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Sovereign SDK: a toolkit for rollups with replaceable DA and proof

Sovereign SDK. Sovereign Labs.

The Sovereign SDK publishes a toolkit for building a rollup whose data-availability layer and proof system are modules, not a single chain's hard-wired choice.

A reading of the project's public design document. Not a copy, not a benchmark, and not an offer.

The Sovereign SDK publishes a toolkit for building a rollup whose data-availability layer and proof system are modules, not a single chain's hard-wired choice.
Evidence
Primary paper
Re-measured
No
Assumptions
3
Records linked
3

01 Claim ledger

What the paper is allowed to say

Each row is a sentence already in the study. The status is the same on every row: a model claim, not a live measurement.

  1. Claim 01 · Paper model

    The defect

    A toolkit is not a rollup. A chain built with it has whatever DA and proof the builder selected, including a centralised one.

  2. Claim 02 · Paper model

    The proposal

    The Sovereign SDK publishes a toolkit for building a rollup whose data-availability layer and proof system are modules, not a single chain's hard-wired choice.

  3. Claim 03 · Paper model

    The mechanism

    The state transition is the application's. The SDK supplies the plumbing that posts data and proofs.

  4. Claim 04 · Paper model

    The bound

    This note does not list production chains.

02 Three cuts

Observation, model, falsifier

A desk does not stop at the summary. Each claim is cut three ways, using only this study's own assumptions and checks. Nothing here is a new figure.

  1. 01 The defect

    Observation

    What the study says

    A toolkit is not a rollup. A chain built with it has whatever DA and proof the builder selected, including a centralised one.

    Model

    What has to hold

    You are reading the Sovereign SDK repository. A chain's deployment config is the fact.

    Falsifier

    What would retire it

    Which proof, if any, does the settlement contract check?

  2. 02 The proposal

    Observation

    What the study says

    The Sovereign SDK publishes a toolkit for building a rollup whose data-availability layer and proof system are modules, not a single chain's hard-wired choice.

    Model

    What has to hold

    You are reading the Sovereign SDK repository. A chain's deployment config is the fact.

    Falsifier

    What would retire it

    Which proof, if any, does the settlement contract check?

  3. 03 The mechanism

    Observation

    What the study says

    The state transition is the application's. The SDK supplies the plumbing that posts data and proofs.

    Model

    What has to hold

    No price, supply, yield, or adoption figure is added by this desk.

    Falsifier

    What would retire it

    What is centralised by default?

  4. 04 The bound

    Observation

    What the study says

    This note does not list production chains.

    Model

    What has to hold

    You are reading the Sovereign SDK repository. A chain's deployment config is the fact.

    Falsifier

    What would retire it

    Which DA module does the deployment use?

03 Sequence

One action, as an operating tape

  1. 01The state transition is the application's. The SDK supplies the plumbing that posts data and proofs.
  2. 02Replacing the DA module changes the availability assumption. Replacing the proof module changes what the settlement contract must verify.
  3. 03A default demo is not a security claim.

04 Load-bearing

The argument, and where a pitch drops it

  1. What the name has to mean

    The cut

    The Sovereign SDK publishes a toolkit for building a rollup whose data-availability layer and proof system are modules, not a single chain's hard-wired choice.

    Why it carries weight

    If this cut is skipped, the paper's name is being used without the mechanism that makes the name mean anything.

    Where it is dropped

    Choosing a sequencer, a DA layer, and a prover is three choices. The SDK does not collapse them.

  2. What actually moves

    The cut

    Replacing the DA module changes the availability assumption. Replacing the proof module changes what the settlement contract must verify.

    Why it carries weight

    If this cut is skipped, the paper's name is being used without the mechanism that makes the name mean anything.

    Where it is dropped

    A later client, parameter or reward formula is a different object from this paragraph.

  3. What a later deployment may change

    The cut

    A default demo is not a security claim.

    Why it carries weight

    If this cut is skipped, the paper's name is being used without the mechanism that makes the name mean anything.

    Where it is dropped

    A later client, parameter or reward formula is a different object from this paragraph.

05 Register

What has to be true

  • Model · Not re-measured

    You are reading the Sovereign SDK repository. A chain's deployment config is the fact.

  • Model · Not re-measured

    The document is the one at the source URL. A marketing page with the same brand is not this text.

  • Model · Not re-measured

    No price, supply, yield, or adoption figure is added by this desk.

06 Divergence

What happened after the paper

Choosing a sequencer, a DA layer, and a prover is three choices. The SDK does not collapse them.

A later client, parameter set, or reward formula is a different object. Cite this paper for the mechanism. Cite a primary release for the network. This desk has not re-run the proof.

07 Pre-mortem

What to check before you use the idea

  4. 0 of 3 marked on this browser. A mark is a reading note, not a pass, a rating, or a recommendation.

08 Anatomy

The paper, in the order a builder needs

The problem it names

A toolkit is not a rollup. A chain built with it has whatever DA and proof the builder selected, including a centralised one.

What the design proposes

  • The state transition is the application's. The SDK supplies the plumbing that posts data and proofs.
  • Replacing the DA module changes the availability assumption. Replacing the proof module changes what the settlement contract must verify.
  • A default demo is not a security claim.

How the mechanism is specified

  • The state transition is the application's. The SDK supplies the plumbing that posts data and proofs.
  • Replacing the DA module changes the availability assumption. Replacing the proof module changes what the settlement contract must verify.
  • A default demo is not a security claim.

What this page does not treat as proven

  • This note does not list production chains.
  • It quotes no performance.
  • Choosing a sequencer, a DA layer, and a prover is three choices. The SDK does not collapse them.

Why the desk still reads it

The Sovereign SDK publishes a toolkit for building a rollup whose data-availability layer and proof system are modules, not a single chain's hard-wired choice.

09 Lexicon

Terms, opened into the record

Module
A replaceable DA or proof component. The choice is the security.
Toolkit
Software for building a rollup. It is not one rollup's bridge.

10 Repository

Every linked record on this page

Underlined words open a page that already exists: a concept, a protocol profile, a failure record, or another paper. If a word is not underlined, this desk does not have a record for it.

This is Blockchain Lab's reading of a public design paper. It is not the paper, not a copy of it, and not an offer of tokens, equity, custody or a partnership. Later network behaviour can diverge from the text. Nothing here is investment, legal or technical advice.

Research status: Design paper. Last reviewed: 1 October 2026. This is a reading of a public paper, not investment, legal or security advice.