The Sixth Letter
type: MusicGroup
genre: rap metal
popularity: 8
followers: 534
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1c369aa3eeed3077efcb795f0e508f139f11b8625c6e3a9f2454e36d0b757d3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8531601-71ef-499c-b944-a87ef6d449e6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8531601-71ef-499c-b944-a87ef6d449e6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8531601-71ef-499c-b944-a87ef6d449e6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb1c369aa3eeed3077efcb795f0e508f139f11b8625c6e3a9f2454e36d0b757d3","name":"The Sixth Letter","registered_at":"2026-06-20T21:54:31Z","symbol":"NIM1726267","token_address":"0xf88d320f347cfda8ebd81a10ec8fd8e85484e82b","type":"artist","uuid":"c8531601-71ef-499c-b944-a87ef6d449e6"}
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 0xb1c369aa3eeed3077efcb795f0e508f139f11b8625c6e3a9f2454e36d0b757d3. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8531601-71ef-499c-b944-a87ef6d449e6.json and https://artists.proofprofile.net/proofs/artist/c8531601-71ef-499c-b944-a87ef6d449e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xb1c369aa3eeed3077efcb795f0e508f139f11b8625c6e3a9f2454e36d0b757d3","name":"The Sixth Letter","registered_at":"2026-06-20T21:54:31Z","symbol":"NIM1726267","token_address":"0xf88d320f347cfda8ebd81a10ec8fd8e85484e82b","type":"artist","uuid":"c8531601-71ef-499c-b944-a87ef6d449e6"}
album: Over & Out
  type: MusicAlbum
  date published: 2010-10-31
album: Glass
  type: MusicAlbum
  date published: 2011-04-10
album: Butterflies
  type: MusicAlbum
  date published: 2011-09-04
album: Whoa! Is Me
  type: MusicAlbum
  date published: 2011-11-06
album: The King EP
  type: MusicAlbum
  date published: 2012-10-28
album: The Fallout
  type: MusicAlbum
  date published: 2013-06-09
album: Wake Up Call
  type: MusicAlbum
  date published: 2013-10-13
album: ill by mouth
  type: MusicAlbum
  date published: 2015-04-05
album: ill by mouth
  type: MusicAlbum
  date published: 2015-04-05
album: There's Nothing Holdin' Me Back
  type: MusicAlbum
  date published: 2016
album: The Sixth Letter EP
  type: MusicAlbum
  date published: 2016-07-15
album: The Sixth Letter EP
  type: MusicAlbum
  date published: 2016-07-15
album: Ghost Writers
  type: MusicAlbum
  date published: 2017-05-01
album: Uncanny Valley
  type: MusicAlbum
  date published: 2018-06-11
album: Empyrean
  type: MusicAlbum
  date published: 2020-02-06
album: Sugarnaut
  type: MusicAlbum
  date published: 2021-09-03
album: Sugarnaut (Acoustic)
  type: MusicAlbum
  date published: 2021-09-10
album: Paraffin
  type: MusicAlbum
  date published: 2021-09-17
album: Paraffin (Acoustic)
  type: MusicAlbum
  date published: 2021-09-24
album: Fall Forward
  type: MusicAlbum
  date published: 2021-10-01
album: Fall Forward (Acoustic)
  type: MusicAlbum
  date published: 2021-10-08
album: Don't Give Up
  type: MusicAlbum
  date published: 2021-10-15
album: Don't Give Up (Acoustic)
  type: MusicAlbum
  date published: 2021-10-22
album: Zero
  type: MusicAlbum
  date published: 2021-10-29
album: Zero (Acoustic)
  type: MusicAlbum
  date published: 2021-11-05
album: Hearts and Sea
  type: MusicAlbum
  date published: 2021-11-12
album: Hearts and Sea (Piano Version)
  type: MusicAlbum
  date published: 2021-11-19
album: Neo Death Experience
  type: MusicAlbum
  date published: 2022-09-09
album: Neo Death Experience (Deluxe Version)
  type: MusicAlbum
  date published: 2023-08-01
album: Grave Era
  type: MusicAlbum
  date published: 2023-10-31
album: Koschei
  type: MusicAlbum
  date published: 2025-01-31
album: Dead Right
  type: MusicAlbum
  date published: 2025-02-28
  track: Dead Right
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206470
    explicit: false
    by artist: The Sixth Letter
    in album: Dead Right
      type: MusicAlbum
      date published: 2025-02-28
    genre: rap metal
    isrc code: USA2P2505682
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T18:34:54+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957899
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2505682
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T19:36:39Z
    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 0xe8f020b16271a180e659240a2604d13135c0d862974465686051c656140020f7. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USA2P2505682.
      date published: 2026-07-13T19:36:39Z
    audio: Dead Right
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.195
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.383
      additional property: Energy
        type: PropertyValue
        value: 0.926
      additional property: Speechiness
        type: PropertyValue
        value: 0.127
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Blunt Force Drama
album: Entitled Wave
album: Radiant
album: Now I've Found You
album: Iconic
album: Grave Error

Instrumentalness
type: PropertyValue
value: 0.267

Liveness
type: PropertyValue
value: 0.116

Valence (Positivity)
type: PropertyValue
value: 0.48

Loudness (dB)
type: PropertyValue
value: -5.335

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Blunt Force Drama
type: MusicAlbum
date published: 2025-03-28

Entitled Wave
type: MusicAlbum
date published: 2025-04-25

Radiant
type: MusicAlbum
date published: 2025-05-23

Now I've Found You
type: MusicAlbum
date published: 2025-06-27

Iconic
type: MusicAlbum
date published: 2025-07-31

Grave Error
type: MusicAlbum
date published: 2025-10-31