Speed isn't about signing fast. It's about waiting longer than everyone else.
The physics of centralized signing
AWS KMS requires a network round-trip. In Solana, 130ms is ~33% of a slot. You are signing in the past.
Signers can't see the mempool. You commit to a bid without knowing the clearing price.
Jitter causes bundles to land in the wrong slot. If you miss the leader, you pay the opportunity cost.
Deploy Sentinel Core directly inside your validator's VPC. Eliminate the internet. Sign over localhost.
Zero-copy packet injection directly to the NIC.
Construct and sign bundles in the same microsecond.
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.
Sentinel Core speaks native Jito bundle format. Build atomic bundles (trade + tip) or back-run competitors with microsecond precision.
Stop keeping keys on disk. Stop using slow Ledgers. Sentinel Validator Edition runs inside a dedicated Nitro Enclave with hardware-enforced anti-slashing rules.
Keys are sealed to the hardware measurements of the Enclave image. If the code changes, the keys refuse to decrypt.
Ultra-low latency signing preserves your skip-rate and improves block production performance.
Keys exist only in volatile RAM inside the isolated hardware boundary. No disk. No SSH.
The difference between "Submitted" and "Confirmed".