<!--
Sitemap:
- [Tempo](/index): Explore Tempo's blockchain documentation, integration guides, and protocol specs. Build low-cost, high-throughput payment applications.
- [Changelog](/changelog)
- [Learn](/learn/): Explore stablecoin use cases and Tempo's payments-optimized blockchain architecture for remittances, payouts, and embedded finance.
- [Tempo Protocol](/protocol/): Technical specifications and reference documentation for the Tempo blockchain protocol, purpose-built for global payments at scale.
- [SDKs](/sdk/): Integrate Tempo into your applications with SDKs for TypeScript, Go, Rust, and Foundry. Build blockchain apps in your preferred language.
- [!Replace Me!](/guide/_template)
- [Building with AI](/guide/building-with-ai): Tempo documentation is built with AI-first principles, providing llms.txt files, Markdown rendering, and MCP server access for AI assistants.
- [Stablecoin Issuance](/guide/issuance/): Create and manage your own stablecoin on Tempo. Issue tokens, manage supply, and integrate with Tempo's payment infrastructure.
- [Tempo Node](/guide/node/): Run your own Tempo node for direct network access. Set up RPC nodes for API access or validator nodes to participate in consensus.
- [Stablecoin Payments](/guide/payments/): Send and receive stablecoin payments on Tempo. Integrate payments with flexible fee options, sponsorship capabilities, and parallel transactions.
- [Exchange Stablecoins](/guide/stablecoin-dex/): Trade between stablecoins on Tempo's enshrined DEX. Execute swaps, provide liquidity, and query the onchain orderbook for optimal pricing.
- [Use Tempo Transactions](/guide/tempo-transaction/): Learn how to use Tempo Transactions for configurable fee tokens, fee sponsorship, batch calls, access keys, and concurrent execution.
- [Create & Use Accounts](/guide/use-accounts/): Create and integrate Tempo accounts with domain-bound passkeys or connect to EVM-compatible wallets. Choose embedded or universal account experiences.
- [Partners](/learn/partners): Discover Tempo's ecosystem of stablecoin issuers, wallets, custody providers, compliance tools, and ramps ready for mainnet launch.
- [What are stablecoins?](/learn/stablecoins): Learn what stablecoins are, how they maintain value through reserves, and the payment use cases they enable for businesses globally.
- [Tempo](/learn/tempo/): Discover Tempo, the payments-first blockchain with instant settlement, predictably low fees, and native stablecoin support.
- [Exchanging Stablecoins](/protocol/exchange/): Tempo's enshrined decentralized exchange for trading between stablecoins with optimal pricing, limit orders, and flip orders for liquidity provision.
- [Transaction Fees](/protocol/fees/): Pay transaction fees in any USD stablecoin on Tempo. No native token required—fees are paid directly in TIP-20 stablecoins with automatic conversion.
- [Tempo Improvement Proposals (TIPs)](/protocol/tips/)
- [Tempo Transactions](/protocol/transactions/): Learn about Tempo Transactions, a new EIP-2718 transaction type with passkey support, fee sponsorship, batching, and concurrent execution.
- [Connect to the Network](/quickstart/connection-details): Connect to Tempo Testnet using browser wallets, CLI tools, or direct RPC endpoints. Get chain ID, URLs, and configuration details.
- [Developer Tools](/quickstart/developer-tools): Explore Tempo's developer ecosystem with indexers, embedded wallets, node infrastructure, and analytics partners for building payment apps.
- [EVM Differences](/quickstart/evm-compatibility): Learn how Tempo differs from Ethereum. Understand wallet behavior, fee token selection, VM layer changes, and fast finality consensus.
- [Faucet](/quickstart/faucet): Get free test stablecoins on Tempo Testnet. Connect your wallet or enter any address to receive pathUSD, AlphaUSD, BetaUSD, and ThetaUSD.
- [Integrate Tempo Testnet](/quickstart/integrate-tempo): Start building on Tempo Testnet. Connect to the network, explore SDKs, and follow guides for accounts, payments, and stablecoin issuance.
- [Predeployed Contracts](/quickstart/predeployed-contracts): Discover Tempo's predeployed system contracts including TIP-20 Factory, Fee Manager, Stablecoin DEX, and standard utilities like Multicall3.
- [Tempo Token List Registry](/quickstart/tokenlist)
- [Contract Verification](/quickstart/verify-contracts): Verify your smart contracts on Tempo using contracts.tempo.xyz. Sourcify-compatible verification with Foundry integration.
- [Wallet Integration Guide](/quickstart/wallet-developers): Integrate Tempo into your wallet. Handle fee tokens, configure gas display, and deliver enhanced stablecoin payment experiences for users.
- [Foundry for Tempo](/sdk/foundry/): Build, test, and deploy smart contracts on Tempo using the Foundry fork. Access protocol-level features with forge and cast tools.
- [Go](/sdk/go/): Build blockchain apps with the Tempo Go SDK. Send transactions, batch calls, and handle fee sponsorship with idiomatic Go code.
- [Rust](/sdk/rust/): Build blockchain apps with the Tempo Rust SDK using Alloy. Query chains, send transactions, and manage tokens with type-safe Rust code.
- [TypeScript SDKs](/sdk/typescript/): Build blockchain apps with Tempo using Viem and Wagmi. Send transactions, manage tokens, and integrate AMM pools with TypeScript.
- [Create a Stablecoin](/guide/issuance/create-a-stablecoin): Create your own stablecoin on Tempo using the TIP-20 token standard. Deploy tokens with built-in compliance features and role-based permissions.
- [Distribute Rewards](/guide/issuance/distribute-rewards): Distribute rewards to token holders using TIP-20's built-in reward mechanism. Allocate tokens proportionally based on holder balances.
- [Manage Your Stablecoin](/guide/issuance/manage-stablecoin): Configure stablecoin permissions, supply limits, and compliance policies. Grant roles, set transfer policies, and control pause/unpause functionality.
- [Mint Stablecoins](/guide/issuance/mint-stablecoins): Mint new tokens to increase your stablecoin's total supply. Grant the issuer role and create tokens with optional memos for tracking.
- [Use Your Stablecoin for Fees](/guide/issuance/use-for-fees): Enable users to pay transaction fees using your stablecoin. Add fee pool liquidity and integrate with Tempo's flexible fee payment system.
- [Installation](/guide/node/installation): Install Tempo node using pre-built binaries, build from source with Rust, or run with Docker. Get started in minutes with tempoup.
- [Network Upgrades and Releases](/guide/node/network-upgrades): Timeline and details for Tempo network upgrades and important releases for node operators.
- [Operate your validator node](/guide/node/operate-validator): Day-to-day operations for Tempo validators. Node lifecycle, upgrades, key rotation, monitoring, and troubleshooting.
- [Running an RPC Node](/guide/node/rpc): Set up and run a Tempo RPC node for API access. Download snapshots, configure systemd services, and monitor node health and sync status.
- [System Requirements](/guide/node/system-requirements): Minimum and recommended hardware specs for running Tempo RPC and validator nodes. CPU, RAM, storage, network, and port requirements.
- [Running a validator node](/guide/node/validator): Configure and run a Tempo validator node. Generate signing keys, participate in DKG ceremonies, and troubleshoot consensus issues.
- [Accept a Payment](/guide/payments/accept-a-payment): Accept stablecoin payments in your application. Verify transactions, listen for transfer events, and reconcile payments using memos.
- [Pay Fees in Any Stablecoin](/guide/payments/pay-fees-in-any-stablecoin): Configure users to pay transaction fees in any supported stablecoin. Eliminate the need for a separate gas token with Tempo's flexible fee system.
- [Send a Payment](/guide/payments/send-a-payment): Send stablecoin payments between accounts on Tempo. Include optional memos for reconciliation and tracking with TypeScript, Rust, or Solidity.
- [Send Parallel Transactions](/guide/payments/send-parallel-transactions): Submit multiple transactions concurrently using Tempo's expiring nonce system under-the-hood.
- [Sponsor User Fees](/guide/payments/sponsor-user-fees): Enable gasless transactions by sponsoring fees for your users. Set up a fee payer service and improve UX by removing friction from payment flows.
- [Attach a Transfer Memo](/guide/payments/transfer-memos)
- [Executing Swaps](/guide/stablecoin-dex/executing-swaps): Learn to execute instant stablecoin swaps on Tempo's DEX. Get price quotes, set slippage protection, and batch approvals with swaps.
- [Managing Fee Liquidity](/guide/stablecoin-dex/managing-fee-liquidity): Add and remove liquidity in the Fee AMM to enable stablecoin fee conversions. Monitor pools, check LP balances, and rebalance reserves.
- [Providing Liquidity](/guide/stablecoin-dex/providing-liquidity): Place limit and flip orders to provide liquidity on the Stablecoin DEX orderbook. Learn to manage orders and set prices using ticks.
- [View the Orderbook](/guide/stablecoin-dex/view-the-orderbook): Inspect Tempo's onchain orderbook using SQL queries. View spreads, order depth, individual orders, and recent trade prices with indexed data.
- [Add Funds to Your Balance](/guide/use-accounts/add-funds): Get test stablecoins on Tempo testnet using the faucet. Request pathUSD, AlphaUSD, BetaUSD, and ThetaUSD tokens for development and testing.
- [Batch Transactions](/guide/use-accounts/batch-transactions)
- [Connect to Wallets](/guide/use-accounts/connect-to-wallets): Connect your application to EVM-compatible wallets like MetaMask on Tempo. Set up Wagmi connectors and add the Tempo network to user wallets.
- [Embed Passkey Accounts](/guide/use-accounts/embed-passkeys): Create domain-bound passkey accounts on Tempo using WebAuthn for secure, passwordless authentication with biometrics like Face ID and Touch ID.
- [Scheduled Transactions](/guide/use-accounts/scheduled-transactions)
- [WebAuthn & P256 Signatures](/guide/use-accounts/webauthn-p256-signatures)
- [Onchain FX](/learn/tempo/fx): Access foreign exchange liquidity directly onchain with regulated non-USD stablecoin issuers and multi-currency fee payments on Tempo.
- [Tempo Transactions](/learn/tempo/modern-transactions): Native support for gas sponsorship, batch transactions, scheduled payments, and passkey authentication built into Tempo's protocol.
- [TIP-20 Tokens](/learn/tempo/native-stablecoins): Tempo's stablecoin token standard with payment lanes, stable fees, reconciliation memos, and built-in compliance for regulated issuers.
- [Performance](/learn/tempo/performance): High throughput and sub-second finality built on Reth SDK and Simplex Consensus for payment applications requiring instant settlement.
- [Privacy](/learn/tempo/privacy): Explore Tempo's opt-in privacy features enabling private balances and confidential transfers while maintaining issuer compliance.
- [Power AI agents with programmable money](/learn/use-cases/agentic-commerce): Power autonomous AI agents with programmable stablecoin payments for goods, services, and digital resources in real time.
- [Bring embedded finance to life with stablecoins](/learn/use-cases/embedded-finance): Enable platforms and marketplaces to streamline partner payouts, lower payment costs, and launch rewarding loyalty programs.
- [Send global payouts instantly](/learn/use-cases/global-payouts): Deliver instant, low-cost payouts to contractors, merchants, and partners worldwide with stablecoins, bypassing slow banking rails.
- [Enable true pay-per-use pricing](/learn/use-cases/microtransactions): Enable true pay-per-use pricing with sub-cent payments for APIs, content, IoT services, and machine-to-machine commerce.
- [Stablecoins for Payroll](/learn/use-cases/payroll): Faster payroll funding, cheaper cross-border payouts, and new revenue streams for payroll providers using stablecoins.
- [Send money home faster and cheaper](/learn/use-cases/remittances): Send cross-border payments faster and cheaper with stablecoins, eliminating correspondent banks and reducing transfer costs.
- [Move treasury liquidity instantly across borders](/learn/use-cases/tokenized-deposits): Move treasury liquidity instantly across borders with real-time visibility into global cash positions using tokenized deposits.
- [Consensus and Finality](/protocol/blockspace/consensus): Tempo uses Simplex BFT via Commonware for deterministic sub-second finality with Byzantine fault tolerance.
- [Blockspace Overview](/protocol/blockspace/overview): Technical specification for Tempo block structure including header fields, payment lanes, subblocks, and system transaction ordering.
- [Payment Lane Specification](/protocol/blockspace/payment-lane-specification): Technical specification for Tempo payment lanes ensuring dedicated blockspace for payment transactions with predictable fees during congestion.
- [Sub-block Specification](/protocol/blockspace/sub-block-specification): Technical specification for subblocks enabling non-proposing validators to include transactions in every block with guaranteed blockspace access.
- [DEX Balance](/protocol/exchange/exchange-balance): Hold token balances directly on the Stablecoin DEX to save gas costs on trades, receive maker proceeds automatically, and trade more efficiently.
- [Executing Swaps](/protocol/exchange/executing-swaps): Learn how to execute swaps and quote prices on Tempo's Stablecoin DEX with exact-in and exact-out swap functions and slippage protection.
- [Providing Liquidity](/protocol/exchange/providing-liquidity): Provide liquidity on Tempo's DEX using limit orders and flip orders. Earn spreads while facilitating stablecoin trades with price-time priority.
- [Quote Tokens](/protocol/exchange/quote-tokens): Quote tokens determine trading pairs on Tempo's DEX. Each TIP-20 specifies a quote token, with pathUSD available as an optional neutral choice.
- [Stablecoin DEX](/protocol/exchange/spec): Technical specification for Tempo's enshrined DEX with price-time priority orderbook, flip orders, and multi-hop routing for stablecoin trading.
- [Fee AMM Overview](/protocol/fees/fee-amm/): Understand how the Fee AMM automatically converts transaction fees between stablecoins, enabling users to pay in any supported token.
- [Fee Specification](/protocol/fees/spec-fee): Technical specification for Tempo's fee system covering multi-token fee payment, fee sponsorship, token preferences, and validator payouts.
- [Fee AMM Specification](/protocol/fees/spec-fee-amm): Technical specification for the Fee AMM enabling automatic stablecoin conversion for transaction fees with fixed-rate swaps and MEV protection.
- [TIP-20 Rewards](/protocol/tip20-rewards/overview): Built-in reward distribution mechanism for TIP-20 tokens enabling efficient, opt-in proportional rewards to token holders at scale.
- [TIP-20 Rewards Distribution](/protocol/tip20-rewards/spec): Technical specification for the TIP-20 reward distribution system using reward-per-token accumulator pattern for scalable pro-rata rewards.
- [TIP-20 Token Standard](/protocol/tip20/overview): TIP-20 is Tempo's native token standard for stablecoins with built-in fee payment, payment lanes, transfer memos, and compliance policies.
- [TIP20](/protocol/tip20/spec): Technical specification for TIP-20, the optimized token standard extending ERC-20 with memos, rewards distribution, and policy integration.
- [TIP-403 Policy Registry](/protocol/tip403/overview): Learn how TIP-403 enables TIP-20 tokens to enforce access control through a shared policy registry with whitelist and blacklist support.
- [Overview](/protocol/tip403/spec): Technical specification for TIP-403, the policy registry system enabling whitelist and blacklist access control for TIP-20 tokens on Tempo.
- [TIP Title](/protocol/tips/_tip_template): Short description for SEO
- [State Creation Cost Increase](/protocol/tips/tip-1000): Increased gas costs for state creation operations to protect Tempo from adversarial state growth attacks.
- [Place-only mode for next quote token](/protocol/tips/tip-1001): A new DEX function for creating trading pairs against a token's staged next quote token, to allow orders to be placed on it.
- [Prevent crossed orders and allow same-tick flip orders](/protocol/tips/tip-1002): Changes to the Stablecoin DEX that prevent placing orders that would cross existing orders on the opposite side of the book, and allow flip orders to flip to the same tick.
- [Client order IDs](/protocol/tips/tip-1003): Addition of client order IDs to the Stablecoin DEX, allowing users to specify their own order identifiers for idempotency and easier order tracking.
- [Permit for TIP-20](/protocol/tips/tip-1004): Addition of EIP-2612 permit functionality to TIP-20 tokens, enabling gasless approvals via off-chain signatures.
- [Fix ask swap rounding loss](/protocol/tips/tip-1005): A fix for a rounding bug in the Stablecoin DEX where partial fills on ask orders can cause small amounts of quote tokens to be lost.
- [Burn At for TIP-20 Tokens](/protocol/tips/tip-1006): The burnAt function for TIP-20 tokens, enabling authorized administrators to burn tokens from any address.
- [Fee Token Introspection](/protocol/tips/tip-1007): Addition of fee token introspection functionality to the FeeManager precompile, enabling smart contracts to query the fee token being used for the current transaction.
- [Expiring Nonces](/protocol/tips/tip-1009): Time-bounded replay protection using transaction hashes instead of sequential nonce management.
- [Mainnet Gas Parameters](/protocol/tips/tip-1010): Initial gas parameters for Tempo mainnet launch including base fee pricing, payment lane capacity, and transaction gas limits.
- [Enhanced Access Key Permissions](/protocol/tips/tip-1011): Extends Access Keys with periodic spending limits and destination address scoping for subscription-based and restricted access patterns.
- [Compound Transfer Policies](/protocol/tips/tip-1015): Extends TIP-403 with compound policies that specify different authorization rules for senders and recipients.
- [Exempt Storage Creation from Gas Limits](/protocol/tips/tip-1016): Storage creation gas costs are charged but don't count against transaction or block gas limits, enabling higher contract code pricing and better throughput for new account operations.
- [ValidatorConfig V2](/protocol/tips/tip-1017): Second-generation validator configuration precompile with append-only semantics for historical validator set reconstruction.
- [Account Keychain Precompile](/protocol/transactions/AccountKeychain): Technical specification for the Account Keychain precompile managing access keys with expiry timestamps and per-token spending limits.
- [EIP-4337 Comparison](/protocol/transactions/eip-4337): How Tempo Transactions achieve EIP-4337 goals without bundlers, paymasters, or EntryPoint contracts.
- [EIP-7702 Comparison](/protocol/transactions/eip-7702): How Tempo Transactions extend EIP-7702 delegation with additional signature schemes and native features.
- [Tempo Transaction](/protocol/transactions/spec-tempo-transaction): Technical specification for the Tempo transaction type (EIP-2718) with WebAuthn signatures, parallelizable nonces, gas sponsorship, and batching.
- [Setup](/sdk/typescript/prool/setup): Set up infinite pooled Tempo node instances in TypeScript with Prool for testing and local development of blockchain applications.
- [Handler.compose](/sdk/typescript/server/handler.compose): Combine multiple Tempo server handlers into a single endpoint. Run fee payer and key manager services together from one server.
- [Handler.feePayer](/sdk/typescript/server/handler.feePayer): Create a server handler to subsidize gas costs for users. Sign transactions with a dedicated fee payer account on your backend.
- [Handler.keyManager](/sdk/typescript/server/handler.keyManager): Create a server handler to manage WebAuthn credential public keys. Enable passkey authentication for users across multiple devices.
- [Overview](/sdk/typescript/server/handlers): Framework-agnostic server handlers for Tempo protocol operations. Works with Node.js, Bun, Deno, Express, Hono, and Next.js.
-->

# Network Upgrades and Releases

Tempo uses scheduled network upgrades to introduce protocol changes. Each upgrade goes through testnet activation before mainnet. This page also tracks important releases that node operators should be aware of.

For detailed release notes and binaries, see the [Changelog](/changelog).

## Required Node Operator Updates

| Release | Date | Network | Description | Priority |
|---------|------|---------|-------------|----------|
| [v1.4.0](https://github.com/tempoxyz/tempo/releases/tag/v1.4.0) | Mar 5, 2026 | Moderato + Mainnet | Required for T1C; introduces keychain signature migration so only V2 signatures and hashes are accepted after activation | <Badge variant="red">Required</Badge> |
| [v1.3.1](https://github.com/tempoxyz/tempo/releases/tag/v1.3.1) | Feb 22, 2026 | Testnet + Mainnet | Fixes high-load issues and finalizes T1A/T1B hardening for expiring nonce replay protection and keychain precompile gas handling | <Badge variant="red">Required</Badge> |
| [v1.2.0](https://github.com/tempoxyz/tempo/releases/tag/v1.2.0) | Feb 13, 2026 | Mainnet only | Fixes validation bug rejecting transactions with gas limits above ~16.7M, blocking large contract deployments | <Badge variant="red">Required</Badge> |

***

## T1C

| | |
|---|---|
| **Scope** | Security hardening, includes breaking change on keychain signatures |
| **Release** | [v1.4.0](https://github.com/tempoxyz/tempo/releases/tag/v1.4.0) |
| **Testnet** | Moderato: Mar 9, 2026 15:00 UTC (unix: 1773068400) |
| **Mainnet** | Mar 12, 2026 15:00 UTC (unix: 1773327600) |
| **Priority** | <Badge variant="red">Required</Badge> |

***

## T1A / T1B

| | |
|---|---|
| **Scope** | T1A removes the 16.7M per-transaction gas limit in favor of Tempo's 30M cap; T1B adds keychain precompile gas metering and expiring nonce replay-protection hardening |
| **TIPs** | T1A: [TIP-1010: Mainnet Gas Parameters](https://docs.tempo.xyz/protocol/tips/tip-1010); T1B: upgrade hardening release |
| **Release** | [v1.3.1](https://github.com/tempoxyz/tempo/releases/tag/v1.3.1) |
| **Testnet** | T1A + T1B: Feb 23, 2026 15:00 UTC (unix: 1771858800) |
| **Mainnet** | T1A: Feb 12, 2026 15:00 UTC (unix: 1770908400); T1B: Feb 23, 2026 15:00 UTC (unix: 1771858800) |
| **Priority** | <Badge variant="red">Required</Badge> |

***

## T1 (Bach)

| | |
|---|---|
| **Scope** | Mainnet-ready gas economics, expiring nonces, and security hardening |
| **TIPs** | [TIP-1000: State Creation Cost Increase](https://docs.tempo.xyz/protocol/tips/tip-1000), [TIP-1009: Expiring Nonces](https://docs.tempo.xyz/protocol/tips/tip-1009), [TIP-1010: Mainnet Gas Parameters](https://docs.tempo.xyz/protocol/tips/tip-1010) |
| **Testnet** | Feb 5, 2026 15:00 UTC (unix: 1770303600) — Release: [v1.1.0](https://github.com/tempoxyz/tempo/releases/tag/v1.1.0) |
| **Mainnet** | Feb 12, 2026 15:00 UTC (unix: 1770908400) — Release: [v1.1.1](https://github.com/tempoxyz/tempo/releases/tag/v1.1.1) |
| **Priority** | <Badge variant="red">Required</Badge> |

***

## T0 (Genesis)

| | |
|---|---|
| **Scope** | Initial mainnet launch |
| **Mainnet** | Jan 16, 2026 (genesis) — Release: [v1.0.0](https://github.com/tempoxyz/tempo/releases/tag/v1.0.0) |
| **Priority** | <Badge variant="red">Required</Badge> |