build: prepare v0.18.5.0

[selsta]

No description provided.

[plowsof]

# monero-blockchain-export --data-dir /var/lib/monero/.bitmonero --blocksdat --output-file blockchain.dat --block-stop 3648000
2026-04-10 10:46:19.816	W Starting...
2026-04-10 10:46:19.816	W Export output file: blockchain.dat
# sha256sum blockchain.dat 
3703fb1a525ca140397fb52760534b618757345639415b87cde53d8de09db87f  blockchain.dat

height="3648000"
difficulty="0x8836f971100c162"
hash="0b4277c3e041564b30511202fdebabdb624d1c4272c70abdb9899a281ef18839"
node=127.0.0.1:18081
REQ=$(curl http://${node}/json_rpc -d '{"jsonrpc":"2.0","id":"0","method":"get_block_header_by_height","params":{"height":'${height}'}}' -H 'Content-Type: application/json')
DATA=$(echo $REQ | jq '.result.block_header')
actual_difficulty=$(echo $DATA | jq -r '.wide_cumulative_difficulty' )
actual_hash=$(echo $DATA | jq -r '.hash')
if [ "$actual_hash" != "$hash" ]; then 
        echo "hashes don't match"; exit
fi
if [ "$difficulty" != "$actual_difficulty" ]; then
        echo "difficulty not equal"; exit
fi
echo "OK"

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