Crypto payments
we can't turn off.

# create a payment
curl -X POST https://api.sovrn.ventures/v1/payments \
  -H "X-API-Key: sk_live_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": 99.99,
    "currency": "USD",
    "crypto": "BTC",
    "order_id": "ord_8421",
    "metadata": { "sku": "PEP-001" }
  }'

# response
{
  "payment_id": "pay_a1b2c3d4",
  "checkout_url": "https://sovrn.ventures/c/a1b2c3d4",
  "wallet_address": "bc1q8x4...",
  "crypto_amount": 0.00105,
  "expires_at": 1715352000,
  "status": "pending"
}

import requests, hmac, hashlib

# create a payment
r = requests.post(
    "https://api.sovrn.ventures/v1/payments",
    headers={"X-API-Key": "sk_live_your_key"},
    json={
        "amount": 99.99,
        "currency": "USD",
        "crypto": "BTC",
        "order_id": "ord_8421",
    },
)
payment = r.json()
print(payment["checkout_url"])

# verify a webhook
def verify(body, sig, secret):
    expected = hmac.new(
        secret.encode(), body, hashlib.sha256
    ).hexdigest()
    return hmac.compare_digest(expected, sig)

import crypto from "node:crypto";

// create a payment
const res = await fetch("https://api.sovrn.ventures/v1/payments", {
  method: "POST",
  headers: {
    "X-API-Key": "sk_live_your_key",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    amount: 99.99,
    currency: "USD",
    crypto: "BTC",
    order_id: "ord_8421",
  }),
});
const payment = await res.json();

// verify a webhook
function verify(body, sig, secret) {
  const h = crypto.createHmac("sha256", secret);
  return h.update(body).digest("hex") === sig;
}

// create a payment
$ch = curl_init("https://api.sovrn.ventures/v1/payments");
curl_setopt_array($ch, [
    CURLOPT_POST           => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        "X-API-Key: sk_live_your_key",
        "Content-Type: application/json",
    ],
    CURLOPT_POSTFIELDS => json_encode([
        "amount"     => 99.99,
        "currency"   => "USD",
        "crypto"     => "BTC",
        "order_id"   => "ord_8421",
    ]),
]);
$payment = json_decode(curl_exec($ch), true);

// verify a webhook
function verify($body, $sig, $secret) {
    return hash_equals(
        hash_hmac("sha256", $body, $secret),
        $sig
    );
}