{
  "id": 6936154,
  "title": "Selecting a Nearby Crypto Recipient Without Exchanging Wallet Addresses",
  "url": "https://urgent.news/2026/09/12/selecting-a-nearby-crypto-recipient-without-exchanging-wallet",
  "topic": "finance",
  "section": "Finance & Markets",
  "published": "2026-09-12T13:54:28.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/darca/selecting-a-nearby-crypto-recipient-without-exchanging-wallet-addresses-4llo"
  },
  "original_language": "en",
  "account": "Transferring cryptocurrency typically begins with the sender providing a blockchain address to the recipient, which is then copied and sent via a separate channel. This process can become cumbersome when dealing with multiple networks, requiring the sender to validate the network before signing the transaction.\n\nDARCA addresses this interface issue by treating the transaction as a standalone primitive, even when two users are in close proximity. Through Bluetooth technology, the application can discover nearby DARCA profiles, allowing the sender to select the recipient without manually exchanging wallet addresses. Importantly, Bluetooth serves only as a discovery channel, remaining separate from the value-transfer channel. No cryptocurrency, seed phrases, or private keys are transmitted over Bluetooth, ensuring the security boundary is maintained.\n\nOnce a candidate recipient is identified through Bluetooth, the transaction construction and signing process remain consistent with the standard wallet flow. The sender chooses the asset and amount, reviews the recipient, network, and fee, and confirms the details with a PIN or biometrics. The transaction is then signed locally on the user's device and broadcast to the selected blockchain network.\n\nWhile Bluetooth simplifies the process of finding a suitable recipient, it is crucial to understand that this discovery mechanism does not authorize the transaction. The user must still authorize the transaction locally, ensuring they have reviewed all transaction details before confirming. Bluetooth does not make the payment reversible or turn the transfer into an internal movement between DARCA accounts. The ultimate threat remains in user confirmation, as a recognizable profile can help prevent address-copying errors, but it cannot replace the need to verify the asset, network, amount, and fee. The transaction remains final after confirmation, emphasizing the importance of the sender's final authorization. For engineers developing wallet user experiences, the key question is where to place the boundary between recipient discovery and transaction authorization.",
  "summary": "Wallet transfers usually expose a low-level identifier at the start of the user flow. The recipient finds a blockchain address, copies it, sends it through another channel, and the sender pastes it into the wallet. With multiple networks, the sender must also validate the network before signing. DARCA treats this as an interface problem around an unchanged transaction primitive. When two users…",
  "key_points": [
    "DARCA enables Bluetooth-based recipient selection without exchanging wallet addresses.",
    "Bluetooth serves as a discovery channel only, separate from value-transfer channel.",
    "Sender authorizes transaction locally, confirming details before final broadcast."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}