> All hashes and public keys are cached by the client[s]
The cache of a hosted web client can easily be manipulated by an instance admin. But if clients are independent, this might be a good solution (depends on your security requirements).
> public auditing
Bluesky's [did:plc](https://github.com/did-method-plc/did-method-plc ) is a good example of this. It's a centralized server but anyone can view and audit the ledger.
silverpill
npub19y…5wysk
2026-09-24 20:28:16 UTC
in reply to nevent1q…35lu
Author Public Key
npub19yg7mshq9vdtvvcm48svw03cmzewue4jug62cltnleh3y78khz5sm5wyskSeen on
wss://relay.momostr.pinkPublished at
2026-09-24 20:28:16 UTCEvent JSON
{
"id": "fd27862af7026c2f9ea172e9debc6ef0fa2cec0f0e7b0b58190560fd690d3558",
"pubkey": "2911edc2e02b1ab6331ba9e0c73e38d8b2ee66b2e234ac7d73fe6f1278f6b8a9",
"created_at": 1790281696,
"kind": 1,
"tags": [
[
"p",
"2911edc2e02b1ab6331ba9e0c73e38d8b2ee66b2e234ac7d73fe6f1278f6b8a9"
],
[
"e",
"f0f2b8cb9591e54bb84f901585c40274c0f5ce34f8c1ff37ec28692989406eb3",
"",
"root",
"1c0126d81d347d6ebadddac05c0d3051560c03dc3cffcc69c35218794cf07683"
],
[
"e",
"087fa6123627aa7ac7953670708f9822fd88eccc9dae28aa954f4c86b36e4ee1",
"",
"reply",
"1c0126d81d347d6ebadddac05c0d3051560c03dc3cffcc69c35218794cf07683"
],
[
"p",
"1c0126d81d347d6ebadddac05c0d3051560c03dc3cffcc69c35218794cf07683"
],
[
"proxy",
"https://mitra.social/objects/01a0d51a-c657-7321-8d72-4756199789e8",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://mitra.social/objects/01a0d51a-c657-7321-8d72-4756199789e8",
"pink.momostr"
],
[
"-"
]
],
"content": "\u003e All hashes and public keys are cached by the client[s]\n\nThe cache of a hosted web client can easily be manipulated by an instance admin. But if clients are independent, this might be a good solution (depends on your security requirements).\n\n\u003e public auditing\n\nBluesky's [did:plc](https://github.com/did-method-plc/did-method-plc ) is a good example of this. It's a centralized server but anyone can view and audit the ledger.",
"sig": "0674706b9503efa3906861cf2e82c6fbb19cacbe4cffc8e964fd3720f3604f8923b4f6959a141898f21c35a2609c89f70bc06f634cdd6b8db0b888d8fe2db3b7"
}