New York, United States, February 25, 2026
InsumerAPI delivers privacy-preserving proof of token and NFT ownership at $0.04 per verification — with triple-SDK agent tooling (MCP, LangChain, GPT Actions) and zero blockchain knowledge required for merchants.
The Insumer Model
, the infrastructure platform that turns token holders into recognized customers with real-world perks, today announced InsumerAPI — a RESTful on-chain verification API that delivers cryptographically signed boolean proofs of token and NFT ownership without ever exposing wallet addresses, balances, or transaction histories.
Built by Douglas Borthwick — a Wall Street veteran with 30+ years at Morgan Stanley, Merrill Lynch, and Standard Chartered, and a pioneer in SEC-registered security token offerings — InsumerAPI is the sixth application in a complete production ecosystem that already includes:
A single POST endpoint (/v1/attest) checks 1–10 conditions against a wallet across 31 blockchains and returns only signed booleans — met: true or met: false. The actual balance is never revealed.
Every response carries an ECDSA P-256 signature that downstream systems — AI agents, merchants, auditors — can verify offline without re-querying the blockchain or repeatedly trusting the service.
For merchants, the economics are decisive:
Merchants onboard with zero blockchain knowledge, configure discount tiers through a dashboard or API, and integrate with existing payment processors such as:
Customers pay in dollars. Merchants receive dollars. Token ownership simply unlocks the discount.
InsumerAPI is the only on-chain verification API where an AI agent can complete the entire merchant lifecycle autonomously — from API discovery to directory listing — with no human in the loop.
An agent can:
Every step is authenticated and cryptographically signed.
Three published SDKs support autonomous AI agent integration:
No other Web3 MCP server, LangChain package, or GPT action in the market focuses on token-gated commerce, merchant verification, or merchant onboarding. The triple-SDK offering is unique in the space.
“The missing piece in token-gated commerce was never the blockchain — it was the bridge to the real world,” said Douglas Borthwick, Founder of The Insumer Model
“An AI agent can now go from zero to a fully onboarded, domain-verified, directory-listed merchant without a single human touching a keyboard. Meanwhile, a SHIB holder walks into a coffee shop that recognizes SHIB holders, taps their phone, and gets 10% off — without the merchant ever knowing details of their wallet other than that they own enough SHIB to meet a tier threshold. That’s the insumer economy.”
InsumerAPI offers:
Merchants join free with 100 verification credits included.
The Insumer Model provides privacy-preserving on-chain verification infrastructure for token-gated commerce. The platform enables businesses to recognize token and NFT holders with real-world discounts across 31 blockchains — no crypto payments, no wallet exposure, no data risk.
Built by Douglas Borthwick, drawing from 30+ years in finance and pioneering work in tokenized securities, the platform bridges digital asset ownership to everyday commerce through six connected applications and a developer API with triple-SDK agent tooling.
Douglas C. Borthwick
Email: press@insumermodel.com
X: @theinsumermodel
Website: https://insumermodel.com
