Note: Content-Type must be "application/x-www-form-urlencoded" or "application/json" POST /api/publish-tx.js tx64=... --> {"ok": true}
GET /api/check-addresses.js?addresses= (comma-separated base58 addresses) --> { "addresses": [ { "address": "...", "outpoints": [ { hash: n: block_number: value_str: }, ... ] } ] }