FS anchor emitter

@@ -7,20 +7,15 @@ audience: vendor-public
bcsc_class: current-fact
language: en
paired_with: fs-anchor-emitter.es.md
## See Also

- [[service-fs-architecture]]
- [[service-fs-security-compliance]]
- [[worm-ledger-design]]

---


The `fs-anchor-emitter` is the component responsible for generating signed checkpoints of the {{gli|WORM}} ledger and preparing them for external anchoring. This guide details the setup and operational requirements for ensuring ledger integrity across both Vendor (Foundry) and Customer (Totebox) environments.

The `fs-anchor-emitter` is the component responsible for generating signed checkpoints of the WORM ledger and preparing them for external anchoring. This guide details the setup and operational requirements for ensuring ledger integrity across both Vendor (Foundry) and Customer (Totebox) environments.

## Overview of Operation

The emitter operates at Layer 4 of the {{gli|WORM}} stack. It periodically reads the latest state of the per-tenant tile tree, generates a `signed-note` checkpoint, and stores it in the authoritative `$FS_LEDGER_ROOT/<moduleId>/checkpoint` file. These checkpoints are then consumed by the monthly workspace anchoring process to be posted to the Sigstore Rekor transparency log.
The emitter operates at Layer 4 of the WORM stack. It periodically reads the latest state of the per-tenant tile tree, generates a `signed-note` checkpoint, and stores it in the authoritative `$FS_LEDGER_ROOT/<moduleId>/checkpoint` file. These checkpoints are then consumed by the monthly workspace anchoring process to be posted to the Sigstore Rekor transparency log.

## Configuration Requirements

@@ -50,3 +45,9 @@ Before emitting a new checkpoint, the emitter is intended to perform an internal

## External Anchoring
While the emitter produces checkpoints hourly, external publication to Rekor is currently planned for a monthly cadence. This provides a balance between evidentiary density and network overhead.

## See Also

- [[service-fs-architecture]]
- [[service-fs-security-compliance]]
- [[worm-ledger-design]]