Why not use a similar protocol to the one at https://bip47db...

test1
npub1uz0t8j90jw6axw4tlm49jn488ck6hsa2aewxghl6x4n466zhyvjqkklf4v
hex
845f2dd5723f5879670ea9a5b92456fbb8c55f83b67890bce36adf41a97d1986nevent
nevent1qqsgghed64er7krevu82nfdey3t0hwx9t7pmv7yshn3k4h6p4973npsprpmhxue69uhhyetvv9ujuem4d36kwatvw5hx6mm9qgswp84nezhe8dwn824la6jef6nnutdtcw4wuhrytlar2e6adptjxfqw4zw7qKind-1 (TextNote)
↳ Reply to inkan (npub16xnpfx85k8wzdhctang6860g3u64lds5kac73ddjwlg0lxdg9g3su56z6l)
You could try to stamp delegation and revocation declarations on BTC, but I wasn't sure if there's an easy way to look them up by participating keys, ...
Why not use a similar protocol to the one at https://bip47db.org/paper/ to look up NPUB addresses?
Raw JSON
{
"kind": 1,
"id": "845f2dd5723f5879670ea9a5b92456fbb8c55f83b67890bce36adf41a97d1986",
"pubkey": "e09eb3c8af93b5d33aabfeea594ea73e2dabc3aaee5c645ffa35675d68572324",
"created_at": 1788241610,
"tags": [
[
"e",
"343d7f7a484ff300e4c622a3af29afbe62357284f5ec9b668bae8059ba98459e",
"wss://relay.primal.net/",
"root",
"d1a61498f4b1dc26df0becd1a3e9e88f355fb614b771e8b5b277d0ff99a82a23"
],
[
"e",
"a179ab15249c082a75f2e1bbe4d84ac257827ced4e3913313cefb14b2a1d93b1",
"wss://relay.inkan.cc",
"reply",
"d1a61498f4b1dc26df0becd1a3e9e88f355fb614b771e8b5b277d0ff99a82a23"
],
[
"p",
"d1a61498f4b1dc26df0becd1a3e9e88f355fb614b771e8b5b277d0ff99a82a23",
"wss://relay.inkan.cc"
]
],
"content": "Why not use a similar protocol to the one at https://bip47db.org/paper/ to look up NPUB addresses?",
"sig": "24e90fe31f68362eed6dd535e156ff5ca090c6665c7be48fa75aa39a4185f752bcf75d41eca7197ccba86e34cf2c8ee7d9693f63e6883563701ebb3a0aaae7c7"
}