🍕
polkadot(js) book
  • Why Polkadot?
  • Polkadot js API
    • Typescript
  • 👩‍🚀Polkadot JS API Primer
    • 0. Setup
      • Polkadot JS API template
    • 1. Network Metadata
      • WebSockets
      • Configure WebSocket URL
      • Testnets and Westend network
    • 2. Account Creation and Cryptography
      • Public-key cryptography
      • Mnemonic seed phrase
      • API : create wallet account
    • 3. Wallets and Westend tokens
      • Mnemonic to create account
      • Claim Westend tokens
    • 4. Account Balance and Planck Unit
      • API to check account balance
      • Planck unit
      • Minimum account balance
        • API : check existential deposit
        • API : check account balance
  • 5. Extrinsics or Transactions
    • Transaction fees
      • API to check transaction fees
    • Transaction errors
      • API : General Exception Handling
      • API : Exception handling when account balance is low
    • API : transfer tokens from sender to receiver account
  • 6. Blocks in a chain
    • BlockHash
      • API : find blockHash of a transaction
    • Block structure of Polkadot
      • API : Polkadot block
      • API : Extrinsics
    • API : Transaction in a block
  • 🚀What next?
Powered by GitBook
On this page

6. Blocks in a chain

PreviousAPI : transfer tokens from sender to receiver accountNextBlockHash

Last updated 11 months ago

Blockchain and Blocks

A blockchain consists of a series of blocks. The blocks are linked together using cryptography, forming a secure and tamper-proof chain of records.

Each block in a blockchain contains a set of transactions or data and a reference to the previous block.

The world state represents the current status of the entire system, such as account balances and other information. The state is updated whenever a new block is added to the chain and the transactions within the block are processed. The state is stored in a data structure called a state trie, which is a type of Merkle tree.

Blocks contain a set of transactions or data.

When a new block is added to the chain, the transactions within the block are processed, which may result in changes to the state of the system.

Source

https://takenobu-hs.github.io/downloads/ethereum_evm_illustrated.pdf