Verifiable Claims

Provable, tamper-evident assertions are essential reputation building blocks. Learn how teams leverage Ceramic to create, present, and validate verifiable claims.

What are Verifiable Claims?

Cryptographically Verifiable Statements

Users can make assertions about other entities, data, or about themselves. This data class is often referred to as attestations, and encompasses technical standards like W3C Verifiable Credentials.

Claim Frameworks

Frameworks that facilitate claims include features such as tamper-evident cryptographic signatures, public schema registries, presentation and validation formats, transparent provenance, and portability. This is because the credibility of a claim should only hinge on the reputation of the entity making it, not on the framework that was used to create it.

Gold-Standard Data Provenance

As a shared data network designed specifically for verifiable data at scale, Ceramic is designed for verifiable data at scale, providing the common characteristics of verifiable claims out-of-the-box, from cryptographically signed data events, to gold-standard data provenance and lineage specifications.

Build Composable Applications

Claims, attestations, and assertions are integral to establishing trust and credibility in a digital world. Ceramic not only provides a mechanism to create, verify, and validate claims across flexible scenarios, but makes it possible for developers to build composable applications on user-owned assertions that aggregate to form reputation, identity, and trust.

ComposeDB offers native features for verifiable claims, from assertions and attestations to lineage specifications


Transparent Provenance

Like all data on Ceramic, assertions and claims can only be created and controlled by one account using a familiar “Sign in With Ethereum” authentication flow.


Cryptographically Signed Events

Commits within a data stream on Ceramic are cryptographically signed by the authenticated controller, ensuring each immutable data event can be verifiably linked to the creator’s account.


Commits Are Immutable Snapshots

Each commit within a data stream is immutable once created, allowing updates to be made to the current “state” with an immutable log of the data’s lineage.

Public Schema

ComposeDB as a Public Schema Registry

Once deployed to the Ceramic Network, data models on ComposeDB become immutable, public schema that any network participants can write to or read from, similar to an on-chain schema registry or registries used for W3C Verifiable Credentials.

Implementation Variations

Some development teams choose to save the signed payloads from attestations and verifiable credentials to Ceramic, while others leverage the native qualities of Ceramic to create verifiable claims.

Teams building claims on Ceramic

Self-Sovereign Identity

Masca is a MetaMask Snap that allows users to save Verifiable Credentials to Ceramic.

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Gitcoin Passport is a sybil resistance protocol and identity aggregation dApp built on the Ceramic Network.

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Credential-Backed Resume

VESS Resume is a self-sovereign credential resume built on the Ceramic Network.

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Social Experiences

Orbis is a composable ecosystem of social experiences built on Ceramic and supports the issuing, storing, and validating of credentials.

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Flexible Attestations

Intuition is a knowledge-sharing ecosystem that enables the creation of reputation and trust across the digital realm using attestations.

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Vet Grant Recipients

CharmVerse uses attestations to make assertions about users who have applied for grants, all the way through grant acceptance and receipt.

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Proofs over user data claims

Snickerdoodle, a privacy-preserving digital marketing platform, created Zero Knowledge (ZK) proofs as a computed result of attested user engagement data.

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Opt-in marketing built on claims

Oamo is a decentralized data broker that allows users to generate credentials matching their on and off-chain behaviors that are eventually stored in ComposeDB.

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“Share to earn” model using claims

Pact.Social can be thought of as a decentralized, allowing users to promote causes using Verifiable Credentials.

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Proof of creativity

Newcoin is an algorithmic creator coin that leverages participant attestations and claims about other creative entities such as music or artwork.

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Enough reading