Skip to content

Latest commit

 

History

History
34 lines (31 loc) · 1.75 KB

20230111123103-eutxo.org

File metadata and controls

34 lines (31 loc) · 1.75 KB

eutxo

Extended UTXO Ledger Model

UTXO model

transactions consume unspent outputs from previous transactions and produce new outputs which can be used as inputs to later transactions

Some Extentions to UTXO

Extension to facilitate smart contracts

Smart contracts are programs that perform automated and irrevocable transfer of funds on the block chain

EUTXO

An important feature of EUTXO is scripts. Scripts are program that run on block chain and check the validity of transactions.

Enhanced Scripting
  • every transaction has validity interval, interval [SlotNumber]
  • validator scripts make use of information about the pending transaction, validation contexts.
  • validation of an output is performed by running the vlaidator with three inputs:
    • datum
    • redeemer
    • context

    +

Transaction Identifier

transaction can be looked up using this unique txId

Input and outputs

a transaction has a set of Input and a List of outputs

Validator address in outputs

the address field of the output should contain the address of the validator script for that output.

Script and hashes

datum object and validators are provided as part of the transaction inputs, event thought they are conceptually part of the output being spent. The rational for this is:

  • the validator V for an output O is not required till O is actually spent.
  • cost of executing a transaction is based on the size of the transaction, including the associated scripts
  • therefor transaction that produces the validator, only pays for the size of the hash. And transaction that runs it pays for the full size of the script