Q4 2025: Five stories that shaped cryptocurrency
Quarterly retrospective covering October 1–December 31, 2025. Dated December 31, 2025. Stories selected for market impact, regulatory significance, and consequences for cryptocurrency infrastructure.
1. October’s liquidation shock exposes the market’s leverage
The October 10 selloff triggered more than $19 billion in cryptocurrency liquidations over 24 hours, according to CoinGlass figures cited by CoinDesk Research. Renewed U.S.–China tariff tensions struck a market with crowded leveraged positions, and forced selling spread across major tokens and smaller assets. CoinDesk’s analysis described a 43% contraction in perpetual-futures open interest between October 10 and 11, alongside disrupted liquidity and collateral-price stress. The episode was the quarter’s defining market shock because it exposed how macroeconomic news, leverage, and exchange infrastructure could combine to amplify a decline. Source: CoinDesk Research, October 17, updated October 30.
2. Ethereum’s Fusaka upgrade brings data-availability sampling to mainnet
Ethereum’s Fusaka upgrade went live on December 3, with PeerDAS as its central scaling feature. Peer data-availability sampling allows participating nodes to check portions of blob data, supporting higher data capacity for rollups without requiring every node to download every blob in full. The rollout also introduced a mechanism for subsequent blob-parameter adjustments, separating those capacity changes from larger named upgrades. For layer-two networks, this was an important infrastructure development aimed at expanding the data space on which their transactions depend. Sources: Optimism engineering report, December 3, Ethereum Foundation technical announcement.
3. New Solana, Litecoin, and Hedera funds broaden U.S. crypto access
October 28 brought the trading debuts of Bitwise’s Solana Staking ETF and Canary’s Litecoin and Hedera ETFs, extending the range of digital assets available through U.S. exchange-traded products. The Block reported approximately $65 million in combined first-day trading volume, led by the Solana fund. Bitwise described BSOL as offering direct SOL exposure with an intention to stake its holdings, connecting investment access with the network’s staking mechanism. The launches illustrated how the product market was expanding beyond Bitcoin and Ether following the quarter’s earlier changes to listing standards. Sources: The Block, October 28, Bitwise launch announcement.
4. DTC receives regulatory relief for a securities-tokenization service
DTCC announced on December 11 that its subsidiary DTC had received an SEC staff no-action letter supporting a service to tokenize eligible assets held in DTC custody within a controlled production environment. The company anticipated an initial rollout in the second half of 2026. The development mattered because tokenization was moving into the infrastructure responsible for holding and recording large volumes of conventional securities. It was a step toward a defined service with operational conditions and a future rollout, rather than a declaration that all DTC-held assets had already moved onto blockchains. Source: DTCC, December 11.
5. The OCC conditionally approves five national trust bank applications
The Office of the Comptroller of the Currency announced conditional approval of five national trust bank applications on December 12. The decisions covered new charters for First National Digital Currency Bank and Ripple National Trust Bank, plus conversions involving BitGo, Fidelity Digital Assets, and Paxos. The approvals marked another step in bringing digital-asset businesses under federal banking supervision and reflected the sector’s effort to secure regulated institutional structures. The approvals remained conditional: the applicants had to meet the OCC’s requirements before receiving the full benefit of the proposed charter arrangements. Source: OCC, December 12.