Overview

Fireblocks now supports Tempo, a new Layer 1 blockchain built by Stripe and Paradigm, focused on stablecoin payments. Tempo is designed for efficient stablecoin transactions with USD-denominated fees. It has a unique design where transaction fees are paid using the transferred token, instead of the standard model of paying transaction fees using the blockchain native asset.

We support:

• Tempo Testnet
• Tempo Mainnet

Key details

• Native token standard: TIP-20, compatible with ERC-20
• Mainnet explorer: https://explore.tempo.xyz
• Testnet explorer: https://explore.testnet.tempo.xyz
• Testnet faucet: https://docs.tempo.xyz/quickstart/faucet
• Transaction fees: For TIP-20 transfers, the transferred token is used to pay the fee
• EVM compatibility: full smart contract support

Assets on Fireblocks

Tempo

Asset ID: TEMPO

The Tempo asset is used only to indicate that a Tempo wallet exists, in alignment with EVM implementation standards. The Tempo value reflected in Fireblocks is a very large number, 100T. This value does not actually exist on-chain, but rather reflects the node’s response when querying the eth_getBalance endpoint, which returns an even larger number.

PathUSD

Asset ID: PATHUSD_TEMPO_54V8

PathUSD is a fallback gas token and is used for all blockchain operations, including:

• Minting
• Burning
• ERC-20 transfers
• Other non TIP-20 operations

Testnet assets

Tempo (Testnet) API Asset ID: TEMPO_MODERATO_TEST

PathUSD (Testnet) API Asset ID: PATHUSD_TEMPO_MODERATO_TEST_O46L

Fireblocks supports the following assets on Tempo Moderato Testnet. Use these IDs when testing in a non-production environment.

Supported functionality

Fireblocks supports these capabilities on Tempo:

• Custody: store TIP-20 tokens securely in your Fireblocks Vault with MPC-CMP protection
• Transfers: send and receive TIP-20 tokens with Policy Engine transaction controls
• Smart contracts: execute smart contract interactions with full audit trails
• Token management: add supported USD-denominated tokens to your workspace
• Gasless feature: Tempo is now available as part of our Gasless offering

Important limitations

Memo support

At this stage, memo fields are not supported. Incoming transactions that include memos will be processed to the destination address, but memo data will be ignored.

Transaction type 118

Tempo introduces a new EIP-2718 transaction type: 118. Fireblocks can parse incoming type 118 transactions. Outgoing transactions of this type are not currently supported. Configurable fee tokens — where a token other than the native asset or the transferred token pays the fee — are also not supported.

Network fee currency display

The network fee currency is displayed as Tempo, even in cases where the transaction fee was paid using a different token.

Token listing

• Only USD-denominated tokens can be added to your workspace
• Self-listing of new tokens is available only for TIP-20 tokens
• Enabling ERC-20 tokens requires opening a support ticket with the Fireblocks Support team.