cartoonhead
type: MusicGroup
popularity: 5
followers: 611
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35b4ac7c01ae87bc3fe99e83347bffe747b10e090b5d04a849d8415a8d6f97ec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954062
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954062
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/471222fd-7549-45a6-9e46-1912f47397d5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/471222fd-7549-45a6-9e46-1912f47397d5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/471222fd-7549-45a6-9e46-1912f47397d5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:39:10Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b4ac7c01ae87bc3fe99e83347bffe747b10e090b5d04a849d8415a8d6f97ec. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/471222fd-7549-45a6-9e46-1912f47397d5.json and https://artists.proofprofile.net/proofs/artist/471222fd-7549-45a6-9e46-1912f47397d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T07:49:29Z
album: Revolver
  type: MusicAlbum
  date published: 2022-06-17
album: Blonde
  type: MusicAlbum
  date published: 2022-07-22
album: The Web We Weaved
  type: MusicAlbum
  date published: 2022-08-19
album: How You Leapt
  type: MusicAlbum
  date published: 2022-10-14
album: This House Is Not a Morgue
  type: MusicAlbum
  date published: 2022-12-16
album: Live in the Hall
  type: MusicAlbum
  date published: 2023-03-17
album: Fresh Air
  type: MusicAlbum
  date published: 2023-09-01
album: Slick
  type: MusicAlbum
  date published: 2024-05-15
album: Clatter
  type: MusicAlbum
  date published: 2024-06-05
album: Part Timer
  type: MusicAlbum
  date published: 2024-07-12
album: Moving to the Same Groove
  type: MusicAlbum
  date published: 2024-08-07
album: Love Is All We've Got
  type: MusicAlbum
  date published: 2025-11-14