coders.sh *
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Mission brief
In a blockchain ledger, find any transaction_hash that appears in two different block_ids.
Keep practicing
Similar difficulty and topics — pick up where you left off or stretch your SQL skills.
| Icon | Title | Complexity | Status | Solve |
|---|---|---|---|---|
| The Skimming Intern | Medium | Not solved | Solve | |
| Git Blame Detective | Medium | Not solved | Solve | |
| The Shadow Follower | Hard | Not solved | Solve |