# c8ntinuum Docs > Developer documentation for c8ntinuum — a universal interoperability solution with a forward-compatible EVM layer. ## Docs - [Overview](https://docs.c8ntinuum.com/introduction/overview): c8ntinuum is a universal interoperability solution with a forward-compatible EVM layer, built with trust minimization at its core. - [Why c8ntinuum](https://docs.c8ntinuum.com/introduction/why-continuum): Trust-minimized interoperability, forward-compatible EVM, and cryptographic expressiveness in a single chain. - [c8ntinuum for Users](https://docs.c8ntinuum.com/introduction/for-users): What to expect as a user on c8ntinuum — familiar wallets, fast transactions, and cross-chain access. - [c8ntinuum for Developers](https://docs.c8ntinuum.com/introduction/for-developers): Developer overview — Ethereum compatibility, unique precompiles, and what's different. - [Developer Essentials](https://docs.c8ntinuum.com/developer-essentials): Core network, deployment, gas, compatibility, and operational facts for building on c8ntinuum. - [Network Information - Mainnet](https://docs.c8ntinuum.com/developer-essentials/network-information/mainnet): Mainnet RPC endpoints, chain ID, explorer, currency, and canonical contracts for c8ntinuum. - [Network Information - Testnet](https://docs.c8ntinuum.com/developer-essentials/network-information/testnet): Testnet RPC endpoints, chain ID, explorer, currency, and operational status for c8ntinuum. - [Deployment Summary](https://docs.c8ntinuum.com/developer-essentials/deployment-summary): Quick reference for deploying contracts to c8ntinuum. - [Differences from Ethereum](https://docs.c8ntinuum.com/developer-essentials/differences-from-ethereum): Key differences between c8ntinuum and Ethereum for developers. - [Gas on c8ntinuum](https://docs.c8ntinuum.com/developer-essentials/gas): Gas pricing, EIP-1559 fee market, and key gas mechanics. - [Opcode Pricing](https://docs.c8ntinuum.com/developer-essentials/opcode-pricing): Where to find opcode and precompile cost behavior for c8ntinuum applications. - [Precompiles](https://docs.c8ntinuum.com/developer-essentials/precompiles): Builder-focused overview of c8ntinuum's native precompile surfaces. - [Historical Data](https://docs.c8ntinuum.com/developer-essentials/historical-data): How to approach historical reads, logs, indexing, and archive data on c8ntinuum. - [Best Practices](https://docs.c8ntinuum.com/developer-essentials/best-practices): Tips for building high-performance applications on c8ntinuum. - [Changelog](https://docs.c8ntinuum.com/developer-essentials/changelog): Protocol, network, and documentation changes that affect c8ntinuum developers. - [Tooling and Infrastructure](https://docs.c8ntinuum.com/tooling-and-infrastructure): RPC providers, explorers, wallets, indexers, oracles, IBC tooling, and development toolkits for c8ntinuum. - [RPC Providers](https://docs.c8ntinuum.com/tooling-and-infrastructure/rpc-providers): RPC endpoints and providers for c8ntinuum. - [Block Explorers](https://docs.c8ntinuum.com/tooling-and-infrastructure/block-explorers): Block explorers for browsing transactions, contracts, and accounts on c8ntinuum. - [Wallets](https://docs.c8ntinuum.com/tooling-and-infrastructure/wallets): Wallet support, network metadata, WalletConnect configuration, token imports, and address UX for c8ntinuum. - [Indexers](https://docs.c8ntinuum.com/tooling-and-infrastructure/indexers): Data indexing and querying services for c8ntinuum. - [Oracles](https://docs.c8ntinuum.com/tooling-and-infrastructure/oracles): Oracle providers for bringing off-chain data to c8ntinuum smart contracts. - [IBC Interoperability](https://docs.c8ntinuum.com/tooling-and-infrastructure/cross-chain): IBC interoperability and safety controls for c8ntinuum. - [Development Toolkits](https://docs.c8ntinuum.com/tooling-and-infrastructure/dev-toolkits): Foundry, Hardhat, and other development frameworks for building on c8ntinuum. - [Local Development](https://docs.c8ntinuum.com/tooling-and-infrastructure/local-development): Run a local c8ntinuum single-node chain with local_node.sh. - [Reference](https://docs.c8ntinuum.com/reference): API and protocol reference material for c8ntinuum builders. - [Deployment Scripts](https://docs.c8ntinuum.com/reference/deployment-scripts): Canonical hosted deployment scripts and peer-list resources referenced by c8ntinuum docs. - [JSON-RPC API](https://docs.c8ntinuum.com/rpc-reference/json-rpc-api): c8ntinuum supports the standard Ethereum JSON-RPC API. - [Node Interface Calls](https://docs.c8ntinuum.com/rpc-reference/node-interface-calls): Block, transaction, receipt, log, CometBFT, and REST calls for integrators. - [RPC Differences](https://docs.c8ntinuum.com/rpc-reference/rpc-differences): How c8ntinuum's JSON-RPC behavior differs from standard Ethereum. - [Error Codes](https://docs.c8ntinuum.com/rpc-reference/error-codes): JSON-RPC error codes returned by c8ntinuum nodes. - [Precompile ABI Reference](https://docs.c8ntinuum.com/reference/precompile-abi): Source-backed addresses, ABI artifacts, import guidance, methods, events, reverts, and gas behavior for c8ntinuum precompiles. - [Guides](https://docs.c8ntinuum.com/guides): Step-by-step guides for wallets, deployments, verification, and common c8ntinuum workflows. - [Wallet Setup](https://docs.c8ntinuum.com/guides/wallet-setup): Add c8ntinuum to MetaMask and other EVM wallets. - [Add c8ntinuum Mainnet to Wallet](https://docs.c8ntinuum.com/guides/wallet-setup/mainnet): Add c8ntinuum mainnet to MetaMask or another EVM-compatible wallet. - [Add c8ntinuum Testnet to Wallet](https://docs.c8ntinuum.com/guides/wallet-setup/testnets): Add c8ntinuum testnet networks to EVM-compatible wallets. - [Exchange and Custody Integration](https://docs.c8ntinuum.com/guides/exchange-integration): Operational integration entry point for exchanges, custodians, wallets, and indexers. - [Tested Exchange Examples](https://docs.c8ntinuum.com/guides/exchange-integration/tested-examples): Compile-tested JavaScript and Java samples for c8ntinuum exchange integration. - [Address Generation and Validation](https://docs.c8ntinuum.com/guides/exchange-integration/address-generation-and-validation): Generate keys, derive c8ntinuum addresses, validate address legality, and understand activation behavior. - [Deposit Processing](https://docs.c8ntinuum.com/guides/exchange-integration/deposit-processing): Synchronize blocks and analyze successful native CTM and token transfers. - [Offline Signing and Broadcasting](https://docs.c8ntinuum.com/guides/exchange-integration/offline-signing-and-broadcasting): Construct transactions, sign offline, analyze signed data, and broadcast c8ntinuum transactions. - [Deploy with Foundry](https://docs.c8ntinuum.com/guides/deploy-contract/foundry): Step-by-step guide to deploying a smart contract on c8ntinuum using Foundry. - [Deploy with Hardhat](https://docs.c8ntinuum.com/guides/deploy-contract/hardhat): Step-by-step guide to deploying a smart contract on c8ntinuum using Hardhat. - [Deploy with Remix](https://docs.c8ntinuum.com/guides/deploy-contract/remix): Deploy a smart contract on c8ntinuum using the Remix IDE in your browser. - [Verify with Foundry](https://docs.c8ntinuum.com/guides/verify-contract/foundry): Verify a deployed smart contract on CTMScan using Foundry. - [Verify with Hardhat](https://docs.c8ntinuum.com/guides/verify-contract/hardhat): Verify a deployed smart contract on CTMScan using Hardhat. - [FAQ](https://docs.c8ntinuum.com/faq): Frequently asked questions about c8ntinuum. - [Brand Kit](https://docs.c8ntinuum.com/brand-kit): Official c8ntinuum brand assets, naming guidance, usage rules, and press resources for partners and media. - [Official Links](https://docs.c8ntinuum.com/official-links): Official c8ntinuum resources, channels, metadata, and documentation. - [Learn](https://docs.c8ntinuum.com/learn): Architecture, concepts, execution, interoperability, and transaction lifecycle material for c8ntinuum. - [Accounts](https://docs.c8ntinuum.com/core-concepts/accounts): Dual address system, HD derivation, and account types on c8ntinuum. - [Tokens](https://docs.c8ntinuum.com/core-concepts/tokens): Native token, denomination, and ERC-20 compatibility on c8ntinuum. - [Transactions](https://docs.c8ntinuum.com/core-concepts/transactions): Transaction types, lifecycle, and ordering on c8ntinuum. - [IBC](https://docs.c8ntinuum.com/core-concepts/ibc): Inter-Blockchain Communication on c8ntinuum — trust-minimized cross-chain messaging. - [EVM Compatibility](https://docs.c8ntinuum.com/core-concepts/evm-compatibility): What works, what's different, and what's enhanced on c8ntinuum compared to Ethereum. - [Chain Architecture](https://docs.c8ntinuum.com/learn/chain-architecture): A high-level model of c8ntinuum's EVM, Cosmos, precompile, and interoperability layers. - [Consensus](https://docs.c8ntinuum.com/learn/consensus): How to think about c8ntinuum finality, validator agreement, and confirmation policy. - [Execution and EVM](https://docs.c8ntinuum.com/learn/execution-evm): How c8ntinuum combines standard EVM execution with native chain capabilities. - [Interoperability and IBC](https://docs.c8ntinuum.com/learn/interoperability): Trust-minimized cross-chain communication on c8ntinuum. - [Modules & Precompiles](https://docs.c8ntinuum.com/modules/overview): c8ntinuum's precompiles are natively executed system interfaces exposed at fixed addresses, organized into five families. - [Cross-chain Verification](https://docs.c8ntinuum.com/modules/cross-chain-verification): IBC, light-client verification, Solana transaction parsing, and zkVM proof verification precompile families. - [Cryptographic Verification](https://docs.c8ntinuum.com/modules/cryptographic-verification): Signature, threshold signature, verifiable randomness, and post-quantum verification precompile families. - [Hashing](https://docs.c8ntinuum.com/modules/hashing): Native hashing precompiles for SHA-3, BLAKE2b, Poseidon, and gnark-aligned hash utilities. - [Data Ergonomics](https://docs.c8ntinuum.com/modules/data-ergonomics): JSON parsing and address-compression precompile families for multi-domain applications. - [Staking](https://docs.c8ntinuum.com/modules/cosmos/staking): Validator operations, delegation management, and staking functionality via precompile. - [Distribution](https://docs.c8ntinuum.com/modules/cosmos/distribution): Staking rewards accounting and withdrawal via precompile. - [Bank](https://docs.c8ntinuum.com/modules/cosmos/bank): Native asset accounting and ERC-20 style access to Cosmos SDK tokens. - [Governance](https://docs.c8ntinuum.com/modules/cosmos/governance): On-chain proposals, voting, and governance-driven automation via precompile. - [ICS20](https://docs.c8ntinuum.com/modules/cosmos/ics20): Cross-chain token transfers via IBC, accessible from Solidity. - [ERC20](https://docs.c8ntinuum.com/modules/cosmos/erc20): ERC-20 surface for native Cosmos tokens, enabling DeFi interoperability. - [WERC20](https://docs.c8ntinuum.com/modules/cosmos/werc20): Wrapped native token precompile — WETH-like pattern for c8ntinuum's native token. - [Slashing](https://docs.c8ntinuum.com/modules/cosmos/slashing): Validator slashing and jail management via precompile. - [Bech32](https://docs.c8ntinuum.com/modules/cosmos/bech32): Address format conversion between Ethereum hex and Cosmos Bech32 representations. - [Validator Rewards](https://docs.c8ntinuum.com/modules/custom/validator-rewards): x/valrewards epoch rewards, runtime settings, precompile surface, CLI, and governance controls. - [Minimum Self-Delegation Check](https://docs.c8ntinuum.com/modules/custom/minimum-self-delegation): x/msdcheck validator self-delegation floor across Cosmos and EVM entry points. - [Circuit Breaker](https://docs.c8ntinuum.com/modules/custom/circuit): x/circuit global system availability gate, whitelist, CLI, and enforcement scope. - [IBC Breaker](https://docs.c8ntinuum.com/modules/custom/ibc-breaker): x/ibcbreaker operator-controlled IBC availability gate and restricted message coverage. - [IBC Rate-Limiter Extension](https://docs.c8ntinuum.com/modules/custom/ibc-rate-limiter-extension): x/ibcratelimiterext governance-managed operator whitelist for IBC rate-limiter operations. - [Pre-deployed Contracts](https://docs.c8ntinuum.com/modules/predeployed-contracts): Ecosystem contracts deployed at well-known addresses at genesis, removing the bootstrap tax. - [Transaction Lifecycle](https://docs.c8ntinuum.com/learn/transaction-lifecycle): How transactions move through c8ntinuum from submission to finality. - [Node Operations](https://docs.c8ntinuum.com/node-ops): Runbooks for operating c8ntinuum full nodes, validators, state sync, upgrades, recovery, archive data, and events. - [Hardware Requirements](https://docs.c8ntinuum.com/node-ops/hardware-requirements): Minimum and recommended hardware guidance for c8ntinuum node operators. - [Build the Node](https://docs.c8ntinuum.com/node-ops/build-the-node): Build and install the c8ntinuum ctmd binary from source. - [Full Node Installation](https://docs.c8ntinuum.com/node-ops/full-node-installation): Install and initialize a c8ntinuum full node. - [State Sync](https://docs.c8ntinuum.com/node-ops/state-sync): Bootstrap a c8ntinuum node with state sync instead of replaying the full chain history. - [Validator Installation](https://docs.c8ntinuum.com/node-ops/validator-installation): Create, operate, monitor, and recover a c8ntinuum validator. - [General Operations](https://docs.c8ntinuum.com/node-ops/general-operations): Routine operational checks for c8ntinuum node operators. - [Upgrade Instructions](https://docs.c8ntinuum.com/node-ops/upgrade-instructions): Canonical runbook location for c8ntinuum node upgrades. - [Recovering a Node](https://docs.c8ntinuum.com/node-ops/node-recovery): Recovery paths for failed or unhealthy c8ntinuum nodes. - [Full Node Block Delivery](https://docs.c8ntinuum.com/node-ops/full-node-block-delivery): Operational guidance for block delivery, peer health, and node sync. - [Events and WebSockets](https://docs.c8ntinuum.com/node-ops/events-and-websockets): WebSocket and event surfaces for c8ntinuum operators and application infrastructure. - [Archive Data Setup](https://docs.c8ntinuum.com/node-ops/archive-data): Archive-node and historical-data setup guidance for c8ntinuum operators.