Why AWS KMS Loses the Block
The physics of centralized signing
Latency Tax
AWS KMS requires a network round-trip. In Solana, 35ms is ~10% of a slot. You are signing in the past.
Auction Blindness
Signers can't see the mempool. You commit to a bid without knowing the clearing price.
Bundle Reverts
Jitter causes bundles to land in the wrong slot. If you miss the leader, you pay the opportunity cost.
The Validator Sidecar
Deploy Sentinel Core directly inside your validator's VPC. Eliminate the internet. Sign over localhost.
Kernel Bypass (XDP)
Zero-copy packet injection directly to the NIC.
Jito Bundle Native
Construct and sign bundles in the same microsecond.
Kernel Bypass Networking
We use XDP (eXpress Data Path) and AF_XDP to bypass the Linux networking stack entirely. No context switches. No TCP overhead. Raw packet injection.
Jito Bundle Native
Sentinel Core speaks native Jito bundle format. Build atomic bundles (trade + tip) or back-run competitors with microsecond precision.
Secure Your Vote Keys.
Stop keeping keys on disk. Stop using slow Ledgers. Sentinel Validator Edition runs inside a dedicated Nitro Enclave with hardware-enforced anti-slashing rules.
PCR0 Hardware Sealing
Keys are sealed to the hardware measurements of the Enclave image. If the code changes, the keys refuse to decrypt.
42µs Vote Signing
Ultra-low latency signing preserves your skip-rate and improves block production performance.
Zero Persistence
Keys exist only in volatile RAM inside the isolated hardware boundary. No disk. No SSH.
"For a top 20 validator, reducing release latency by 50ms is mathematically equivalent to +15% stake weight in leader slot auctions."
42µs.
The difference between "Submitted" and "Confirmed".