Add blob schedule to EL config files

The five-minute read

One action, walked through

1. Open EIP 7840 and read the status line before the examples.
2. Write down the rule in one sentence. A fair version of that sentence is: Add a new object to client configuration files blobSchedule which lists the target blob count per block and max blob count per block for each fork.
3. Name the object that changes: API.
4. Ask what an old client, an old contract, or an offline counterparty does. If the document is silent, the silence is part of the design.

The argument, unpacked

What has to be true

• You are implementing EIP 7840 at the status the text itself states: Final.
• The object that has to change is API. A neighbouring document with a similar name is not this one.
• Constants in the text can be superseded by a later fork. Cite the EIP number and the fork you mean.

What happened after the paper

The source marks this final. That is a statement about the text, not a promise that every wallet or node has shipped it. Later documents can narrow, replace, or ignore this one. Cite the number you mean.

What to check before you use the idea

• What does Add blob schedule to EL config files charge, reject, or redefine on the first touch versus a later one?
• Does a reverted subcall roll the change back?
• Can you point at the object in a client: API?

Terms

EIP 7840

The public text titled Add blob schedule to EL config files.

Final

The document's own label for how finished the text is. It is not a market fact.

The problem the paper names

An underpriced or ambiguous EVM rule is not a feature. It is a block that takes longer than the gas limit claimed, or a client that disagrees about the result.

What the design proposes

• Add a new object to client configuration files blobSchedule which lists the target blob count per block and max blob count per block for each fork.
• ensure there is a way to dynamically adjust the target and max blob counts per block - ensure there is a way to dynamically adjust the blob base fee update fraction - avoid complex handshake over engine API Extend client configuration files with the object blobSchedule, which has the following shape: json "blobSchedule": { "cancun": { "target": 3, "max": 6, "baseFeeUpdateFraction": 3338477 }, "prague": { "target": 6, "max": 9, "baseFeeUpdateFraction": 5007716 } } Clients must configure the target, max and baseFeeUpdateFraction per-fork.
• The behavior when the configuration is missing or incomplete for a fork is undefined.

How the mechanism is specified

• Taken from the specification, the next constraint is: ensure there is a way to dynamically adjust the target and max blob counts per block - ensure there is a way to dynamically adjust the blob base fee update fraction - avoid complex handshake over engine API Extend client configuration files with the object blobSchedule, which has the following shape: json "blobSchedule": { "cancun": { "target": 3, "max": 6, "baseFeeUpdateFraction": 3338477 }, "prague": { "target": 6, "max": 9, "baseFeeUpdateFraction": 5007716 } } Clients must configure the target, max and baseFeeUpdateFraction per-fork.
• Locate API in EIP 7840 and apply it to one transaction or call.
• Then check the failure the class of rule always has: a node that did not upgrade, a reverted call, a replayed signature, or a peer that does not speak the message.

What this page does not treat as proven

• A gas or opcode change is not a throughput benchmark. It is a relative price and a validity rule.
• Constants in the text can be superseded by a later fork. Cite the EIP number and the fork you mean.
• The source marks this final. That is a statement about the text, not a promise that every wallet or node has shipped it.

Why a venture studio still reads it

Use EIP 7840 when a pitch says 'Add blob schedule to EL config files' without saying whether the rule is consensus, policy, or an interface. The number is the citation. The pitch is not.