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›Developers

Welcome to Elrond

  • Welcome to Elrond

Technology

  • Architecture Overview
  • Glossary
  • Entities
  • Chronology
  • Secure Proof of Stake
  • Adaptive State Sharding
  • The Elrond WASM VM
  • Cross Shard Transactions

Wallet

  • Wallets - Overview
  • Web Wallet
  • Maiar Web Wallet Extension
  • Webhooks
  • Ledger

Tokens

  • Native Tokens
  • ESDT tokens
  • NFT tokens

Validators

  • Validators - Overview
  • System Requirements
  • Install a Mainnet Node

    • Scripts & User config
    • Installing a Validator Node
    • Optional Configurations
    • How to use the Docker Image

    Install a Testnet/Devnet Node

    • Scripts & User config
    • Installing a Validator Node
    • Manage a validator node
    • How to use the Docker Image

    Manage your keys

    • Validator Keys
    • Wallet Keys
    • Protecting your keys

    Staking, Unstaking, Unjailing

    • Staking, unstaking and unjailing
    • Staking
    • Unjailing
    • The Staking Smart Contract
  • The Delegation Manager
  • Convert An Existing Validator Into A Staking Pool
  • Merging A Validator Into An Existing Delegation Smart Contract
  • Rating
  • Elrond Node upgrades
  • Node redundancy
  • Import DB
  • Node CLI
  • Node Databases
  • Useful Links & Tools
  • FAQs

Developers

  • Developers - Overview
  • Tutorials

    • Build a dApp in 15 minutes
    • Build a Microservice for your dApp
    • The Crowdfunding Smart Contract (part 1)
    • The Crowdfunding Smart Contract (part 2)
    • The Counter Smart Contract
    • Custom Wallet Connect

    Signing Transactions

    • Signing Transactions
    • Tools for signing
    • Signing programmatically

    Gas and Fees

    • Overview
    • EGLD transfers (move balance transactions)
    • System Smart Contracts
    • User-defined Smart Contracts

    Developer reference

    • The Elrond Serialization Format
    • Smart contract annotations
    • Smart contract modules
    • Smart contract to smart contract calls
    • Smart Contract Developer Best Practices
    • Code Metadata
    • Smart Contract API Functions
    • Storage Mappers
    • Rust Testing Framework
    • Rust Testing Framework Functions Reference
    • Rust Smart Contract Debugging
    • Random Numbers in Smart Contracts

    Developers Best Practices

    • Basics
    • BigUint Operations
    • The dynamic allocation problem
    • Multi-values

    Mandos tests reference

    • Mandos Overview
    • Mandos Structure
    • Mandos Simple Values
    • Mandos Complex Values
    • Embedding Mandos code in Go
  • Constants
  • Built-In Functions
  • Account storage
  • Setup a Local Testnet
  • Set up a Local Testnet (advanced)
  • Creating Wallets

SDK and Tools

  • SDKs and Tools - Overview
  • REST API

    • REST API overview
    • api.elrond.com
    • Gateway overview
    • Addresses
    • Transactions
    • Network
    • Nodes
    • Blocks
    • Virtual Machine
    • Versions and Changelog
  • Proxy
  • Elasticsearch
  • erdpy

    • erdpy
    • Installing erdpy
    • Configuring erdpy
    • erdpy CLI
    • Deriving the Wallet PEM file
    • Sending bulk transactions
    • Writing and running erdpy scripts
    • Smart contract interactions

    erdjs

    • erdjs
    • Cookbook
    • Extending erdjs
    • Writing and testing interactions
    • Migration guides
    • Signing Providers for dApps
  • erdgo
  • erdcpp
  • erdjava
  • erdkotlin
  • erdwalletjs-cli

Integrators

  • Integrators - Overview
  • EGLD integration guide
  • ESDT tokens integration guide
  • Observing Squad
  • Accounts Management
  • Creating Transactions
  • Querying the Blockchain

Constants

Elrond uses some constants, which are specific to each chain (mainnet, testnet or devnet). The updated values can be found at these sources:

Mainnet:

  • https://gateway.elrond.com/network/config
  • https://github.com/ElrondNetwork/elrond-config-mainnet

Testnet:

  • https://testnet-gateway.elrond.com/network/config
  • https://github.com/ElrondNetwork/elrond-config-testnet

Devnet:

  • https://devnet-gateway.elrond.com/network/config
  • https://github.com/ElrondNetwork/elrond-config-devnet

At the time of writing, the most used constants values for mainnet were:

  • Round duration: 6 seconds
  • Epoch duration: 14400 rounds, 24 hours
  • Min gas price: 1000000000
  • Min gas limit: 50000
  • Chain ID: 1 (T for Testnet, D for Devnet)
  • Min deposit for the creation of a system delegation smart contract: 1250 EGLD
  • Min deposit for a validator: 2500 EGLD
  • Number of eligible validators per shard: 400 validators
  • Number of eligible validators per metachain: 400 validators
  • Max number of active (eligible + waiting) validators: 3200 validators
  • Consensus group size on shard: 63 validators
  • Consensus group size on metachain: 400 validators
  • Min deposit for staking provider: 1 EGLD
  • Min deposit for legacy delegation: 10 EGLD
  • Unbonding duration for legacy delegation: 144000 blocks
  • Unbonding duration for staking providers: 10 epochs
  • EGLD denomination: 18
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