Quiz

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Pick the right answer for each question (tick all that apply where boxes are shown). Pass mark 80%.

1. How many confirmations does a bridge deposit need before tDIVI is minted? 0 1 6 100

2. What makes bridge/mint safe against double credit? It is rate limited It is idempotent per outpoint (divi_txid and vout) Players sign it It needs two sequencers

3. What does bridge/withdraw do first? Sends DIVI immediately Burns the TDIVI and queues a payout Locks it in an HTLC Does nothing until a vote

4. Why is the bridge called custodial? It uses SHA256 The operator holds the real testnet DIVI and you trust them to pay It is slow It needs KYC

5. What is the hashlock in htlc/lock? The secret itself The SHA256 of the secret, in hex The recipient's address The timeout

6. Who may call htlc/claim, and when? Anyone, any time Only the recipient `to`, before the timeout Only the locker, after the timeout Only the sequencer

7. Who may call htlc/refund, and when? Only the locker, at or after the timeout The recipient, before the timeout Anyone, any time Nobody

8. In a cross-chain swap, where does the secret first become public? When A creates it In the receipt of A's claim on the gamechain In the Divi lock transaction It never does

9. In the swap, whose timeout is longer? The taker B's The maker A's, who holds the secret They must be equal Neither has one

10. What is `divi-swapd` (https://divi.cx/swap/) in this design? The side-chain node The reference for the Divi side of the swap A wallet A game