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Farcaster: identity contracts and off-chain messages

Farcaster. Farcaster.

Farcaster publishes an identity on a settlement chain and messages stored off that chain, so a social post is not itself an Ethereum transaction.

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

Farcaster publishes an identity on a settlement chain and messages stored off that chain, so a social post is not itself an Ethereum transaction.
Evidence
Primary paper
Re-measured
No
Assumptions
3
Records linked
4

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 sufficiently decentralised social network is a claim about who can host the messages. The contracts alone are not the network.

  2. Claim 02 · Paper model

    The proposal

    Farcaster publishes an identity on a settlement chain and messages stored off that chain, so a social post is not itself an Ethereum transaction.

  3. Claim 03 · Paper model

    The mechanism

    The registry binds a key to an identifier. That binding is on-chain. The cast, the follow, and the frame payload are messages signed by that key.

  4. Claim 04 · Paper model

    The bound

    No user count is stated here.

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 sufficiently decentralised social network is a claim about who can host the messages. The contracts alone are not the network.

    Model

    What has to hold

    You are reading Farcaster's protocol docs, not a client's ranking algorithm.

    Falsifier

    What would retire it

    What does the on-chain contract actually store?

  2. 02 The proposal

    Observation

    What the study says

    Farcaster publishes an identity on a settlement chain and messages stored off that chain, so a social post is not itself an Ethereum transaction.

    Model

    What has to hold

    You are reading Farcaster's protocol docs, not a client's ranking algorithm.

    Falsifier

    What would retire it

    What does the on-chain contract actually store?

  3. 03 The mechanism

    Observation

    What the study says

    The registry binds a key to an identifier. That binding is on-chain. The cast, the follow, and the frame payload are messages signed by that key.

    Model

    What has to hold

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

    Falsifier

    What would retire it

    What does the on-chain contract actually store?

  4. 04 The bound

    Observation

    What the study says

    No user count is stated here.

    Model

    What has to hold

    You are reading Farcaster's protocol docs, not a client's ranking algorithm.

    Falsifier

    What would retire it

    What does the on-chain contract actually store?

03 Sequence

One action, as an operating tape

  1. 01The registry binds a key to an identifier. That binding is on-chain. The cast, the follow, and the frame payload are messages signed by that key.
  2. 02Hubs store and gossip those messages. A hub is not a blockchain, and two hubs can disagree until the protocol's rules say who wins.
  3. 03An application can censor what it displays without censoring the signed message. Display and availability are different.

04 Load-bearing

The argument, and where a pitch drops it

  1. What the name has to mean

    The cut

    Farcaster publishes an identity on a settlement chain and messages stored off that chain, so a social post is not itself an Ethereum transaction.

    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.

  2. What actually moves

    The cut

    Hubs store and gossip those messages. A hub is not a blockchain, and two hubs can disagree until the protocol's rules say who wins.

    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 hosted client is not the protocol.

  3. What a later deployment may change

    The cut

    An application can censor what it displays without censoring the signed message. Display and availability are different.

    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 Farcaster's protocol docs, not a client's ranking algorithm.

  • 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

Storage fees or rents, if the docs specify them, are parameters and are not copied here.

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

  1. 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 sufficiently decentralised social network is a claim about who can host the messages. The contracts alone are not the network.

What the design proposes

  • The registry binds a key to an identifier. That binding is on-chain. The cast, the follow, and the frame payload are messages signed by that key.
  • Hubs store and gossip those messages. A hub is not a blockchain, and two hubs can disagree until the protocol's rules say who wins.
  • An application can censor what it displays without censoring the signed message. Display and availability are different.

How the mechanism is specified

  • The registry binds a key to an identifier. That binding is on-chain. The cast, the follow, and the frame payload are messages signed by that key.
  • Hubs store and gossip those messages. A hub is not a blockchain, and two hubs can disagree until the protocol's rules say who wins.
  • An application can censor what it displays without censoring the signed message. Display and availability are different.

What this page does not treat as proven

  • No user count is stated here.
  • A hosted client is not the protocol.
  • Storage fees or rents, if the docs specify them, are parameters and are not copied here.

Why the desk still reads it

Farcaster publishes an identity on a settlement chain and messages stored off that chain, so a social post is not itself an Ethereum transaction.

09 Lexicon

Terms, opened into the record

Hub
A server that stores signed messages. It is not a validator of a chain.
Signer
The key authorised by the identity contract to publish messages.

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.