Version 6.3.0 indexes the UTXO set for flash lookups. This is normal for the first 30 minutes. Reduce the dbcache size in the .conf file to 1024 MB.
: If a service claims you must pay a "release" or "activation" fee to receive "flashed" funds, it is 100% a scam. Verify Software : Only use official, well-known wallets like Bitcoin Core Flash Btc Transaction -core Network- 6.3 0 Download
The release of version 6.3.0 is not the end of the road. Developers are already working on , which will incorporate BitVM for trustless flash contracts. According to the roadmap, cross-chain flashes (e.g., BTC to ETH in under 5 seconds) are expected by Q4 2025. Version 6