What is blockchain timestamping?
Blockchain timestamping generally means linking a cryptographic hash of digital content to a public distributed-ledger record. The original content does not need to be written onto the ledger itself. HashMyWords uses Hedera Consensus Service rather than a conventional blockchain, but the evidence model is similar: a hash is recorded with an independently checkable network time.
The result is a public record that can later be compared with the same content. If the content still produces the same proof hash, it is consistent with the material represented by the earlier record.
The process in four steps
Why not just store the text on a website?
A conventional website database is controlled by the website operator. Administrators can usually edit, delete or replace records. That is useful for normal application data such as search indexes, accounts, labels and collections, but it should not be the permanent proof authority.
Hedera provides the separate evidence layer. HashMyWords uses its database to make the product fast and useful, while a confirmed HCS record remains independently checkable even if the application database later changes.
How HashMyWords uses Hedera
HashMyWords uses Hedera Consensus Service to record compact cryptographic proof hashes in a dedicated HCS topic. The HCS record does not contain the original file or private plaintext. The application treats Hedera's consensus timestamp for the message as the authoritative network time.
For current H2 file proofs, the HCS message is exactly the standard 64-character file SHA-256. Current Private text keeps its plaintext in the browser and records its standard SHA-256 publicly on Hedera. Historical hwm-private-v1 text proofs used a salted SHA-256 instead.
What cryptographic timestamping cannot do
The technology is deliberately narrow. It can create strong evidence about a proof hash and a point in ledger history. It cannot decide who owns an idea, whether a statement is true, whether a person actually created the material, or how a court should treat the evidence.
Those questions require context beyond the Hedera record.
Frequently asked questions
Does timestamping put my whole document on Hedera?
No. HashMyWords records a compact cryptographic proof hash rather than the full file or private message in its Hedera HCS record. Current H2 file proofs deliberately publish the standard file SHA-256.
Can HashMyWords change a confirmed HCS message?
No. HashMyWords cannot simply edit a message after the Hedera network has reached consensus on it.
Why does HashMyWords use SHA-256?
SHA-256 is a widely used cryptographic hash function that produces a fixed 256-bit fingerprint and is suitable for detecting changes in digital content.
Is a Hedera timestamp the same as a digital signature?
No. A timestamp links a proof hash to a recorded time. A digital signature is designed to demonstrate that a particular private key signed data.