Verification System

In a decentralized network, there's no guarantee that a node is actually running the model it claims. A dishonest node could return garbage output to save compute costs. CompressNode's verification system uses challenge-response proofs to mathematically verify every node is running authentic, unmodified compressed models.

The verification process works as follows:

1. Pre-computed challenge sets: for each model, CompressNode generates input/output hash pairs using a reference GPU with deterministic inference (temperature=0)
2. An authorized issuer calls issueChallenge(nodeAddress, modelId) on the VerificationEngine contract
3. The node's daemon detects the ChallengeIssued event via blockchain polling
4. The daemon runs inference on the challenge input and computes a sha256 hash of the output
5. The daemon submits the hash on-chain via respondToChallenge(challengeId, responseHash)
6. The contract compares: responseHash == expectedHash → pass, otherwise → fail

Verification results directly affect your node's reputation score (0 to 10,000):

• Pass: +100 reputation, node stays active
• Fail: node deactivated, -2,000 reputation
• Timeout (5 min): node deactivated, reputation penalty

Verification requires deterministic inference. The daemon always runs challenges at temperature=0 with top_p=1.0 to ensure identical output across all hardware. The GGUF quantization format produces consistent results across different GPU architectures, making cross-hardware verification possible.