▲HIGHLAND DOCS

Wallets

A wallet here is an address you control on Base (chain id 8453). Highland never asks for a seed phrase or a private key, and it does not store the address you pay from. The chain is the record.

Use this page with Buy credits and the buy page.

Three ways to pay

  1. Browser wallet. On the buy page, after you get a quote, press Pay with browser wallet. MetaMask, Coinbase Wallet or Rabby will ask you to switch to Base and approve one USDC transfer for the exact quoted amount. If this browser has no wallet, the page says so and leaves the other two options open.
  2. Phone wallet. Open in phone wallet is an EIP-681 link. It fills the recipient, the token and the exact amount in a wallet app. Send it, then paste the transaction hash back on the buy page.
  3. Any other wallet. Copy the payTo address and the exact amount (all six decimals). Send USDC on Base, then paste the transaction hash (0x plus 64 hex characters) and press Check payment.

Credits appear after 3 confirmations. A rounded amount cannot be matched to your quote.

What you can paste

You haveWhat to do
0x and 40 hex charactersThat is the address. Upper or lower case 0x both work.
ethereum:0x…A wallet URI. The address is the part after the colon.
A BaseScan or Etherscan /address/0x… linkThe address is in the path. Pay the payTo from the quote, not the address in someone else's link.
A transaction hash (0x and 64 hex characters)That is a payment, not an address. Paste it in the transaction hash field.

Operator scratch pad

The Highland console Investigate tab can keep a public address in that browser tab: type it, or press Use browser wallet. It is not sent to Highland and it is not a payment. Customer investigations that put a wallet on a graph belong on REDEYE, at the Obsidian workbench, with the same address rules.

Standby

If the buy page says payments are on standby, the quote and wallet buttons stay so you can rehearse the flow. A standby quote does not move USDC. When mainnet charges are on, the same buttons settle a real transfer.