45
type: MusicGroup
genre: jazz-rap
description: 45 may refer to: 45 (number), the natural number following 44 and preceding 46 one of the years 45 BC, AD 45, 1945, 2045 Arts and entertainment Film 45 (2009 film), a short psychological thriller
popularity: 16
followers: 1937
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8f9d7e61c2eca79b03d9ebf93ca2bafef82ab96a09592444e0e59b9be27180e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953783
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953783
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d64a4baf-fc33-486b-b72f-dd5cf2b85d26.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d64a4baf-fc33-486b-b72f-dd5cf2b85d26.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d64a4baf-fc33-486b-b72f-dd5cf2b85d26
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:24:43Z
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 0xe8f9d7e61c2eca79b03d9ebf93ca2bafef82ab96a09592444e0e59b9be27180e. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d64a4baf-fc33-486b-b72f-dd5cf2b85d26.json and https://artists.proofprofile.net/proofs/artist/d64a4baf-fc33-486b-b72f-dd5cf2b85d26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:24:43Z
album: HELLO FRIENDS
  type: MusicAlbum
  date published: 2008-02-06
album: Hello Friends
  type: MusicAlbum
  date published: 2008-05-23
album: THE REVENGE OF SOUL
  type: MusicAlbum
  date published: 2009-05-13
album: Big Man Hunting/Que Chevere
  type: MusicAlbum
  date published: 2010-01-15
album: Stop! Look! Listen!
  type: MusicAlbum
  date published: 2011-12-07
album: Imaginary Island
  type: MusicAlbum
  date published: 2020-12-25
album: Imaginary Paradise
  type: MusicAlbum
  date published: 2021-01-25
album: Imaginary Paradise
  type: MusicAlbum
  date published: 2021-01-25
album: Flash Back Memories
  type: MusicAlbum
  date published: 2021-02-25
album: Imaginary Freedom
  type: MusicAlbum
  date published: 2021-05-25
album: Imaginary Freedom
  type: MusicAlbum
  date published: 2021-05-25
album: Imaginary Satellite
  type: MusicAlbum
  date published: 2022-01-25
album: Imaginary Wolf
  type: MusicAlbum
  date published: 2022-02-25
album: What Is Peace 4 U
  type: MusicAlbum
  date published: 2022-03-25
album: What Is Peace 4 U
  type: MusicAlbum
  date published: 2022-03-25
  track: What Is Peace 4 U
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196880
    explicit: false
    by artist: 45
    in album: What Is Peace 4 U
      type: MusicAlbum
      date published: 2022-03-25
    isrc code: TCJPR2233330
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T15:35:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x98922732b9f8718e729b5084e36980d0b48c4569b921fdbeb259852b803c7219
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958436
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958436
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2233330
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T16:42:22Z
    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 0x98922732b9f8718e729b5084e36980d0b48c4569b921fdbeb259852b803c7219. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPR2233330.
      date published: 2026-07-17T16:42:22Z
    audio: What Is Peace 4 U
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.952
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.507
      additional property: Energy
        type: PropertyValue
        value: 0.558
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.176
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.82
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.541
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.248
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Make You Smile 2022
  type: MusicAlbum
  date published: 2022-05-25
album: Make You Smile 2022
  type: MusicAlbum
  date published: 2022-05-25
album: Imaginary Door
  type: MusicAlbum
  date published: 2022-09-01
album: Walking, Working, Walking
  type: MusicAlbum
  date published: 2023-04-25
album: Walking, Working, Walking
  type: MusicAlbum
  date published: 2023-04-25
album: Sampo Music 01
  type: MusicAlbum
  date published: 2023-06-25
album: Sampo Music 01
  type: MusicAlbum
  date published: 2023-06-25
album: Elegant Steps
  type: MusicAlbum
  date published: 2023-10-25
album: Elegant Steps
  type: MusicAlbum
  date published: 2023-10-25
album: Future Ball
  type: MusicAlbum
  date published: 2023-12-25
album: Imaginary World
  type: MusicAlbum
  date published: 2024-03-25
album: Nagi
album: ACoS (feat. HATSUNE MIKU)
album: red-orange sphere

Imaginary World
type: MusicAlbum
date published: 2024-03-25

Nagi
type: MusicAlbum
date published: 2024-06-25

Nagi
type: MusicAlbum
date published: 2024-06-25

ACoS (feat. HATSUNE MIKU)
type: MusicAlbum
date published: 2024-10-25

red-orange sphere
type: MusicAlbum
date published: 2024-12-25

red-orange sphere
type: MusicAlbum
date published: 2024-12-25