omni layer - how to parse it?

[allenday]

It seems to be the bitcoin chain synchronized by the omni-core client, but I want to access the omni layer data instead of the bitcoin data. How can I do this?

I tried and failed as follows:

blocksci_parser /data/omni.cfg update

Error while interacting with RPC: std::exception
terminate called after throwing an instance of 'BitcoinException'
  what():  std::exception

Here's the config file:

{
    "chainConfig": {
        "coinName": "custom",
        "dataDirectory": "/data/omni-parser",
        "pubkeyPrefix": [],
        "scriptPrefix": [],
        "segwitActivationHeight": 0,
        "segwitPrefix": ""
    },
    "parser": {
        "maxBlockNum": -6,
        "rpc": {
            "address": "10.1.1.6",
            "password": "y",
            "port": 3389,
            "username": "x"
        }
    },
    "version": 5
}

[hkalodner]

Since BlockSci only handles layer 1 parsing, it can't really do much directly with Omni Layer, although it should be totally possible to write code in BlockSci to parse out the Omni related txes.

Using the v0.6 interface you can do some simple data parsing with

omni_addresses = chain.addresses(blocksci.address_type.nulldata).where(lambda opreturn: opreturn.data.startswith(b'omni'))
omni = [x[4:] for x in omni_addresses.data]
version_and_type = [(int.from_bytes(x[:2], byteorder='big'), int.from_bytes(x[2:4], byteorder='big')) for x in omni]
common = Counter(version_and_type).most_common()

Which shows that there are 3416671 simple sends.

This method only turns up Omni Layer transactions which use Op return storage so it ignores the pubkey and multig formats which I haven't dug into. It's certainly easy to get all transactions including an output sent to the exodus address using:

chain.address_from_string("1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P").out_txes.to_list()