Cardano
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ADA · 3d

Do you know what is included in Cardano’s Alonzo hardfork?

Do you know what is included in Cardano’s Alonzo hardfork?

The Cardano Alonzo hardfork that adds smart contract support is quickly approaching and brings many changes to the Cardano blockchain.

At dcSpark, we made a video that explains these changes. This blog post servers as a summary of the key points in the video

Did you know Plutus smart contract execution cost calculation is a two step process? For each language (ex: Plutus), a “cost model” defines how much time & memory (ExUnits) is required for execution ExUnits is mapped to an ADA value Did you know transaction have a “IsValid” field set by block producers for contract execution status

Plutus contracts are deterministic & should never fail, but this field allows clients to skip contract execution when syncing

Did you know transaction validation has two phases?

Phase 1: Ensures Plutus contract execution will be deterministic

Phase 2: Executes the Plutus contract

So unlike Ethereum, Plutus contracts should never fail with out of gas!

Did you know transaction that call smart contracts require collateral?

Collateral can be any UTXO entry where:

It is not a script address Does not contain tokens

Collateral must cover at least the cost of contract execution in case contract execution fails (which should not happen thanks to determinism)

Did you know transactions now contain “redeemers”?

In transactions, you need to add one redeemer per script input in the transaction.

Redeemers allow passing user data to contracts and also allow specifying how much you will pay pools to process your contract call.

Did you know scripts can guard more than just transaction inputs?

In transactions, you need to add one redeemer per script input in the transaction.

You can have wallets where the following a guarded by a smart contract:

Reward withdrawal Token minting Certificate creation (ex: delegating) Did you kno...
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