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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
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5. Extrinsics or Transactions

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Last updated 2 years ago

Extrinsics (a.k.a. Types of Transactions)

Transactions are also known as extrinsics in the Polkadot ecosystem. There are three types of extrinsics .

  • Signed transactions: these must contain the signature of the account sending the transaction request, typically pays the transaction fee and must sign it using the account’s private key.

  • Unsigned transactions: these doesn’t require a signature and don’t carry any information about who submitted the transaction.

  • Inherents: are a special type of unsigned transaction made by block authors which carry information required to build a block such as timestamps, storage proofs and uncle blocks.

Learn more:

https://wiki.polkadot.network/docs/learn-extrinsics#extrinsics-aka-types-of-transactions