SentioCP Attestation & Verification Framework (SAVF)
SentioCP introduces a cryptographic attestation framework designed to verify the provenance, integrity, and authenticity of outputs generated by decentralized AI agents. This framework leverages digital signatures, zero-knowledge proofs, and deterministic state representations to achieve complete verifiability—without relying on any centralized authority.
1. Formal Representation of Agent State
Let a SentioCP Agent be defined as a deterministic function:
fθ:X→Yf_\theta : X \to Yfθ:X→Y
where:
XXX is the input space
YYY is the output space
θ∈Rn\theta \in \mathbb{R}^nθ∈Rn represents the fixed model parameters
To cryptographically bind an output to a specific agent instance, we derive a state commitment using a collision-resistant hash function HHH:
C=H(fθ ∥ θ ∥ m)C = H(f_\theta \, \| \, \theta \, \| \, m)C=H(fθ∥θ∥m)
where mmm is the input message or prompt, and ∥\|∥ denotes byte-level concatenation.
2. Attestation Signature Scheme
Each agent instance is initialized with a public-private key pair (pk,sk)(pk, sk)(pk,sk).
Upon generating an output y=fθ(m)y = f_\theta(m)y=fθ(m), the agent signs the tuple (m,y,C)(m, y, C)(m,y,C) using a digital signature algorithm such as EdDSA:
σ=Signsk(m,y,C)\sigma = Sign_{sk}(m, y, C)σ=Signsk(m,y,C)
The attestation package (m,y,C,σ,pk)(m, y, C, \sigma, pk)(m,y,C,σ,pk) can be independently verified:
Verifypk(m,y,C,σ)=trueVerify_{pk}(m, y, C, \sigma) = \text{true}Verifypk(m,y,C,σ)=true
3. Deterministic Output Verification
To eliminate nondeterminism in generative model outputs, SentioCP enforces seed-locked generation:
y=fθ(m;s)y = f_\theta(m; s)y=fθ(m;s)
where sss is a shared pseudorandom seed. This ensures that the same input and seed always yield the same output:
fθ(m1;s)=fθ(m2;s) ⟹ m1=m2f_\theta(m_1; s) = f_\theta(m_2; s) \implies m_1 = m_2fθ(m1;s)=fθ(m2;s)⟹m1=m2
The seed is included in the attestation hash:
C=H(fθ ∥ θ ∥ m ∥ s)C = H(f_\theta \, \| \, \theta \, \| \, m \, \| \, s)C=H(fθ∥θ∥m∥s)
4. Zero-Knowledge Proof of Execution
For proprietary or sensitive models, SentioCP supports optional zk-SNARK-based attestation.
A prover generates a succinct proof π\piπ such that:
π=Prove(Rf,m,y)\pi = Prove(R_f, m, y)π=Prove(Rf,m,y)
where RfR_fRf encodes the execution circuit of fθf_\thetafθ. A verifier can confirm correctness without revealing the model internals:
VerifyZK(π,m,y)=trueVerify_{ZK}(\pi, m, y) = \text{true}VerifyZK(π,m,y)=true
This allows third parties to trust outputs while keeping model parameters and architecture confidential.
5. Blockchain Anchoring
To ensure immutability, SentioCP periodically commits attestation hashes to a blockchain smart contract (e.g., Ethereum):
SubmitAttestation(C,t)→on-chainSubmitAttestation(C, t) \to \text{on-chain}SubmitAttestation(C,t)→on-chain
where ttt is a timestamp or block height. This provides a tamper-proof audit trail for all model responses, verifiable by any participant.
6. Security Assumptions
The security of the SentioCP Attestation & Verification Framework relies on standard cryptographic assumptions:
Collision resistance of the hash function HHH
Unforgeability of the digital signature scheme under chosen-message attacks (UF-CMA)
Soundness and completeness of the zk-SNARK proof system
Determinism of the agent fθf_\thetafθ under fixed seeds
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