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Create and Deliver Certificates

The AVS developer needs to enable their service to produce stake-backed certificates that are verifiable by consumers. This includes:

  1. Creating and verifying certificates.
  2. Delivering or exposing certificates.
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The Hourglass template includes a reference implementation for certificate creation using an AVS aggregator.

Create and Verify Certificates​

To create a certificate for multiple Operators:

  1. Implement the offchain component to collect signed certificates from Operators.
  2. Create the certificate. Ensure the certificate includes the correct referenceTimestamp that corresponds to the latest (or desired) stake table version transported to the target chain. The referenceTimestamp must match the stake table exactly.

Typically, a certificate consists of an aggregation of Operator signatures that is verified against stake tables using the CertificateVerifier. In the case of a single Operator, the Operator can produce a certificate with only their signature.

Deliver or Expose Certificates​

Once created, certificates need to be delivered to Consumers, or stored in a location available to Consumers. Options include:

  • Deliver to Consumer in response to requests.
  • Push certificate to storage (for example, IPFS or L2 contract).

The required threshold (proportional or nominal) for verification also needs to be supplied to the Consumer.

Next​

The AVS Consumer receives, verifies, and acts on certificates returned from the AVS.