1004cc71a49bf8f50d5c84c13ee0562
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPO2135718
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x61882a737016ede35982c484358ffa02c1004cc71a49bf8f50d5c84c13ee0562. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPO2135718.
      date published: 2026-07-05T18:48:28Z
    audio: Your World
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.522
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.631
      additional property: Energy
        type: PropertyValue
        value: 0.96
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.019
      additional property: Liveness
        type: PropertyValue
        value: 0.084
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.924
      additional property: Loudness (dB)
        type: PropertyValue
        value: 0.528
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: GREETINGS FROM TOKYO
  type: MusicAlbum
  date published: 2006-02-15
album: Your World
  type: MusicAlbum
  date published: 2006-05-10
album: Your World
  type: MusicAlbum
  date published: 2006-05-10
album: U・R・G・E
  type: MusicAlbum
  date published: 2007-05-09
album: L・O・V・E
  type: MusicAlbum
  date published: 2007-08-22
album: BAD! BAD! BAD!
  type: MusicAlbum
  date published: 2008-02-20
album: PLEASE! MARRY ME!!
  type: MusicAlbum
  date published: 2008-05-21
album: F・L・A・G
  type: MusicAlbum
  date published: 2008-06-11
album: THE BEST OF ketchup mania
  type: MusicAlbum
  date published: 2009-04-08
track: It's Important
  type: MusicRecording
  duration: PT2M16S
  duration ms: 136893
  explicit: false
  by artist: Ketchup Mania
  in album: GOOD GIRLS DON'T
    type: MusicAlbum
    date published: 2003-04-25
  isrc code: JPB750315903
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T23:26:47+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: It's Important

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x15db417ca4b79b59927d36ba89040410e11c34666cbb494d6212c6040189801c

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960481

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960481

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB750315903

OTSTimestamp
type: PropertyValue
value: 2026-07-31T23:51:35Z

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 0x15db417ca4b79b59927d36ba89040410e11c34666cbb494d6212c6040189801c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/JPB750315903.
date published: 2026-07-31T23:51:35Z

It's Important
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 121.193
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.458
additional property: Energy
  type: PropertyValue
  value: 0.944
additional property: Speechiness
  type: PropertyValue
  value: 0.04
additional property: Acousticness
  type: PropertyValue
  value: 0.001
additional property: Instrumentalness
  type: PropertyValue
  value: 0.012
additional property: Liveness
  type: PropertyValue
  value: 0.363
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.964
additional property: Loudness (dB)
  type: PropertyValue
  value: -8.423
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Major