Format is its body. Memory is its content. Together they form a unique address in the Library of Babel โ sealed, encrypted, yours.
App-enforced gate. Encryption is the real lock.
This Babel address unlocks on
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The model: Send the .bhb vault by any channel. Send the password by a different channel. Intercepting one alone is worthless โ same principle as a sealed letter + a separately mailed key.
PDF timestamping. Bitcoin sealed. No server. No account.