Here's a script to check if your Steem Engine node is corrupt. It checks the block sequence as well as transaction organization. First, install ruby. I like to use the [Ruby Version Manager](https://rvm.io) for this part. Next, install Radiator: ```bash gem install radiator ``` Then create a file called `verify_steem_engine.rb` (note: we assume the node is on `http://127.0.0.1:5000`): ```ruby block_agent = Radiator::SSC::Blockchain.new(root_url: 'http://127.0.0.1:5000') block_num = 0 previous_hash = nil trx_ids = {} while !!(block = block_agent.block_info(block_num)) block_num % 1000 == 0 and print '.' if !!previous_hash && previous_hash != block.previousHash puts "\nprevious_hash: #{previous_hash}" puts "block.previousHash: #{block.previousHash}" abort("Problem detected at block_num: #{block_num}") end block.transactions.each do |trx| (trx_id = trx.transactionId) == 0 and next trx_id, idx = trx_id.split('-') if trx_ids.keys.include?(trx_id) && trx_ids[trx_id] != block_num puts "\nFound duplicate transaction id (#{trx_id}) already seen in block: #{trx_ids[trx_id]}" abort("Problem detected at block_num: #{block_num}") end trx_ids[trx_id] = block_num end block_num += 1 previous_hash = block['hash'] end puts "\nVerify complete, ending with block: #{block_num}" ``` Finally, run it: ```bash ruby -r radiator verify_steem_engine.rb ``` If everything is fine, you'll see a result like this: ``` ........................................................................................ Verify complete, ending with block: 95497 ``` Otherwise, if there's something amiss, I recommend you delete the `data` directory, [download the latest `blocks.log` file](https://discordapp.com/channels/539442545478991882/542209914370523146/557029301585838091), [and replay it](https://github.com/harpagon210/steemsmartcontracts/wiki/How-to-setup-a-Steem-Smart-Contracts-node#5-replay-from-file-blockslog).

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