Mensaje al 2050

The world’s time capsule

Write today.
Opens in 2050.

Write a letter to your child, your partner or yourself that opens on January 1, 2050. No one —not even us— can read it before then. A different kind of gift this Christmas or for a graduation.

Write my message· US$1.99Why no one can open it
Or leave one sentence for free
—
messages traveling
—
countries
The capsule seals in
No messages sealed yet. The first one could be yours.

Two ways to write to 2050

The Letter from Humanity or your personal letter

One letter written by the whole world, or a letter of your own for someone you love. Both are sealed today, and no one can open them before January 1, 2050.

Free

One sentence for the Letter from Humanity

Leave one sentence in your language. It is sealed alongside sentences from every country and opens on January 1, 2050.

In 2050 the letter will be public: don't include full names, emails or phone numbers.0 / 200

No email, no payment. It is encrypted in your browser before it leaves.

Your personal letter

A full letter for your child, your partner or yourself, with a certificate and email delivery on January 1, 2050.

Write my letter

How it works

Four steps. A 23-year journey.

01

You write

Your message is encrypted right here, on your phone. Our server only ever receives an unreadable file.

02

It locks toward the future

Using drand’s time-lock encryption: only the key for the round that matches January 1, 2050 at 00:00 in your country can open it. That key does not exist yet.

03

It is kept forever

The encrypted file is stored permanently, and its digital fingerprint is sealed on a public blockchain together with the rest of its batch.

04

It opens in 2050

On that day the network publishes the key and we notify the writer’s and recipient’s current emails. Anyone with the certificate or the recipient’s link will be able to open it with open-source software, even if we are long gone.

Why no one can open it

A lock whose key does not exist yet.

The drand network —the League of Entropy— brings together universities, companies and foundations from different countries. Every 3 seconds they jointly sign a new number. None of them can produce that signature alone.

Your message is locked to the signature for January 1, 2050. Today that signature is on no server and in no safe: it will be created on that day. There is no password to steal, no employee to bribe, no way to open it early.

Honesty first: this promise depends on the drand network still running in 2050. We explain it in the FAQ.

Current network round—
Opening round277,268,212
Rounds to go—
drand quicknet · 52db9ba70e0cc0f6… · BLS12-381 · tlock

The world you will open your message in

2050, as projected.

These are not certainties — they are the best estimates available today. Your message will arrive in that world.

9.700
million people

would live on Earth, according to the United Nations medium projection.

UN, World Population Prospects 2024
68 %
in cities

More than two thirds of humanity would live in urban areas.

UN DESA, World Urbanization Prospects 2018
0
net emissions

The mid-century goal aligned with the Paris Agreement. Chile wrote it into law for 2050 and is betting on green hydrogen and lithium.

Paris Agreement (2015) · Law 21.455, Climate Change Framework Law (Chile, 2022)
77
years of life

Projected global life expectancy around 2054, on a longer-living planet. In Chile, from 2028 there would be more people aged 65+ than under 15.

UN, WPP 2024 · INE Chile, population projections (2026)
AI
everywhere

Artificial intelligence would be part of healthcare, transport and everyday work. You may well read this message alongside it.

Qualitative projection based on current trends
Artemis
Moon → Mars

In April 2026, Artemis II flew people around the Moon for the first time since 1972. The next missions aim to land there again and pave the way for the first crewed missions to Mars.

NASA, Artemis program

What would you say to someone who will live there?

Write my message

Constellation of messages

Every light is a country speaking to the future.

Ranking by country

    We only show how many messages each country has. Never who wrote them.

    Your message

    Write for January 1, 2050.

    0 / 1.200
    Only used for the map: a count per country.
    + Add our song (optional)
    It goes inside the encrypted message. We keep only the name, not the audio.
    DeliveryYour email and the recipient’s (or an adult in charge) are required. Your email: it receives your certificate, the 2050 notice and the option to recover it if you lose it. Emails are stored apart from the message and used only to deliver it. They are never public and you can delete them.
    To notify you in 2050 and send you your certificate.
    Optional and outside the encryption: it appears on the printable certificate (e.g. “Sofia”).
    If you are writing to a baby, a child or someone without email, this one is enough. If the message is for you, use your own email above.
    Your message is encrypted on this device. Only the encrypted file leaves it: we cannot read it, not now and not ever before 2050.
    Seal with

    Threats, hate speech and sexual content involving minors are not allowed. By continuing you accept the Terms and Privacy.

    Schools and companies

    A capsule for your whole class or team.

    Graduating classes writing to their future selves. Companies speaking to their 2050 team. Volume pricing, certificates with your name and a closing ceremony.

    Are you a creator?

    Earn 30% of every sale made through your link. Each sale is credited to one creator only: the last link that brought the person (valid for 30 days). Never more than 30% is paid per sale. Write to us choosing “Other”.

    I am a

    Honest answers

    What you should know.

    Can no one really read it before 2050?

    Really. The message is encrypted on your device with drand’s tlock scheme. The key to open it is a collective signature the network will produce on January 1, 2050; today it does not exist. We only store the encrypted file.

    What is the Letter from Humanity?

    It's a collective letter: each person adds one free sentence in their own language, encrypted just like the personal letters. It opens on January 1, 2050 at midnight in each time zone. The sentences aren't addressed to anyone in particular: once it opens, the letter will be published for the world to read, except sentences with insults or personal data. That's why we don't ask for your email or name.

    When does it close and open if I live in another country?

    Everything happens in your local time. The capsule closes for you at midnight on December 31, 2026 in your time zone (your browser detects it), and your message opens on January 1, 2050 at 00:00 in that same zone: we lock it to the drand round for that instant and store the zone on your certificate. A message written in Santiago opens at Santiago’s midnight; one written in Tokyo, at Tokyo’s.

    How does it reach the person?

    When you seal it you get your certificate and a secret link for the recipient (plus a printable certificate with a QR code and a rescue code). You can send it today via WhatsApp or ask us to notify them by email. On January 1, 2050 we send the opening notice to the emails on file at that time. And anyone with the certificate or the recipient’s link can open it, even if we no longer exist.

    What if their email changes?

    Very likely in 24 years. The recipient can update their email from their link as often as they like, and you can update yours from your certificate. We use the email on file in 2050.

    What if I write to a baby, a child or someone without email?

    Print the certificate: it has a large QR code and a 16-character rescue code. You can add the email of an adult in charge (mother, father, guardian), which can also be changed. When the person grows up, they go to /2050/reclamar with the code and leave their own email.

    Can I choose a song?

    Yes: write the title and artist and they will be inside the encrypted message. We keep the name, not the audio, because songs have owners. In 2050, when it opens, we will offer to search for it on whatever music service exists then. When opening it, the recipient chooses: your song, their own, or our original “Music of the future”. Nothing plays until they tap.

    What if quantum computers exist before 2050?

    It's a real risk and we'd rather say so. The 2050 key uses cryptography that a very large quantum computer could break, and no one knows whether one will exist before 2050. If that happened, someone with such a computer and your letter's encrypted file could open it early; the letter would not be lost. To reduce the risk, encrypted files are not public and the permanent copy has a second lock (AES-256) that resists quantum computers. The file you download has only one lock: keep it private. We're evaluating an extra post-quantum layer and will adopt post-quantum timelock encryption once one is ready.

    What if the drand network stops before 2050?

    This is the main risk and we do not hide it. drand has been running since 2019 and is operated by dozens of independent organizations, but no one can guarantee 23 years. If the network stopped forever, the 2050 key would never be created and the messages could not be opened. Plan B under study: a backup copy encrypted to a custody key split among several institutions, usable only together and only after 2050. If we enable it, we will say so before you pay.

    What if you disappear?

    The encrypted file is kept in permanent storage and its fingerprint is sealed on a public blockchain. The way to open it is open source. You can also download your own encrypted file from your certificate and keep it yourself.

    Can I edit or delete it?

    Edit it, no: once sealed, neither you nor we can read it. We can stop showing it and delete our copy, but what is stored permanently cannot be erased. So please review it before sealing.

    Is it legally binding?

    No. It is a keepsake and a collective experiment, not a will, contract or legal document. Do not use it for legal, financial or medical instructions.

    What data do you keep about me?

    The encrypted file, the country you choose, the language and the payment details handled by Mercado Pago or PayPal. We do not ask for your name or email to seal. The map shows only counts per country.

    Can I add a photo?

    Soon. Because everything is encrypted, we first need to screen photos automatically before encrypting them, to prevent illegal content. Until then, text only.

    What happens to my payment if something fails?

    If your payment is approved and the message is not sealed, we will refund you. You can request it from your order link.

    Write my message· US$1.99

    Simulated payment

    This is a prototype: nothing will be charged. Simulate an approved payment to see your certificate.