1. Fingerprint
ForeverVault takes a SHA-256 hash of the file. Change one byte and the hash changes.
A PAID EXTRA
Blockchain proof
A fingerprint of the file, recorded on Bitcoin. It proves this copy existed at a point in time. It does not publish the file. It does not prove a will is valid.
Paid. Not ForeverBinder. The sample below is the same certificate a Paid account can download. It is fictional and is not a real timestamp.
Blockchain Integrity Verification Certificate
Issued by ForeverVault to attest the integrity and timestamp of the document listed below using cryptographic hashing and anchoring on the Bitcoin blockchain via OpenTimestamps.
Document & Vault Context
Document Name
Last Will and Testament — Margaret Elena Ruiz (sample)
Vault Item ID
FV-ITEM-SAMPLE-0001
File Type
PDF
File Size
1.42 MB (sample)
Version
Version 1.0 (sample notarized copy)
Anchor ID (ForeverVault)
FV-ANCHOR-SAMPLE
Cryptographic Hash of the Document (SHA-256)
Salt: None (standard raw SHA-256 hash)
c05edf41584d935b0f9174487d81d1850873169a1f72a4a9b8e3a495b615c4bb
This hash is a one-way fingerprint of the document. Any modification to the file will produce a different hash, causing verification to fail.
Note: ForeverVault uses OpenTimestamps to anchor this hash to the Bitcoin blockchain. The OpenTimestamps proof can be validated independently using the OTS proof file and any compatible verifier, without contacting ForeverVault.
OpenTimestamps Status: Sample only — not submitted to calendars. (Proof ID: ots_sample_0001)
Blockchain Anchor (Bitcoin)
Blockchain Network
Bitcoin
Anchor Status
Sample — not on chain
Block Timestamp (UTC)
2026-09-11 15:00:00 UTC (sample)
Bitcoin Block Height
Pending (sample)
Bitcoin Transaction ID (TXID)
Not provided — this is a sample, not an OpenTimestamps proof
OpenTimestamps Proof
Proof ID: ots_sample_0001
Status: Sample only
Status: Sample only
Independent Public Verification Instructions
Anyone with a copy of the document can verify its integrity and blockchain timestamp without relying on ForeverVault. This sample is not a live proof.
- Obtain the original document referenced as “Last Will and Testament — Margaret Elena Ruiz (sample)”.
- Compute the SHA-256 hash using any standard tool (e.g.
shasum -a 256). - Confirm that the computed hash matches exactly the hash shown under “Cryptographic Hash of the Document”.
- Visit the ForeverVault verification portal and enter the Verification Code to view current anchor status.
- Optionally, validate the OpenTimestamps proof with any compatible verifier.
SAMPLE
Scan to open verification portal
VERIFICATION CODE FV-VFY-SAMPLE-0001
Or visit forevervault.com/blockchain/
Disclaimer: This is a sample certificate for a fictional estate. ForeverVault certifies that at the time of a real certificate, the hash value shown is computed for the referenced document and an OpenTimestamps proof is submitted for anchoring to the Bitcoin network. ForeverVault does not control the Bitcoin network or guarantee transaction inclusion times. This certificate does not constitute legal advice or a legal opinion. For legal questions regarding evidentiary use, consult a qualified attorney in your jurisdiction.
How it works
The file never goes on the blockchain. Only a fingerprint does.
2. OpenTimestamps
That hash is submitted to OpenTimestamps calendars. They collect many hashes and later write one commitment into Bitcoin.
3. Public record
Anyone who later has the same file can recompute the hash and check it against that record. They cannot read the document from Bitcoin.
The certificate they can download
A Paid account can download a certificate for a file that has been anchored. The sample uses a fictional will and a real SHA-256 of dummy text — not a live Bitcoin proof.
What it is not
- It is not encryption. Encryption is already on Free.
- It is not proof that the will is valid, signed, notarized, or the latest one.
- It is not a public posting of your papers. Only the fingerprint is recorded.
- It is not ForeverBinder. ForeverBinder is the file family and attorney open. See ForeverBinder.
Store the will today
Start free. Blockchain proof is on Paid, with ForeverBinder and more room.