Who is er1-verify for?

er1-verify is an open-source project built for developers.

Yes — er1-verify is open source under the Apache-2.0 license and free to use.

What platforms does er1-verify run on?

er1-verify runs on the command line and API.

Is er1-verify still active?

Unverified. er1-verify has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

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er1-verify

PyPIInfrastructure

er1-verify is the reference implementation for verifying Epistemic Receipts, which are constraint-state attestations used in agent systems. It allows developers to perform offline verification using Ed25519 signatures and related cryptographic primitives. The package is distributed on PyPI under the Apache-2.0 license and serves as a foundational tool for building systems that require verifiable, tamper-proof receipts.

Open SourceApache-2.0CLIAPI

Visit PyPI

Overview

4 features

er1-verify is a Developer Tools project. It focuses on verifying Epistemic Receipts and constraint-state attestations offline without relying on a central service. er1-verify is an open-source project aimed at developers. er1-verify is open source under the Apache-2.0 license. It runs on the command line and API.

er1-verify first shipped in 2026. Among its 4 catalogued features are Offline Verification, Ed25519 Support, and Constraint Checking.

Summary written by a language model from the project’s public pages.

Offline Verification
Ed25519 Support
Constraint Checking
Receipt Validation

Built with & integrations

Runs on

CLIAPI-only

Trust & compliance

License

Apache-2.0

Verified signals

HTTPSOpen Source

Indexing history

What PulseGate has recorded for this listing

Indexed5 Aug · 23:45 UTC
er1-verify verified against its public source
Source: PulseGate · Open

Frequently asked questions about er1-verify

What does er1-verify do?: Er1-verify focuses on verifying Epistemic Receipts and constraint-state attestations offline without relying on a central service. It is catalogued under Developer Tools on PulseGate.
Who is er1-verify for?: er1-verify is an open-source project built for developers.
Is er1-verify free?: Yes — er1-verify is open source under the Apache-2.0 license and free to use.
What platforms does er1-verify run on?: er1-verify runs on the command line and API.
Is er1-verify still active?: Unverified. er1-verify has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
When did er1-verify launch?: er1-verify first shipped in 2026.
Is er1-verify open source?: Yes — er1-verify is open source under the Apache-2.0 license.

At a glance

Platforms: Cli
Languages: English
License: Apache-2.0
First seen: 5 Aug 2026
Built for: developers
Model: Open source
Solves: Verifying Epistemic Receipts and constraint-state attestations offline without relying on a central service.

Registered as

PyPI: er1-verify

Developer

Pypi

Live coverage

Identity confidence: Low · 64
Indexed: 5 Aug 2026
Lifecycle: Alive
First seen: Aug 2026
Last seen: 5 Aug 2026

Identity audit (13)

Slug: er1-verify-pypi-org
Lifecycle state recorded: 5 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 5 Aug 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model from page content.
Last updated: 5 Aug 2026
Canonical URL: https://pypi.org/project/er1-verify

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