Do you have an answer to this question?
nostr:nevent1qqs99ny54q5mgauz7jpnfj5tcgaahgj20zzmwlk0hqy7xwtrmzzxtrcpp4mhxue69uhkummn9ekx7mqzyr5dvlzrtf99jvzwzs2zsr549mlp00jz2n72y7gkha3lnae72j46gqcyqqqqqqg203...
If your answer is an address index that also seems a bit underwhelming; BTCDrak already released such a Bitcoin Core fork over a decade ago but I guess no one really cared: https://bitcoinmagazine.com/technical/bitcoin-rbf-bitcoin-knots-and-bitcoin-addrindex-three-core-forks-that-don-t-break-with-consensus-1458237046
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