Open Letters
type: MusicGroup
genre: emocore
genre: midwest emo
popularity: 3
followers: 397
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x901c4b04f61decc8b127196dece344361954230bf1e516b8ac3e36277cdc9d11
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8838a253-180e-49ef-b2f2-0ac6b5d3eee0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8838a253-180e-49ef-b2f2-0ac6b5d3eee0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8838a253-180e-49ef-b2f2-0ac6b5d3eee0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x901c4b04f61decc8b127196dece344361954230bf1e516b8ac3e36277cdc9d11","name":"Open Letters","registered_at":"2026-06-17T13:07:52Z","symbol":"NIM1404905","token_address":"0x8be8fde8c383d73a02b5a27548a6e8a09b321512","type":"artist","uuid":"8838a253-180e-49ef-b2f2-0ac6b5d3eee0"}
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 0x901c4b04f61decc8b127196dece344361954230bf1e516b8ac3e36277cdc9d11. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8838a253-180e-49ef-b2f2-0ac6b5d3eee0.json and https://artists.proofprofile.net/proofs/artist/8838a253-180e-49ef-b2f2-0ac6b5d3eee0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x901c4b04f61decc8b127196dece344361954230bf1e516b8ac3e36277cdc9d11","name":"Open Letters","registered_at":"2026-06-17T13:07:52Z","symbol":"NIM1404905","token_address":"0x8be8fde8c383d73a02b5a27548a6e8a09b321512","type":"artist","uuid":"8838a253-180e-49ef-b2f2-0ac6b5d3eee0"}
album: 1-6
  type: MusicAlbum
  date published: 2013-04-14
album: 7-8
  type: MusicAlbum
  date published: 2013-07-30
album: This Song Was Supposed to Be Called "Existence Is Futile" But Revocation Stole It from Us
  type: MusicAlbum
  date published: 2014-05-03
album: 10-23
  type: MusicAlbum
  date published: 2015-08-15
album: Step Dad? Mor Like Step off a Cliff Fake Dad
  type: MusicAlbum
  date published: 2016-08-25