blockchain

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Across
  1. 4. Device that signs transactions
  2. 7. tree Data structure oused to create blocks
  3. 9. First block in a chain
  4. 11. A cryptographic fingerprint of data
Down
  1. 1. Type of attack with majority control
  2. 2. Blockchain that supports smart contracts
  3. 3. Popular consensus based on computing power
  4. 5. A private blockchain is usually
  5. 6. Open ledger of transactions
  6. 8. Consensus method using stake
  7. 10. Digital agreement in blockchain