BtcBlockBot on Nostr: Whale alert! 🐋 Someone moved 15,886 BTC ($818M) in block 830,464 Whale alert! 🐋 Someone moved 15,886 BTC ($818M) in block 830,464 https://mempool.space/tx/17557f5876834081f323eee30268dc732b54e153eede6251efccf6470c994a43