How can I see the on-chain evidence of a lighting channel?

Question

I am learning about lighting now and I'm trying to check my understanding on-chain w/ a block explorer. I have opened several channels already and closed some also.

I would like to confirm my understanding of the script logic (e.g. the 2-of-2 multisig, the HTLCs, and the conditional refunds) as described in the lightning white paper and other sources.

Unfortunately the block explorers I have tried only show "OP_0 " under the Pkscript fields for these transactions, Blockchain.com for example.

Is there any on-chain evidence of a lighting channel (before or after channel closure) or is that something that is discarded before settling on-chain?

Thanks in advance

Update: I found the 2-of-2 multisig tag on the input of a commitment transaction but there is no similar tag on the funding transaction (the one that creates the multi-sig output). The commitment transaction (the one that spends the mult-sig output) shows the following (op_code inputs omitted)

OP_PUSHNUM_2
OP_PUSHBYTES_33
OP_PUSHBYTES_33
OP_PUSHNUM_2
OP_CHECKMULTISIG

There is also an nSequence=0xffffffff and a prev output script of

OP_0
OP_PUSHBYTES_32

But I don't see things mentioned in the whitepaper like: OP_IF/ELSE/ENDIF, SIGHASH_NOINPUT, or HTLC

again i am just learning and I only want to know where the interesting bits are as I continue reading.

Answer 1

Transactions that create funding outputs have no special characteristics. The funding output is merely some type of segwit-output that can facilitate 2-of-2, i.e. P2SH-P2WSH or P2WSH, with P2TR to become available soon as well.

A transaction in which the channel owners collaborate to close a channel amicably does not have special characteristics except that it has a 2-of-2 input. If a channel gets closed by one channel owner unilaterally, it will use a commitment transaction with the characteristic timelocks on the closing party’s outputs, as well as optionally some anchor outputs or HTLC outputs.