We built permanent, self-healing, verifiable blockchain storage. You build the front-end for your audience. We split the revenue — yours is pure profit, ours covers infrastructure.
Simple, transparent, no gotchas.

Create a clean website or app for your audience. We provide the API, docs, and a starter API key.

Your users store documents through your interface. We handle storage, oracles, verification, and ZK proofs.

Each store generates a fee. 40% is yours. We keep 60% to cover oracle costs, infrastructure, and development.

Monthly payouts via Stripe or crypto. Your earnings grow with your user base — no cap, no ceiling.
What 40% of net revenue actually looks like.
Real audiences with real document storage needs — and no one serving them yet.
4.3M registered nurses in the US alone. Licenses, certifications, CPR cards — all need permanent, verifiable storage. Employers verify before every hire.
3.5M truckers. CDL licenses, DOT medical cards, insurance certificates, logbook records. Carriers and DOT inspectors need fast verification at every stop.

Copyright timestamping, release documentation, licensing records. Faster and cheaper than the US Copyright Office. Essential before label deals.

Invoices, compliance records, contracts, receipts. SOX, HIPAA, and MiFID II require 7-25 year retention. Permanent blockchain storage solves this cheaply.
Policy documents, claims records, certificates of insurance. Individual agents can offer permanent storage as a value-add to clients without technical knowledge.
Gold, silver, rare coins, high-value collectibles stored with Brinks or similar vaults. Permanent chain-of-custody records with ownership transfers. RWA play.

High-volume builders can run a dedicated HealChain oracle node. Your oracle fulfills your users' storage requests directly, reducing your infrastructure dependency on us. You pay oracle operating costs (ETH gas, server) as a business expense — potentially tax-deductible — and in return earn a greater share of revenue since we're not covering your fulfillment costs.
Oracle nodes require a subscription with HealChain (generating recurring revenue for us) plus staking the oracle wallet with native tokens on your target chains. Some builders view this as a strategic position: oracle wallet holdings in ETH, AVAX, BNB, and MATIC are business assets that may appreciate.
REST API, JS + Python SDKs, docs, examples
Dedicated key with usage tracking per builder
Ready-to-deploy HTML pages for common use cases
Direct access to the HealChain team
Store any document permanently on-chain with a single POST request. Your users pay $1.99 — you keep 40%.
/vault/store
Store a record permanently
{
"documentType": "nursing_certificate",
"documentId": "RN-2026-123456",
"issuerName": "Maine State Board of Nursing",
"subjectName": "Jane Smith RN",
"effectiveDate": "2026-01-15",
"paymentIntentId": "pi_stripe_or_hcp_crypto",
"vertical": "nurses",
"data": { "licenseNumber": "RN-123456", "state": "ME" },
"metadata": { "source": "yournursingapp.com" }
}
{"recordId": 42, "txHash": "0x..."}/stripe/create-payment-intent
Initialize card payment
{
"vertical": "nurses",
"metadata": { "source": "yournursingapp.com" }
}
{"clientSecret": "pi_...", "publishableKey": "pk_live_..."}/retrieve?id={recordId}
Retrieve any record — no auth required
X-API-Key: hc_your_api_key_here
Include your API key in every request header. Your key is tied to your revenue share account — all earnings tracked automatically.
Free to join. We review applications within 48 hours.
We'll review it and send your API key and technical docs within 48 hours. Check your email.