Basement Letters
type: MusicGroup
popularity: 6
followers: 267
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f11c1d0cfb8dabe1681283a49c02f9b5bd39afbc728bc38a6b06022470c47ed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/237c4e97-07f7-451c-96f9-ccc1b4dff604.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/237c4e97-07f7-451c-96f9-ccc1b4dff604.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/237c4e97-07f7-451c-96f9-ccc1b4dff604
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f11c1d0cfb8dabe1681283a49c02f9b5bd39afbc728bc38a6b06022470c47ed","name":"Basement Letters","registered_at":"2026-06-16T01:51:08Z","symbol":"NIM0899915","token_address":"0x66af36ad7ca1f3427c85acb2a865460c35cafa07","type":"artist","uuid":"237c4e97-07f7-451c-96f9-ccc1b4dff604"}
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 0x3f11c1d0cfb8dabe1681283a49c02f9b5bd39afbc728bc38a6b06022470c47ed. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/237c4e97-07f7-451c-96f9-ccc1b4dff604.json and https://artists.proofprofile.net/proofs/artist/237c4e97-07f7-451c-96f9-ccc1b4dff604.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x3f11c1d0cfb8dabe1681283a49c02f9b5bd39afbc728bc38a6b06022470c47ed","name":"Basement Letters","registered_at":"2026-06-16T01:51:08Z","symbol":"NIM0899915","token_address":"0x66af36ad7ca1f3427c85acb2a865460c35cafa07","type":"artist","uuid":"237c4e97-07f7-451c-96f9-ccc1b4dff604"}
album: Heavy Showers
  type: MusicAlbum
  date published: 2024-04-12
album: Bungalow Session (live acoustic version)
  type: MusicAlbum
  date published: 2024-05-31
album: Heavy Showers (Good Sunset Remix)
  type: MusicAlbum
  date published: 2024-06-09
album: Cut Throat Lane
  type: MusicAlbum
  date published: 2024-06-14
album: Death of a Salesman (4 track)
  type: MusicAlbum
  date published: 2024-06-21
album: Intermission
  type: MusicAlbum
  date published: 2024-09-06
album: Never Mind
  type: MusicAlbum
  date published: 2024-10-25
album: People to see
  type: MusicAlbum
  date published: 2025-01-31
  track: People to see
    type: MusicRecording
    duration: PT3M34S
    duration ms: 214064
    explicit: false
    by artist: Basement Letters
    in album: People to see
      type: MusicAlbum
      date published: 2025-01-31
    isrc code: QZFYY2599942
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T18:37:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x743fa82096259c718ff6b1431392a72f1b81b4832e7316ab9e093a0107c40110
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958319
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958319
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2599942
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T21:40:44Z
    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 0x743fa82096259c718ff6b1431392a72f1b81b4832e7316ab9e093a0107c40110. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:44Z), 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/QZFYY2599942.
      date published: 2026-07-16T21:40:44Z
    audio: People to see
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 77.506
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.597
      additional property: Energy
        type: PropertyValue
        value: 0.708
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.007
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.585
      additional property: Liveness
        type: PropertyValue
        value: 0.345
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.628
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.021
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Under the Light
  type: MusicAlbum
  date published: 2025-03-28
  track: Under the Light
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231754
    explicit: false
    by artist: Basement Letters
    in album: Under the Light
      type: MusicAlbum
      date published: 2025-03-28
    isrc code: QZHNC2584650
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T13:32:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9ec3fb28e1b1c70e055bc8c8dfb5846c9cd0a52ec18a0a751a7c2e5f03b05903
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958742
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958742
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2584650
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T16:36:12Z
    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 0x9ec3fb28e1b1c70e055bc8c8dfb5846c9cd0a52ec18a0a751a7c2e5f03b05903. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:12Z), 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/QZHNC2584650.
      date published: 2026-07-19T16:36:12Z
    audio: Under the Light
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.02
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Vault Session (live rehearsal)
album: Under the Light (live acoustic)
album: Not a Saint
album: Not a Saint (stripped)
album: Little Green Apples (live acoustic cover)
album: Juno
album: Developmental Stuttering

Danceability
type: PropertyValue
value: 0.817

Energy
type: PropertyValue
value: 0.689

Speechiness
type: PropertyValue
value: 0.046

Acousticness
type: PropertyValue
value: 0.221

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.272

Valence (Positivity)
type: PropertyValue
value: 0.763

Loudness (dB)
type: PropertyValue
value: -8.207

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

Vault Session (live rehearsal)
type: MusicAlbum
date published: 2025-06-06

Under the Light (live acoustic)
type: MusicAlbum
date published: 2025-07-04

Not a Saint
type: MusicAlbum
date published: 2025-08-15

Not a Saint (stripped)
type: MusicAlbum
date published: 2025-09-06

Little Green Apples (live acoustic cover)
type: MusicAlbum
date published: 2025-09-26

Juno
type: MusicAlbum
date published: 2025-10-17

Developmental Stuttering
type: MusicAlbum
date published: 2025-11-07