Sensei
type: MusicGroup
description: The term "先生", read in Japanese, in Chinese, in Korean, and in Vietnamese, is an honorific used in the Sinosphere. In Japanese, the term literally means "person born before another" or "one who co
popularity: 11
followers: 315
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ad0b7ed0ac08f9001cfae60d2ca5e99b1bac34417c68dda877b5cc01da58897
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/568c2e50-6412-43ae-be5c-f35b3667841f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/568c2e50-6412-43ae-be5c-f35b3667841f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/568c2e50-6412-43ae-be5c-f35b3667841f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:49:01Z
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 0x8ad0b7ed0ac08f9001cfae60d2ca5e99b1bac34417c68dda877b5cc01da58897. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/568c2e50-6412-43ae-be5c-f35b3667841f.json and https://artists.proofprofile.net/proofs/artist/568c2e50-6412-43ae-be5c-f35b3667841f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T17:49:01Z
album: SAD FACE SIPPIN'
  type: MusicAlbum
  date published: 2022-10-18
  track: SAD FACE SIPPIN'
    type: MusicRecording
    duration: PT1M31S
    duration ms: 91221
    explicit: false
    by artist: akumuh
    by artist: Sensei
    by artist: sundwn
    in album: SAD FACE SIPPIN'
      type: MusicAlbum
      date published: 2022-10-18
    isrc code: QZRP52244739
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-08T21:49:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb603465bcc7ed1ae7a9d6ab54d17d2e1da1fdbce1d3680a4b3d7b7ed01a5ed9a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52244739
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    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 0xb603465bcc7ed1ae7a9d6ab54d17d2e1da1fdbce1d3680a4b3d7b7ed01a5ed9a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZRP52244739.
      date published: 2026-06-13T13:32:09Z
    audio: SAD FACE SIPPIN'
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.525
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.443
      additional property: Energy
        type: PropertyValue
        value: 0.603
      additional property: Speechiness
        type: PropertyValue
        value: 0.483
      additional property: Acousticness
        type: PropertyValue
        value: 0.689
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.37
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.961
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: "Songs of December"
  type: MusicAlbum
  date published: 2021-06-16
  track: "Songs of December"
    type: MusicRecording
    duration: PT3M13S
    duration ms: 193697
    explicit: false
    by artist: Sensei
    by artist: 3am
    in album: "Songs of December"
      type: MusicAlbum
      date published: 2021-06-16
    isrc code: SE6QE2103921
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T07:45:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc1cbdad8da71d297eda28939bcca62412313f75f10b5623d5d8ef7930a936362
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960368
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960368
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6QE2103921
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T08:26:41Z
    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 0xc1cbdad8da71d297eda28939bcca62412313f75f10b5623d5d8ef7930a936362. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SE6QE2103921.
      date published: 2026-07-31T08:26:41Z
    audio: "Songs of December"
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.996
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.739
      additional property: Energy
        type: PropertyValue
        value: 0.514
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.613
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.113
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.512

Loudness (dB)
type: PropertyValue
value: -13.854

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major