Roll Call
type: MusicGroup
description: thumb|Senator Tim Wirth reading an issue of Roll Call in 1991 Roll Call is a newspaper and website published in Washington, D.C., United States, when the United States Congress is in session, reporti
popularity: 12
followers: 51
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeade5bae60e803323d1ad8f29fbd0d040bdd83e4392affd3d604ca7df773e1a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0f5892a-faee-48e2-a25b-a1679ff45cd4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0f5892a-faee-48e2-a25b-a1679ff45cd4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e0f5892a-faee-48e2-a25b-a1679ff45cd4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeade5bae60e803323d1ad8f29fbd0d040bdd83e4392affd3d604ca7df773e1a5","name":"Roll Call","registered_at":"2026-06-15T04:09:24Z","symbol":"NIM0677555","token_address":"0xf707356c76b3b718b8655bbd6c3b067deb569b8a","type":"artist","uuid":"e0f5892a-faee-48e2-a25b-a1679ff45cd4"}
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 0xeade5bae60e803323d1ad8f29fbd0d040bdd83e4392affd3d604ca7df773e1a5. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0f5892a-faee-48e2-a25b-a1679ff45cd4.json and https://artists.proofprofile.net/proofs/artist/e0f5892a-faee-48e2-a25b-a1679ff45cd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0xeade5bae60e803323d1ad8f29fbd0d040bdd83e4392affd3d604ca7df773e1a5","name":"Roll Call","registered_at":"2026-06-15T04:09:24Z","symbol":"NIM0677555","token_address":"0xf707356c76b3b718b8655bbd6c3b067deb569b8a","type":"artist","uuid":"e0f5892a-faee-48e2-a25b-a1679ff45cd4"}
album: Da Beginning Till Da End
  type: MusicAlbum
  date published: 2004-02-02
album: Ahwedie Abena
  type: MusicAlbum
  date published: 2021-05-25
album: The Demo
  type: MusicAlbum
  date published: 2022-10-02