Every contribution, recorded forever.
Pay by card and sign in with your email: nothing new to learn. Behind the scenes, every contribution is written on Base, a public blockchain. Think of it as a shared public register that no one can change or delete, not even Ilyzlist. You don't have to trust us. You can check.
Nothing new to learn. Proof that never fades.
You contribute
By card, in a few seconds. No crypto, no wallet to set up.
It's recorded forever
The campaign, the amount and the date are written on the Base blockchain. Never your name or email.
Anyone can verify
Every record has a public link. You also get a certificate that stays yours.
Card payment
Stripe
Ilyzlist
records the contribution
Base blockchain
public, permanent
Your certificate
in your proof box
You don't have to trust us. You can check.
Proof you were part of it
Each contribution earns a certificate, recorded forever. It stays yours, even if Ilyzlist disappears one day, and builds a visible history of every child you backed.
Trust that brings support
People who don't know you hesitate to give online. Here, every contribution to your campaign is publicly verifiable. Supporters don't have to take your word for it: they can see it.
Latest contributions recorded
No names, no emails: just the facts, publicly verifiable.
| Date | Campaign | Amount | Proof |
|---|---|---|---|
| Sep 14, 2025 | Dream Trip: Meet the Grizzlies in Canada | $2.00 | Verify ↗ |
How it's built
For the curious: a Web2 product with a Web3 trust layer. Payments stay in cards and accounts stay in email, while proof lives on a public chain.
Smart contract
IlyzlistReceipts, written in Solidity with OpenZeppelin. ERC-1155 certificates, one per campaign, that cannot be transferred (soulbound). Covered by unit and fuzz tests with Foundry.
Privacy by design
Only an opaque identifier, the campaign, the amount and the date go on-chain. Names and emails never leave our database. A holder can burn their certificate; the record stays.
Invisible wallets
Each account gets a non-custodial Coinbase embedded wallet, unlocked by the Ilyzlist sign-in itself (custom JWT auth). No seed phrase, no extension, no pop-up.
Gasless
Records are written by an Ilyzlist smart account; transaction fees are sponsored through a paymaster. Users never need crypto.
Never blocks a payment
The Stripe webhook queues each record; it's written on-chain right after the payment, with idempotent retries that check the chain before every call.
Claim later
Contributed before having an account? Your certificates are issued to your wallet as soon as you sign up with the same verified email.
- Network
- Base Sepolia (test network)
- Certificates contract
- 0x1764…FCF3 ↗
- Ilyzlist recorder (smart account)
- 0x9BC6…ACA5 ↗
The words, explained
- Blockchain
- A public register copied on thousands of computers. Once something is written, it can't be changed or deleted.
- Base
- The blockchain Ilyzlist uses. Built by Coinbase, fast and low-cost.
- Certificate
- Your personal proof of a contribution. It can't be sold or transferred: it's simply yours.
- Proof box (wallet)
- A secure space created automatically with your account to keep your certificates. Nothing to install, no password to remember.
- Basescan
- A public website where anyone can look up any record on Base. Our "Verify" links open it.
Beta: records currently live on Base Sepolia, Base's public test network. Certificates have no monetary value.