Cowrie Research

coincorner-primary-sources-2026-05-02

3 min read

CoinCorner primary sources — 2026-05-02

Project status in this pass

  • No canonical standalone whitepaper or litepaper surfaced.
  • The clearest current source of truth is CoinCorner’s API documentation and first-party support corpus around Lightning, recurring payments, Send Globally, and the Bolt Card.
  • The materials consistently make CoinCorner look broader than a retail exchange or simple custodial wallet.

Primary-source snapshots

1) Business API homepage

  • URL: https://api.coincorner.com/
  • Key excerpt:
    • The page says the CoinCorner API makes building on Bitcoin and Lightning simple and lets businesses support Bitcoin and Lightning “without needing any wallet infrastructure.”
    • It documents a production-style auth model with API key, HMAC-SHA256 signature, nonce, SSL-only transport, and a 60-requests-per-minute rate limit.
    • That combination is strong evidence that CoinCorner operates a real integration surface for external businesses, not just a consumer app.

2) Sending and receiving via Lightning

  • URL: https://support.coincorner.com/api/v2/help_center/en-us/articles/360020667299.json
  • Key excerpt:
    • CoinCorner says users can send and receive BTC via the Lightning Network from the Send & Receive page.
    • Sending supports pasted Lightning invoices, Lightning addresses, and LNURL.
    • Receiving supports LNURL, account Lightning addresses, and generated invoices for specific sat amounts.
    • The article says Lightning withdrawals are free from CoinCorner’s side.

3) Recurring Lightning payments

4) What is Send Globally?

  • URL: https://support.coincorner.com/api/v2/help_center/en-us/articles/7032542268700.json
  • Key excerpt:
    • CoinCorner describes Send Globally as a product that lets GBP/EUR users transfer funds instantly to supported countries via the Bitcoin Lightning Network.
    • The article says the user’s GBP/EUR or BTC balance is converted into BTC, routed over Lightning, then converted into local currency by third-party partners for bank-account or mobile-money payout.
    • This is a clear sign that CoinCorner is operating a Bitcoin-powered remittance rail, not just spot exchange access.

5) Using Send Globally

  • URL: https://support.coincorner.com/api/v2/help_center/en-us/articles/7032882154908.json
  • Key excerpt:
    • The workflow shows a mobile-app send flow with destination-country selection, sender-balance choice, recipient banking details, quote confirmation, and payout to a recipient’s local-currency bank account.
    • The article says CoinCorner itself charges no fee on this flow, while partner-side fees may appear in the quoted amount.
    • This reinforces that the product packages operational payout orchestration on top of Lightning settlement.

6) The Bolt Card

  • URL: https://support.coincorner.com/api/v2/help_center/en-us/articles/5600580995346.json
  • Key excerpt:
    • CoinCorner says the Bolt Card is powered by NFC, the Bitcoin Lightning Network, and LNURL.
    • Once linked to a CoinCorner account, it can tap a point-of-sale device displaying a Lightning invoice and pay instantly from the user’s balance.
    • The same article says the card can also be preloaded as a Bitcoin gift card that another LNURL-withdraw-compatible wallet can sweep.

Working conclusion

CoinCorner is best cataloged as a Bitcoin payments, remittance, and wallet-control-plane provider that happens to include exchange and custody features. The decisive evidence in this pass was the combination of business API infrastructure, programmable Lightning send/receive features, scheduled Lightning payouts, cross-border local-currency settlement via Lightning, and NFC card-based payment tooling.

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