feat: add aggregate attestation support#181
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Add support for capturing aggregate attestations alongside single attestations. Aggregate attestations are broadcast on the `attestation` beacon API events topic and produce the same `BEACON_API_ETH_V1_EVENTS_ATTESTATION_V2` event type, but with populated `aggregation_bits`. Key differences from single attestations: - Uses *spec.VersionedAttestation instead of *electra.SingleAttestation - No subnet filtering (aggregates are broadcast globally) - Aggregation bits are hex-encoded in the output - No AttestingValidator metadata (aggregates represent multiple validators) Both TopicSingleAttestation and TopicAggregateAttestation share the same opt-in condition - if single attestation is enabled, aggregates are also enabled.
- Enable attestation subnet checking in the integration test - Add verification that attestation events (single or aggregate) are being captured - Increase timeout from 60s to 90s to allow for attestation events
Not all consensus clients emit attestation events at the same rate. Some clients may not have validators assigned during the test window. Make attestation verification optional to avoid flaky test failures.
The ethereum-package starlark code now uses 'depends_on' parameter for store_service_files which requires a newer Kurtosis version.
mattevans
approved these changes
Jan 19, 2026
# By Matty Evans (18) and others
# Via GitHub (17) and Matty Evans (1)
* master: (27 commits)
chore(typos.toml): update extend-exclude list to include go.mod and go.sum files for better typo checking coverage
chore(integration-tests.yml): specify kurtosis_version to ensure consistent test environment
build(deps): bump the actions group across 1 directory with 4 updates
chore: refactor command line flags and logging fields for better clarity and maintainability
fix(go.mod): update otlptracehttp dependency from v1.42.0 to v1.43.0 to address compatibility and improvements in functionality fix(go.sum): synchronize checksums for the updated otlptracehttp dependency to ensure integrity of the module
build(deps): bump github.com/ethpandaops/xatu
chore(go.mod): update dependencies to latest versions for improved stability and security chore(go.sum): update checksum values of dependencies to match the changes in go.mod
fix(go.mod): update various dependencies to their latest versions for enhanced stability and performance chore(go.mod): add go-eth2-client dependency for additional Ethereum features chore(go.mod): adjust indirect dependencies to ensure compatibility with updated packages
build(deps): bump crate-ci/typos in the actions group
build(deps): bump the actions group across 1 directory with 3 updates
style(main_test.go): remove unnecessary blank line in TestConcurrentShutdown function to improve code readability
chore(workflow): remove unnecessary empty line in release.yml for cleaner workflow file chore(deps): update golang to version 1.26.1 and golangci-lint to version 2.11.4 for improved performance and stability refactor(sentry): replace fmt.Sprintf with fmt.Appendf in applyOutputServerCredentials for efficiency in config.go refactor(test): use sync.WaitGroup's Go method instead of a goroutine for better readability in main_test.go refactor(events): change return type from interface{} to any for improved type safety in multiple event files refactor(integration): replace strings.Split with strings.SplitSeq for more explicit handling of strings in contributoor_test.go refactor(sink): update mockEvent Data method return type from interface{} to any for type safety in sink_test.go refactor(config): update yamlMap type to map[string]any for better compatibility in config.go refactor(ethereum): use range in for loops for cleaner syntax and better readability in various test files
chore(deps): update Go module dependencies
fix: bump kurtosis Go SDK to v1.16.6 to match CLI version
fix: update kurtosis apt source to sdk.kurtosis.com
fix: resolve govulncheck CI failures by updating Go toolchain and x/net
fix: resolve golangci-lint issues (gosec G115, unused nolint directives)
build(deps): bump the actions group with 3 updates
build(deps): bump the actions group with 2 updates
chore(govulncheck): enhance vulnerability check by adding more known unfixable vulnerabilities and improving output clarity chore(integration-tests): remove unnecessary triggers for pull requests on go files and related workflow files
...
# Conflicts:
# go.mod
# go.sum
# internal/integration/contributoor_test.go
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Summary
attestationbeacon API events topicBEACON_API_ETH_V1_EVENTS_ATTESTATION_V2event type but with populatedaggregation_bitsKey Differences from Single Attestations
*electra.SingleAttestation*spec.VersionedAttestationsingle_attestationattestationOnSingleAttestation()OnAttestation()Test plan
go build ./...golangci-lint run --new-from-rev="origin/master"go test -race ./...