Blockchain Gravityresearch
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CardVisa, Mastercard, Amex · through Stripe · renews until you cancel
Opens Stripe's checkout; we never see the card.
WalletUSDC or USDT from a wallet you connect · monthly: an allowance you sign and can revoke

A wallet on this device opens directly; on a phone, WalletConnect shows a QR code or opens the wallet app. Nothing is taken without your signature in the wallet.

On-chain transferAny wallet or exchange · a year at a time · BTC, ETH, SOL, XRP, XMR, LTC, DOGE, KAS, USDC, USDT
You get an address and the exact amount; the plan starts when the network confirms.
Pay a year in

The time shown is how long the network usually takes to confirm, from the moment your wallet sends, until the plan is on your account.

The exact amount is quoted for one hour at the current rate. Send from a wallet you control; an exchange withdrawal that deducts its fee from the amount will not match.

We take

Bitcoin · Ethereum · Base · BNB Chain · Solana · XRP Ledger · Litecoin · Dogecoin · Monero · Kaspa