Cardano BuildersFund

Wallet Foundation

Connect a wallet — connection only, not payment

A real, test-safe wallet connection foundation. You can connect an injected Cardano wallet to read its network and addresses. Real funding stays disabled — nothing is sent or signed.

Wallet connection foundation — test-safe. You can connect a wallet to read its network and addresses. No ADA is sent, no transaction is signed, and no wallet data is stored. Real funding is still disabled.

Wallet connection foundation

This is a real CIP-30 connection — it detects injected wallets in your browser and reads public, read-only details after you approve. It is connection only, not a payment: no transaction is ever signed or submitted here, and no address is stored. On mainnet, the foundation stays disabled.

Wallet connection is for preview/readiness only. It does not sign transactions or move funds. For the current preview, use Typhon, Eternl, or VESPR.

Next in the journey: contribution preview, contributor transparency, and status & roadmap.

Wallet

Test-safe

Connection only — this reads your wallet’s network and addresses. It is not a payment.

Read-only connection. No ADA is sent. No transaction is signed. No wallet address is stored. No seed phrase or private key is ever requested — never share one.

Proof of control — signature only

Preview · signData only

Proving you control a wallet uses a message signature (CIP-30 signData), not a transaction. You sign a short, human-readable message; the result proves control of an address. It moves no funds, signs no transaction, and is shown locally only — nothing is sent or stored. Storing a verified proof is a separate, not-yet-enabled gate.

Prove control of a wallet (signature only)

This signs a short message with your wallet to prove you control an address. It uses CIP-30 signData only — there is no transaction, no funds, no custody, no payment, and no settlement. You can optionally save the signature as a proof; saving stores a signature only and never a private key.

Message to sign

Cardano Builders Fund wallet proof
Purpose: prove control of a wallet for future contribution-intent review.
Campaign: rehearsal-campaign-draft
No transaction. No funds. No custody. No settlement.
Timestamp: <set at sign time>
Nonce: <generated at sign time>

No injected Cardano wallet detected. Install/unlock Typhon, Eternl, or VESPR and refresh. (Nothing is sent or signed until you choose a wallet and approve the message.)

Signature only (CIP-30 signData). No transaction signing (signTx), no submission, no funds, no custody, no payment, no settlement. This campaign is not accepting support.

Why wallet connection matters

A connected wallet is how builders and contributors are attributed their activity — transparently, and without ever giving up custody of their keys.

Contributor identity

A verified wallet establishes who a contributor is, by proof of control rather than custody.

Contribution tracking

Contributions can be attributed to a wallet so a campaign's support is legible and auditable.

Refund / return proofs

A linked wallet is the basis for future, verifiable proof that contributions were returned when a campaign falls short.

Governance deposit participation

Wallet linkage is how a participant would later join a governance-action deposit pool, where ADA stays ADA.

Builder reputation

Over time, a builder's delivery history can be tied to a verified identity, so trust is earned in public.

The planned flow

Each step is either Planned or Later. None of it runs today.

  1. 1

    Connect a Cardano wallet

    Planned

    Choose a CIP-30 wallet in the browser. The wallet exposes its public address — nothing more.

  2. 2

    Sign a message to prove ownership

    Planned

    Sign a short, human-readable message to prove you control the wallet. This is a signature, not a transaction, and moves no funds.

  3. 3

    Link the wallet to your profile

    Planned

    Associate the verified address with your builder or contributor profile so activity can be attributed to you.

  4. 4

    Preview a campaign contribution intent

    Planned

    Review what a contribution to a campaign would look like — amounts, the USD estimate, and the oracle settlement rules — without submitting anything.

  5. 5

    Confirm on-chain transaction and settlement status

    Later

    Later, once approved, confirm a real on-chain contribution and follow its settlement and return status. This step is not built and not live.

Connect a wallet

Preview

No wallet connection is active. This panel previews the planned experience; it makes no browser wallet calls and moves no funds.

Supported-wallet direction

LaceEternlVesprNami-compatibleOther CIP-30 wallets

Intended support for CIP-30 wallets where appropriate. Specific wallet support will be confirmed as the integration is built.

Your keys stay yours

Cardano Builders Fund will never ask for your seed phrase or private keys.

  • Wallet ownership is proven by signing a message — never by handing over keys or custody.
  • We never see, store, or transmit your private keys or recovery phrase.
  • Anyone asking for your seed phrase or private key is attempting to scam you — do not share it with anyone, ever.

Known compatibility from latest manual test

Connection preview only — no real funds, no signing, no transactions. Wallet support is not universal, and these are point-in-time results that vary by browser, wallet, lock state, and network.

Typhon

Confirmed working

Connects successfully.

Eternl

Confirmed working

Connects successfully (injects as eternl or legacy ccvault).

VESPR

Confirmed working

Connects successfully — auto-connect observed.

Lace

Connection not completed

Detected and opens the wallet, but the connection prompt/approval did not complete in the latest test.

Yoroi

Not detected

Not detected in the latest test.

Gero

Not detected

Not detected in the latest test.

Which wallet should I use?

  • Use Typhon, Eternl, or VESPR for the current preview.
  • Lace may open without completing the connection. If testing Lace, check the site permissions, the wallet lock state, and the network/account selection.
  • Yoroi / Gero may not inject a CIP-30 provider in this browser/session; try enabling the extension, unlocking it, refreshing, or using another supported wallet.
  • This wallet preview does not move funds. No transaction signing. No contribution submission. No custody. No real funds.

Troubleshooting

Browser wallet injection varies by wallet and browser. If one wallet does not appear or fails to connect, try refreshing the page, unlocking the wallet extension, or testing another wallet.

  • Unlock the wallet extension and make sure it is enabled for this site.
  • Refresh the page so the wallet can re-inject its provider.
  • Approve the read-only reconnection prompt if your wallet shows one — no transaction is signed.
  • Try another wallet, and prefer testnet / preprod / preview where possible.
  • If a wallet is installed but still missing, it may inject under a different key — open the diagnostics below to see what your browser exposes.
Wallet detection diagnostics(0 detected of 0 keys)

Safe metadata only — provider keys and capability flags. No addresses or wallet objects are shown.

Detected providers: none

Expected but not detected: Lace, Typhon, VESPR, Eternl / ccvault, Nami, Gero, Yoroi, Flint, Begin, NuFi

No providers found under window.cardano.

If a wallet is installed but missing here, unlock it, enable the extension for this site, refresh the page, and check extension permissions. Some wallets only inject on approved sites or after unlock, or under a different key.

Current status

Wallet connection foundation is live in a read-only, test-safe mode: you can connect a wallet and read its network and addresses. Real funding is still disabled — no contribution is possible, no transaction is signed or submitted, and no wallet data is stored. On mainnet the foundation stays disabled. Nothing here is legal, tax, or financial advice.