The Open Network slashed block times from 10 seconds to 400 milliseconds on April 9, 2026, after activating Catchain 2.0, a redesigned consensus mechanism that makes TON one of the fastest layer 1 blockchains in production. Payment transactions now settle in roughly one second, and trades execute in what the TON Foundation calls “real time.”
A layer 1 blockchain is the base network that processes and finalizes transactions on its own chain, rather than relying on a secondary network for speed or cost savings.
Key takeaways
- TON block times dropped from 10 seconds to 400 milliseconds after the Catchain 2.0 upgrade went live on April 9, 2026.
- Transaction finality is now sub-second, positioning TON among the fastest layer 1 blockchains alongside Solana and Sui.
- Annual inflation will rise from 0.6% to 3.6% because faster blocks mean more validator rewards.
- This is step one of seven in the “Make TON Great Again” (MTONGA) roadmap, with a 6x fee reduction planned next.
What changed under the hood
Catchain 2.0 replaces the original consensus algorithm that TON has used since its 2020 launch. The new mechanism includes a streaming layer that pushes state updates to applications almost instantly, rather than waiting for full block confirmation. The TON Foundation described the upgrade as “not a performance benchmark” but “a foundational change” to how the network reaches agreement.
The upgrade also implemented the QUIC transport protocol, which reduces latency between validator nodes. Developers who want to take full advantage of the speed gains will need to switch from polling-based updates to streaming APIs, specifically TON Center v3, TONAPI, or AppKit.
“The blockchain is faster. Apps need to catch up,” the TON Foundation stated in its official announcement.
The inflation trade-off
Faster blocks come with an economic side effect. Because validators produce roughly six times more blocks per hour, their staking rewards increase proportionally. TON’s annual inflation rate is projected to jump from approximately 0.6% to 3.6%.
The TON Foundation expects rewards to “settle at a new equilibrium” as more stakers join the network, drawn by the higher returns. Whether that equilibrium arrives before the increased token supply pressures the price remains an open question. TON traded at $1.28 on April 10, down 84% from its all-time high of $8.24 set in June 2024, with a market cap of $3.17 billion.
Why Telegram’s 1 billion users matter
TON’s speed upgrade is inseparable from its distribution advantage: deep integration with Telegram, which has more than 1 billion monthly active users. The messaging app already supports an in-app crypto wallet with self-custodial vaults launched in February 2026, yield earning on Bitcoin, USDT, and Ethereum, and perpetual futures trading through the Lighter DEX integration.
Pavel Durov, Telegram’s CEO, promoted the upgrade to his audience, calling the transaction experience “seamless as sending a message in Telegram.” Sub-second finality makes TON Mini Apps, the lightweight programs that run inside Telegram chats, viable for use cases that 10-second confirmation times previously ruled out: real-time payments, in-chat trading, and responsive gaming.
The MTONGA roadmap ahead
Catchain 2.0 is step one of seven in the “Make TON Great Again” plan, known as MTONGA. Durov confirmed that the next step will cut transaction fees by 6x, reducing costs on a network where fees are already fractions of a cent.
The remaining five steps have not been publicly detailed. If the roadmap follows the pattern of speed first, then cost reduction, subsequent phases likely target developer tooling, cross-chain interoperability, or governance changes, though TON has not confirmed specifics.
For blockchain networks competing on speed, TON’s 400-millisecond block time puts it in direct competition with Solana (400ms slots) and Sui (under 500ms finality). The difference is Telegram’s built-in distribution channel, which no other layer 1 can match.
FAQ
What is TON’s Catchain 2.0 upgrade?
Catchain 2.0 is a new consensus mechanism for The Open Network that replaced the original algorithm used since 2020. It reduces block times from 10 seconds to 400 milliseconds, enabling sub-second transaction finality and real-time trade settlement across the TON blockchain.
How does the TON upgrade affect Telegram users?
Telegram users with the in-app crypto wallet will experience near-instant payments and faster Mini App interactions. Sub-second finality makes real-time in-chat trading, instant crypto transfers, and responsive blockchain-based games possible for Telegram’s 1 billion monthly users.
Will TON’s inflation increase affect the Toncoin price?
TON’s annual inflation will rise from 0.6% to 3.6% because faster block production generates more validator rewards. The TON Foundation expects this to attract more stakers, which could offset selling pressure. Toncoin currently trades at $1.28, down 84% from its June 2024 all-time high of $8.24.
