README
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VAAS - Validator-as-a-Service
vaas is a simplified implementation of the Interchain Security (ICS) protocol, derived from interchain-security. It provides core cross-chain validation functionality while removing complex features not needed for simpler deployments.
Overview
VAAS allows Cosmos blockchains to lease their proof-of-stake security to consumer chains. All active validators on the provider chain automatically validate all consumer chains - there is no opt-in/opt-out mechanism.
Features
Kept from ICS
| Feature | Description |
|---|---|
| Consumer Lifecycle | Full lifecycle management (REGISTERED → INITIALIZED → LAUNCHED → STOPPED → DELETED) |
| Key Assignment | Validators can use different consensus keys per consumer chain |
| Per-Consumer Infraction Parameters | Customizable slash/jail parameters per consumer |
| VSC Packets | Validator set updates sent at epoch boundaries |
| Double Voting Evidence | Handle double voting evidence from consumers |
| Light Client Misbehavior | Detection and logging of misbehavior |
| Consumer Metadata | Name, description, metadata for chain discovery |
| Client/Connection Reuse | Reuse existing IBC client/connection when creating consumer |
Removed from ICS
| Feature | Reason |
|---|---|
| Partial Set Security (PSS) | All validators validate all consumers |
| Top N / Opt-In Chains | No validator selection per consumer |
| Power Shaping | No caps, allowlists, denylists, priority lists |
| Consumer Reward Distribution | No cross-chain rewards |
| Slash Packet Throttling | Simplified slash handling |
| Per-Consumer Commission Rates | Validators use same commission as provider |
| Standalone-to-Consumer Changeover | Only new chains as consumers |
Learn More
Directories
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| Path | Synopsis |
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testutil
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keeper
Package keeper is a generated GoMock package.
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Package keeper is a generated GoMock package. |
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x
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vaas/consumer/types
Package types is a reverse proxy.
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Package types is a reverse proxy. |
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vaas/provider/types
Package types is a reverse proxy.
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Package types is a reverse proxy. |
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