The Letterman
type: MusicGroup
popularity: 5
followers: 4706
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x316818dc19844622dde501895087bcd80cf65bbb35d07e9c2f15b9787432bb54
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e0c305f-213d-4db8-8919-5f4dbf3b94e7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e0c305f-213d-4db8-8919-5f4dbf3b94e7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5e0c305f-213d-4db8-8919-5f4dbf3b94e7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x316818dc19844622dde501895087bcd80cf65bbb35d07e9c2f15b9787432bb54","name":"The Letterman","registered_at":"2026-06-16T22:23:38Z","symbol":"NIM1194082","token_address":"0xd904e3ccbe253d64301a16a9ccc2dcf805d0b6da","type":"artist","uuid":"5e0c305f-213d-4db8-8919-5f4dbf3b94e7"}
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 0x316818dc19844622dde501895087bcd80cf65bbb35d07e9c2f15b9787432bb54. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e0c305f-213d-4db8-8919-5f4dbf3b94e7.json and https://artists.proofprofile.net/proofs/artist/5e0c305f-213d-4db8-8919-5f4dbf3b94e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x316818dc19844622dde501895087bcd80cf65bbb35d07e9c2f15b9787432bb54","name":"The Letterman","registered_at":"2026-06-16T22:23:38Z","symbol":"NIM1194082","token_address":"0xd904e3ccbe253d64301a16a9ccc2dcf805d0b6da","type":"artist","uuid":"5e0c305f-213d-4db8-8919-5f4dbf3b94e7"}
album: The Lettermen
  type: MusicAlbum
  date published: 1997
album: Breaking up Is Hard to Do
  type: MusicAlbum
  date published: 2013-07-22
album: Black Excellence (The Letterman)
  type: MusicAlbum
  date published: 2018-07-02
album: Don't Change
  type: MusicAlbum
  date published: 2018-07-04