Synthex Forge Identity Control Proof Attestation

x402

Synthex Forge Identity Control Proof Attestation is a paid API for AI agents from x402.synthexforge.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-23).

Accepts structured evidence of identifier control (wallet address, DID, or public key) and returns a signed attestation proving documented control over that identifier.

Price / call$0.2

Seller volume →—

Success—

StatusUnknown

How this service works

Synthex Forge x402 Receive: 41 paid verification, attestation and governance endpoints (Ed25519 + SHA-256 signed artifacts) plus free verify/public-key/standard sibling routes. Paid routes answer HTTP 402 with an x402 v2 `payment-required` envelope (atomic USDC on Base mainnet, chain ID 8453). Free routes are declared with `security: []` per the x402scan discovery spec.

Output

A JSON response with an 'ok: true' confirmation, backed by an Ed25519-signed, SHA-256-hashed artifact attesting that the specified identifier is under documented control by the claimer — not a KYC assertion, purely a control attestation.

Example use cases

Wallet ownership proof for DeFi onboarding

“Can you get a signed attestation proving that our treasury wallet 0xDeF456... is controlled by our DAO? Use the signed-challenge method and include our challenge hash and signature as the control evidence, with claimer set to 'AcmDAO Treasury'.”

DID control attestation for credential issuance

“I need a control-proof for DID did:ethr:0x789... using the did-bind control method — here's the DID document as my control evidence. The claimer is 'Bob Smith'.”

Key-position control proof for governance voting

“Generate a control-proof attestation for public key 0xPubKey999 using the key-position control method, providing our key reference object as evidence, so we can demonstrate governance authority for the upcoming vote.”

Technical details

Endpoint

POSThttps://x402.synthexforge.com/v1/identity/control-proof?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a cryptographically signed, Ed25519-attested proof-of-control over a wallet address, DID, or public key — especially for governance, credential issuance, or compliance workflows that require a tamper-evident artifact rather than just a boolean verification. Prefer it over generic signature-check utilities when you need a durable, on-record attestation artifact rather than an ephemeral check.

Side effects

Missing required 'identifier' field returns validation error
Unsupported 'control_method' value causes rejection
Malformed or insufficient 'control_evidence' object leads to attestation failure
Payment not received or invalid USDC transaction on Base mainnet (chain ID 8453) results in HTTP 402 payment-required response
Invalid or expired signed challenge in control_evidence causes signature verification failure

Input

Schema · Request body

Field	Type	Description
claimer	string	Optional who/entity asserting the claim (carried verbatim).
identifier	string	The controlled identifier (wallet address / DID / public key).
control_method	string	How control is documented: 'signed-challenge' \| 'did-bind' \| 'key-position' \| 'credential'.
control_evidence	object	Structured control evidence the caller presents (challenge+signature, DID document, key reference, credential-like object, or an open list of signals). Non-determinative — asserts DOCUMENTED CONTROL, never KYC/identity.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true
  }
}

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