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Flow Core Contracts

Flow Core Contracts is a collection of Cadence smart contracts that provide core protocol functions for the Flow blockchain, alongside reusable transaction templates and a Go template package.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Flow Core Contracts — OpenViST project profile in Smart Contracts.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when a Flow integration depends on protocol-level contracts or when researching how Flow handles functions such as staking, fees, scheduled transactions or random-beacon history.

Who it is for

  • Flow node operators reviewing protocol contracts
  • Builders integrating staking or delegation services
  • Protocol researchers examining Flow contract behavior
  • Cadence developers building integrations with Flow protocol contracts

Documented uses

  • Review the contract logic behind FLOW token, staking, delegation and epochs.
  • Find transaction examples for interacting with service-account, scheduler and other protocol contracts.
  • Use the repository’s protocol contracts and templates as references when building Flow integrations.
Before you choose

Requirements & limits

The repository is public and identifies the Unlicense as its license.

  • The contracts are written in Cadence, which the README describes as a resource-oriented language for Flow smart contracts.
  • The README recommends completing Cadence tutorials before reading the repository.
  • The repository lists contract addresses for Emulator, Testnet and Mainnet; confirm the relevant network and release when integrating.
  • This is source code and developer reference material, not a hosted user-facing staking or wallet service.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Find FlowToken contract addresses and transaction templates

Identify the documented FlowToken contract address for a network and locate its related transaction templates.

Before you start

  • Access to the flow-core-contracts repository README.

Steps

  1. Open the repository README.

  2. Find the FlowToken section and select the address listed for Emulator, Testnet, or Mainnet.

  3. Use the README’s link to the transactions/flowToken directory to review FlowToken transaction templates.

Expected outcome

You can identify the README-listed FlowToken address for a selected network and locate the related transaction templates.

Guide limitations

  • The README identifies addresses and template locations but does not provide steps for executing transactions.
  • No address is provided here for networks other than Emulator, Testnet, and Mainnet.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
9 October 2026
Original website title
onflow/flow-core-contracts · Official homepage title · retained in its source language
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