The primary output of transaction b53e3bc5…5377f141 has the next scriptPubKey:
OP_PUSHNUM_1 OP_PUSHBYTES_32 01010101…0101010101
The segwit softfork in 2017 outlined versioning guidelines for all native segwit outputs, however solely outlined spending guidelines for model 0.¹
This output price 5431 satoshis matches the native segwit schema, however the main OP_PUSHNUM_1 signifies that it’s a model 1 output. It reveals up as “Sort: UNKNOWN”, as a result of there are presently no spending guidelines for model 1 outputs lively on the community. Due to this fact, this output could possibly be spent by anybody, so long as they get a miner to incorporate a non-standard transaction of their block that claims the funds.
We’re anticipating the activation of the Taproot softfork in November, which is able to give precisely this output sample that means (see BIP341): Pay to Taproot (P2TR) outputs shall be model 1 native segwit outputs with a 32-byte witness program that consists solely of a public key.
Lastly, the general public key 01010101…01010101 right here is clearly not randomly derived from a non-public key, so the non-public key might be assumed to be unknown. The corresponding tackle will primarily turn into a “burn tackle” as soon as Taproot prompts and spending of funds obtained there should observe Taproot’s guidelines.
I surmise that whoever created this output in 2019 merely needed to be the primary particular person to create a Taproot output on the blockchain and was prepared to burn a number of satoshis on that.
¹There are two output varieties outlined in model 0: Pay to Witness Public Key Hash (P2WPKH) and Pay to Witness Script Hash (P2WSH).
