Bitcoin Steadies at $81K as Memecoins Surge and Quantum Security Advances

Bitcoin ended the week clinging to the $81,000 range on Friday, October 23, after U.S. spot Bitcoin ETFs recorded a sharp $635.6 million single-day outflow Thursday, erasing the prior session's gains and pushing the monthly tally back into the red. The selloff followed Bitcoin's failed attempt to hold above $84,000, with prices retreating to an intraday low near $80,989 before stabilizing. Analysts at Glassnode note that $80,000 represents roughly the average cost basis of corporate Bitcoin holdings, making that level a critical line in the sand for institutional sentiment.

Despite the turbulence, Friday morning brought a partial recovery. Bitcoin climbed 0.5% to around $81,700 as Asian equities steadied following Thursday's tech-led Nasdaq drop of 2.6%. CoinGlass data showed crypto liquidations totaling $406.27 million across 89,596 traders over 24 hours, underscoring the volatility that accompanied the swing. Traders are now closely watching the Federal Reserve's October 28 meeting for any signal that could shift short-term rate expectations and, by extension, crypto risk appetite.

Memecoins Outperform as Altcoin Season Indicator Ticks Higher

Altcoins outpaced Bitcoin on Friday, with CoinDesk reporting that the memecoin gauge surged 2.9% while the broader CoinDesk 80 index gained 1.4%. Pepe led the charge with a 14% jump in 24 hours, its largest single-day gain in a month. Ether added 0.9% to trade near $2,401, and CoinMarketCap's Altcoin Season indicator climbed to 58 out of 100, up from a Monday low of 54, as positive sentiment continued to build while Bitcoin traded within a tight range. Crypto futures volume declined 19% over 24 hours and liquidations fell 23%, suggesting the worst of the selling pressure had eased.

Separately, a significant development in blockchain security emerged this week as Bitcoin and Ethereum developers pushed forward with distinct approaches to post-quantum wallet protection. Bitcoin's BIP-360 proposes new spending rules, while Ethereum's EIP-8141 aims to support alternative signature verification. As of October 22, neither network yet offers existing holders a standard wallet option that replaces current transaction signatures, leaving a window of vulnerability that both communities are racing to close before practical quantum computing threats materialize.