Telos instant finality is live on mainnet, giving applications a much faster settlement signal for on-chain activity. Telos has transitioned its mainnet to Savanna consensus, reducing protocol finality from approximately 165 seconds to approximately one second.
Blocks are produced every 0.5 seconds, while transactions can now become irreversible after two blocks.
For users, this means faster certainty that an on-chain transaction is complete. For Web3 applications and quest platforms such as Afyniti, it creates a stronger foundation for verifying blockchain activity quickly and reliably.
What is Telos Instant Finality?
Direct answer: Telos Instant Finality is a Savanna consensus upgrade that lets Telos transactions become irreversible in approximately one second.
Before the Savanna upgrade, Telos produced blocks every 0.5 seconds, but its last irreversible block remained approximately 330 blocks behind the head of the chain.
This meant that a transaction could appear on-chain quickly while taking around 165 seconds to reach irreversible status.
Savanna has reduced that distance to two blocks:
- Block production time: 0.5 seconds
- Previous finality time: approximately 165 seconds
- New finality time: approximately one second
- Blocks required for irreversibility: two
This distinction matters because fast block production and fast finality are not the same thing.
Block production determines how quickly a transaction is included. Finality determines when the network considers that transaction permanently settled.
Why blockchain finality matters
Many blockchain applications need more than evidence that a transaction has appeared in a block.
They need confidence that the transaction is irreversible before they:
- Confirm a payment
- Recognise a swap
- Release an asset
- Complete a bridge transaction
- Update an application
- Verify an on-chain quest
- Record campaign progress
- Unlock access or digital content
The faster a blockchain reaches finality, the sooner an application can safely act on the transaction.
Telos now provides that protocol-level certainty in approximately one second.
The time visible to an end user can still depend on the application, RPC provider, indexer and confirmation policy being used. Integrations must therefore update their systems to take advantage of Savanna finality.
What Telos Instant Finality means for Web3 quests
Direct answer: Faster finality gives Web3 quest platforms a quicker, stronger signal that eligible public on-chain activity has settled.
Web3 quests often ask participants to complete a verifiable on-chain action.
This might include:
- Connecting and using a wallet
- Completing a transaction
- Making an eligible swap
- Holding a particular digital asset
- Interacting with a smart contract
- Claiming an NFT
- Using an application built on Telos
- Reaching a defined on-chain milestone
A Web3 quest platform must then determine whether the required public blockchain activity has taken place.
Faster finality gives quest platforms a quicker and stronger signal that an eligible transaction is complete and irreversible. This can reduce the delay between completing an on-chain action and having that action recognised by the surrounding application.
It also helps prevent progression systems from acting on transactions that have appeared but have not yet reached final settlement.
How Afyniti uses on-chain quests
Direct answer: Afyniti checks eligible existing public on-chain activity when that activity is part of a defined campaign quest.
Afyniti, a narrative-led Web3 quest platform, helps blockchain ecosystems, applications and communities turn user activity into structured campaigns.
Campaigns can combine:
- Educational quests
- Community and social actions
- Wallet-aware activity
- On-chain transaction verification
- Progressive chapters
- XP and platform progression
- Digital equipment and unlocks
- Campaign analytics
On-chain quests are designed to verify activity that a user has already completed. Afyniti checks eligible existing public on-chain activity, and Afyniti does not execute, arrange, or recommend transactions on a user’s behalf.
When an Afyniti campaign includes eligible Telos activity, the platform can check public on-chain data to determine whether the defined quest conditions have been satisfied.
Telos Instant Finality strengthens the infrastructure beneath this experience by allowing qualifying transactions to become irreversible much sooner.
For more context on the ecosystem, read Afyniti’s beginner-friendly Telos network guide. For the product flow, the homepage explains how Afyniti turns campaigns into story-driven quest paths. Projects evaluating campaign launches can start from the Afyniti partner campaign page.
Faster finality can improve quest campaign experiences
A good quest campaign should make progression feel clear and responsive.
Long or uncertain verification periods can create friction. A participant completes an action but may not know whether it has been detected, whether it is still processing or whether something has gone wrong.
One-second protocol finality can support better Web3 quest experiences through:
Faster confirmation
Eligible on-chain activity can reach irreversible status much sooner.
Clearer progression
Applications can provide participants with greater certainty that an action has been permanently recorded.
More responsive campaigns
Campaigns involving sequential on-chain actions can move participants through the experience with less waiting at the settlement layer.
Stronger verification
Quest platforms can distinguish between a transaction appearing on-chain and reaching irreversible finality.
Better experiences at scale
Faster settlement can help wallets, games, campaign platforms, exchanges and other integrations coordinate around a clear final state.
Important qualification: Application-level recognition may still take longer than one second depending on indexing, RPC performance and the platform's own verification process.
How Savanna consensus works
Direct answer: Savanna separates block production from transaction finalization and uses finalizer votes to establish irreversible state.
Savanna separates block production from transaction finalization inside the Telos node software.
Telos block producers continue signing scheduled blocks using their block-production keys. These network operators also participate as finalizers using separately generated and registered BLS cryptographic keys.
The resulting finalizer votes form quorum certificates. These certificates provide protocol-level evidence that the required finalizers have agreed on the irreversible state of the blockchain.
The active Telos policy consists of:
- 21 equal-weight finalizers
- A finality threshold of 15
- Separately registered BLS finalizer keys
- On-chain proof of possession for each key
Telos documentation describes block production and finalizer voting as two coordinated roles within Savanna consensus.
The successful Telos mainnet transition
The transition to Savanna was executed through the switchtosvnn multisig proposal at block 480,286,656.
Following the transition, verification was performed across two complete block-producer cycles.
According to the Telos launch report:
- All 21 block producers produced exactly 24 blocks
- No missed slots were detected
- No timestamp gaps were detected
- Native RPC endpoints remained synchronized
- Telos EVM RPC continued operating normally
- The last irreversible block continued following the head by two blocks
Instant Finality is therefore live on Telos mainnet, rather than remaining a planned network feature.
What developers and integrations need to do
Direct answer: Developers should review confirmation policies so integrations can recognise Savanna finality instead of waiting on legacy assumptions.
Telos applications will not necessarily benefit from Instant Finality automatically.
Developers, exchanges, indexers, bridges, quest platforms and infrastructure providers should review their existing confirmation policies.
An integration that continues waiting for a fixed number of legacy confirmations could still introduce an unnecessary delay, even though the underlying transaction has already become irreversible.
Developers can inspect the live finality state through native Telos RPC methods, including:
/v1/chain/get_info/v1/chain/get_finalizer_info
These endpoints can show the relationship between the head block and last irreversible block, as well as information about active finalizers, thresholds and tracked votes.
Instant Finality and the Telos roadmap
Instant Finality is the second milestone in Project Lightspeed, Telos’ coordinated infrastructure upgrade programme.
The roadmap consists of three principal stages:
- TelosZero Core: The Telos-maintained foundation for the network’s node software.
- Instant Finality: One-second transaction irreversibility through Savanna consensus.
- TelosEVM 3.0: The next stage of Telos EVM infrastructure, powered by telos-reth v2.
Savanna does not make zero-knowledge proofs generate faster. Instead, it reduces the finality wait surrounding actions such as proof submissions, deposits and withdrawals.
Building more responsive Web3 experiences on Telos
Telos Instant Finality gives developers and applications a much faster signal that an on-chain action is permanently settled.
For Web3 quest platforms, this matters because user progression can be connected to verified blockchain activity with less settlement delay.
For ecosystems using Afyniti, the combination creates an opportunity to build Telos quest campaigns that help users:
- Learn about the Telos ecosystem
- Discover Telos applications
- Complete educational activities
- Explore wallet functionality
- Verify eligible public on-chain actions
- Progress through connected campaign chapters
The result is more than a faster transaction. It is a stronger foundation for responsive, verifiable on-chain experiences.
For practical user setup, see the Telos wallet guide for EVM, Zero and ZK wallet options.
Frequently asked questions
What is Telos Instant Finality?
Telos Instant Finality is a Savanna consensus feature that allows transactions to become irreversible after two blocks, or approximately one second.
How fast are transactions on Telos?
Telos produces blocks every 0.5 seconds. Following the Savanna upgrade, a transaction can reach irreversible finality after two blocks.
What is the difference between block time and finality?
Block time measures how quickly new blocks are produced. Finality measures when a transaction becomes irreversible and can be treated as permanently settled.
What are Web3 quests?
Web3 quests are structured activities that help users learn about, explore or interact with a blockchain ecosystem. They may include educational, community, social and verifiable on-chain actions.
Can Afyniti verify Telos transactions?
Afyniti can check eligible public on-chain activity when it forms part of a defined campaign quest. Afyniti verifies existing activity and does not execute or arrange transactions for users.
Does Instant Finality make Afyniti quests complete in one second?
Not necessarily. The underlying Telos transaction can reach protocol finality in approximately one second, but recognition within an application can also depend on RPC performance, indexing and the platform’s verification process.
How can a Telos project launch a Web3 quest campaign?
Telos projects can work with Afyniti to design narrative-led campaigns combining education, community engagement, wallet-aware actions and eligible on-chain quest verification.
Explore Telos through Afyniti
Discover Telos campaigns, complete quests and follow your progression through Afyniti.