Sé que la primera transacción de litecoin segwit se puso en blockchain el 10/05/2017, y parece que no hay firma en los datos de los testigos, ¿cómo se firmó y verificó esta transacción?
https://chain.so/tx/LTC/ce385e55fb2a73fa438426145b074f08314812fa3396472dc572b3079e26e0f9
{
"txid": "ce385e55fb2a73fa438426145b074f08314812fa3396472dc572b3079e26e0f9",
"hash": "5f866ef62ad40b448090c444e86a3848af7626bb4b9108c0a517a05e9a957898",
"version": 1,
"size": 3665,
"vsize": 994,
"locktime": 1201535,
"vin": [
{
"txid": "6f45775d5f5b62bdd1527151ddb7f6b19a01bbcb6c3ecebf4c581f11851c1e37",
"vout": 0,
"scriptSig": {
"asm": "002091fb57fbeb6404cb412c104fcfb6bbcbe144884135d260879738f34f97d3d0ed",
"hex": "22002091fb57fbeb6404cb412c104fcfb6bbcbe144884135d260879738f34f97d3d0ed"
},
"txinwitness": [
"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],
"sequence": 4294967294
}
],
"vout": [
{
"value": 0.00000000,
"n": 0,
"scriptPubKey": {
"asm": "OP_RETURN 736567776974",
"hex": "6a06736567776974",
"type": "nulldata"
}
}
]
}
sha256 del último elemento debe ser 0x91fb57fbeb6404cb412c104fcfb6bbcbe144884135d260879738f34f97d3d0ed
El testigo contiene un solo elemento. calculemos (líneas largas despojadas):
static void test_litecoin ( )
{
const MyByteArray witness ( QByteArray::fromHex ( "4df501ffd8f[....]8c621ffd9696969696969" ));
const MyKey32 sha256 ( witness.sha256 ( ) );
qDebug ( ) << "sha256=" << sha256.toStringRev ( );
}
La salida de mi programa simple es:
sha256= "91fb57fbeb6404cb412c104fcfb6bbcbe144884135d260879738f34f97d3d0ed"
Bien, esto es correcto. Ahora ejecute el script en sí. escribe en consola el siguiente comando:
decodescript 4df501ffd8f[....]8c621ffd9696969696969
El resultado es (líneas largas eliminadas de nuevo):
{
"asm": "ffd8f[...]fd9 ffd8f[...]fd9 ffd8f[...]fd9 ffd8f[...]fd9 ffd8[...]fd9 ffd8[...]fd9 ffd8[...]fd9
OP_VERIFY OP_VERIFY OP_VERIFY OP_VERIFY OP_VERIFY OP_VERIFY",
"type": "nonstandard",
}
Siete veces el script empuja algunos datos basura y seis veces ejecuta OP_VERIFY. Este script se evalúa comotrue
Por lo tanto, el gasto de la dirección 32zyb29Yv4TBUnusDDLZ9kLKT55Fs772JWno requiere signing. Y verifyingla transacción no verifica ninguna firma ECDSA
Kinjia
amaclin