`GetDestinationAddress` returns a different address compared to the online explorers

[qui8t]

I am trying to get the destination address of txout n=1 in the following TX.

{
    "txid": "7729045ec9b7cfe62811c7fee5b9b2839a1e45f3827867776b6671cabae84462",
    "hash": "7729045ec9b7cfe62811c7fee5b9b2839a1e45f3827867776b6671cabae84462",
    "version": 1,
    "size": 341,
    "vsize": 341,
    "weight": 1364,
    "locktime": 0,
    "vin": [ ... ],
    "vout": [
        { ... },
        {
            "value": 0.00000001,
            "n": 1,
            "scriptPubKey": {
                "asm": "04f816b480f87144ec4de5862adf028ff66cc6964250325d53fd22bf8922824b6f1e1f2c881ae0608ec77ebf88a75c66d3099113a7343238f2f7a0ebb91a4ed335 OP_CHECKSIG",
                "desc": "pk(04f816b480f87144ec4de5862adf028ff66cc6964250325d53fd22bf8922824b6f1e1f2c881ae0608ec77ebf88a75c66d3099113a7343238f2f7a0ebb91a4ed335)#f580dnzn",
                "hex": "4104f816b480f87144ec4de5862adf028ff66cc6964250325d53fd22bf8922824b6f1e1f2c881ae0608ec77ebf88a75c66d3099113a7343238f2f7a0ebb91a4ed335ac",
                "type": "pubkey"
            }
        }
    ],
    "fee": 0.00010000,
    "hex": "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"
},

Using the following code:

var hex = "4104f816b480f87144ec4de5862adf028ff66cc6964250325d53fd22bf8922824b6f1e1f2c881ae0608ec77ebf88a75c66d3099113a7343238f2f7a0ebb91a4ed335ac";
var script = new Script(hex);
var address = script.GetDestinationAddress(Network.Main);

I get:

address: "38BaJ4Vsv4XgyooXiZyLthTFZUxn97RWAA"

However, the online explorers, such as this, return the following address for this transaction.

1HSrPfMA5joCS5vTnRWQF7GyeodLQZHu6e

[joemphilips]

Use Script.FromHex for parsing a hex string, new Script(str) treats str as an asm.

[qui8t]

Do you mean the following? if so, it returns null address.

var script = Script.FromHex(hex);
var address = script.GetDestinationAddress(Network.Main);

[joemphilips]

It is because this is P2PK script pubkey, and p2pk does not have an defined address format. Reading your comment from previous issue, https://github.com/MetacoSA/NBitcoin/issues/1219#issuecomment-2224407074 you must either do the following depending on your goal.

1. Just use scriptpubkey (hex or asm) everywhere for the sake of uniformity
2. Skip p2pk, it has been legacy a long time ago anyway
3. build p2pkh address from the pk, which does not exist on the blockchain, so you must add metadata to tell that this is actually not built from a p2pkh but from a p2pk scriptpubkey.

I don't know your goal, so I cannot give any advice more than this.

[qui8t]

Thanks! Is option 3 the approach implemented by the chain explorers similar to the one I linked above?

[joemphilips]

Is option 3 the approach implemented by the chain explorers similar to the one I linked above?

Yes, I suppose.

[qui8t]

Any thoughts how I can do that with NBitcoin?

[joemphilips]

https://programmingblockchain.gitbook.io/programmingblockchain/other_types_of_ownership/p2pk-h-_pay_to_public_key_-hash

[qui8t]

Thanks! Have you tried the method in the link you suggested on the specific output I mentioned above? I tried, and still I get zero destination public keys, and not sure how I can get the same address as the online explorers for that specific output.