Ledger CTO Charles Guillemet warned that Elliptic Curve Cryptography underpinning blockchain keys could be compromised by sufficiently powerful quantum computers, and said preparation must begin well before such capability arrives. On February 27, 2026, he described post quantum experiments inside secure elements, while experts caution that about seven million BTC, including roughly one million linked to Satoshi Nakamoto, could be exposed.

On February 24, 2026, the XRP Ledger Foundation announced rippled v3.1.1, which disables the Batch and fixBatchInnerSigs amendments due to a severe bug and advises validators to acknowledge new GPG keys as Ripple rotates its signing key. A devnet reset is scheduled for March 3, 2026, while mainnet and other XRPL-related networks will continue operating normally.

In the week just concluded, the Shiba Inu team launched the SOU (Shib Owes You) NFT initiative to help users affected by last September's Shibarium hack. Following this, Shibarium-focused account Susbarium and team member Lucie warned that scammers are creating fake SOU portals and phishing links to drain wallets. Users are being reminded that SOU NFTs will not be airdropped and can only be claimed via the official SHIB website, and that they should avoid suspicious links and never share private keys or seed phrases.

Over the last 24 hours, SHIB's spot flows showed a 129% swing toward net outflows as outflows of $6.24 million edged inflows of $6.14 million. Futures open interest climbed nearly 8% to $78.79 million. SHIB traded at $0.000006493, up 4.80% on the day and 0.41% for the week, while an intraday high reached $0.00000662.

On February 20, 2026, Santiment reported that XRP's 30-day MVRV stood at -4.1%, indicating the asset was slightly undervalued while many large-cap cryptocurrencies also appeared discounted. XRP was trading around $1.44 with volatility near prior 2024 cycle lows, and traders were watching a compression setup between $1.39 support and $1.44 resistance that could pave the way for a move toward $1.50 to $1.62. At the same time, Evernorth CEO Asheesh Birla pointed to rising RWA tokenization, RLUSD issuance above $1 billion and growing DEX activity on XRPL as signs of increasing institutional and on-chain participation.

This week, the Shiba Inu team launched the Shib Owes You (SOU) recovery framework on Ethereum to help users affected by the Shibarium exploit in September. K9 Finance, which says it is the largest impacted community, claims it was left out of the SOU NFT claim and has urged affected users to contact the SHIB team. As the program rolls out alongside K9's planned sunset of its Shibarium products on Feb. 25, 2026, Shiba Inu contributors have also warned about fake SOU portals seeking to drain user wallets.

Cardano is preparing an intra-era hard fork to protocol version 11, with targeted upgrades to Plutus performance, ledger consistency, and node security. On Feb. 21, the X account Cardano Updates announced the Plutus 1.58.0.0 release, while Intersect confirmed the van Rossem hard fork naming on Feb. 19.

x402 has gone live on the XRP Ledger, enabling AI agents to pay for services directly in XRP and RLUSD without using API keys or traditional accounts. Payments are handled per request using the x402 HTTP 402 "Payment Required" standard, with settlement occurring on-chain. Separately, phase two of Dubai's Real Estate Tokenization Project on the XRP Ledger has started, adding controlled secondary market trading for tokenized properties.

On Feb. 13, Bitcoin saw its largest short‑liquidation spike since September 2024, with 10,700 BTC shorts cleared as price rebounded from $65,799 to $69,434. It later hit $70,941 on Feb. 15 before easing to $69,333, while traders prepared for Fed minutes and the core PCE inflation report.