Vera Hall
type: MusicGroup
description: Adell Hall Ward, better known as Vera Hall (April 6, 1902 – January 29, 1964), was an American folk singer, born in Livingston, Alabama. Best known for her 1937 song "Trouble So Hard", she was inducte
popularity: 18
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf04404b5f5450c6a54bd83b2f3ef7e743c8a203037ea97a0100eda5cd0ecfbf2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf04404b5f5450c6a54bd83b2f3ef7e743c8a203037ea97a0100eda5cd0ecfbf2","name":"Vera Hall","registered_at":"2026-06-14T17:21:53Z","symbol":"NIM0523043","token_address":"0xb29f18aa423147b441b940acba2adf6f642582be","type":"artist","uuid":"7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a"}
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 0xf04404b5f5450c6a54bd83b2f3ef7e743c8a203037ea97a0100eda5cd0ecfbf2. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a.json and https://artists.proofprofile.net/proofs/artist/7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T22:58:38Z
  text: {"copyright_id":"0xf04404b5f5450c6a54bd83b2f3ef7e743c8a203037ea97a0100eda5cd0ecfbf2","name":"Vera Hall","registered_at":"2026-06-14T17:21:53Z","symbol":"NIM0523043","token_address":"0xb29f18aa423147b441b940acba2adf6f642582be","type":"artist","uuid":"7b5bc32d-33e6-4e51-8b9d-bbca05b25e4a"}
album: Trouble so Hard (Remastered 2024)
  type: MusicAlbum
  date published: 1937-10-12