Yes. To prove that a provider has stored a file for you:
1. Send the provider a random nonce and a random byte range.
2. Ask the provider to concatenate the nonce to the substring of bytes from the file in the byte range, then hash the results and send them back. 3. Compare the hash to your own result of performing the same computation.
If the provider indeed has the file, then the hashes will match.
jimbocoin / jimbocoin 🃏
npub1v9…x9q3h
2023-06-19 10:49:45
in reply to nevent1q…gcvq
Author Public Key
npub1v9qy0ry6uyh36z65pe790qrxfye84ydsgzc877armmwr2l9tpkjsdx9q3hPublished at
2023-06-19 10:49:45Event JSON
{
"id": "692da880ebc82cd348422f6cfffc98df644647243dd2be54933b4669c5c1363e",
"pubkey": "6140478c9ae12f1d0b540e7c57806649327a91b040b07f7ba3dedc357cab0da5",
"created_at": 1687171785,
"kind": 1,
"tags": [
[
"e",
"da7eb9b38f8ff3075fc918002e30f12411eff798f8a8f3ef3a5b59e57b2cab71"
],
[
"p",
"0c24e3235228f3ee5369d4a8a46ea92f28f1a83936de61ac6b4003d40344d422"
]
],
"content": "Yes. To prove that a provider has stored a file for you:\n\n1. Send the provider a random nonce and a random byte range.\n2. Ask the provider to concatenate the nonce to the substring of bytes from the file in the byte range, then hash the results and send them back. 3. Compare the hash to your own result of performing the same computation.\n\nIf the provider indeed has the file, then the hashes will match.",
"sig": "871765b73c08b333e998d57e30ac75c6e11c6930ce239b9eed0d8f079c46e349600dbbe456e8c86e0bb6e4a37c8cc1133e9f71719b66a16c6c767e24bbc2928d"
}