One core. Any future.

Identity Core.
Yours to keep.

You talk. Eternix listens. Your life becomes an Identity Core in your own words, sealed for the people you love and readable by any AI that comes next.

Encrypted with your keyEternix's own AI, in the EUAny model, today or later

Why now

AI is learning to recreate a person.
What it cannot invent is you.

Your stories, your people, the way you think and speak. Build it now, while you can, so the people you love can still talk to you.

One core · any AI

Plug in your core.
And it's you who shows up.

  1. 01

    Your core.

    Your stories, your people, how you think and how you speak. One file, sealed with your key.

  2. 02

    Into any AI.

    Your core opens as plain, signed files. Today's assistants can read it, and so can the ones that come after them.

  3. 03

    And it's you.

    Not a guess made from your photos. Your memories, in your own words, the way you would tell them.

ChatGPTClaudeGeminiLocal modelsFuture AI

Illustration. Your core gives an AI your words, memories and way of speaking; how it shows you, in text, voice or a face, depends on the AI you use.

How it works · 4 steps

  1. 01

    Talk.

    Speak or type, whichever is easier. Eternix asks, listens and follows up, like a calm friend who remembers. Sixteen topics, or just what's on your mind.

    Talk to Eternix · voice
    ETERNIXWho was your closest friend back then, and what did you do together?
    YOU · SPOKENRadu, from fifth grade. Every summer we rode our bikes to the lake at Tăuții and fished until dark.
    ETERNIXThe lake at Tăuții. Fishing until dark sounds peaceful. How often did you go there each summer?
  2. 02

    Eternix organises.

    Your words become cards: people, stories, dates, beliefs. The raw log stays word for word. Nothing is invented.

    Organised from this conversation34 words
    PersonRaduBest friend from fifth grade
    StorySummers at the lakeBikes to Tăuții, fishing until dark
    DateEvery summer, age 11–14Tăuții lake

    Raw log kept word for word · nothing invented

  3. 03

    It reflects.

    Now and then Eternix tells you one thing it noticed about you, and shows you why. Sometimes the most surprising thing in your core is what you learn about yourself.

    Reflectionsample
    You light up when you talk about being outdoors with the people you love.

    Why Eternix thinks this

    • Summers at the lake · story
    • Radu · person
    • "We fished until dark" · your words
  4. 04

    You seal it, per circle.

    One sealed pack for everyone, and one for each circle: children, partner, friends. Each gets only what you marked for them.

    Sealed packsAES-256-GCM · Ed25519
    Everyone142 items
    Children118 items
    Partner96 items
    Only menever exported

Privacy, first

Encrypted on your device.
You choose who may read it.

Your stories, answers and recordings are end-to-end encrypted in your browser before they are stored. Eternix keeps only what it cannot read. And while your words are turned into your Identity Core, you decide which AI, if any, may read them.

1

Private · default · works everywhere

Eternix's private AI

Our own model, on our own servers in the EU. Your device decrypts only the part being organised and sends it there. It is never stored, never used for training, and never sent to a public AI.

2

More private · your own AI

Your own AI

An open AI running on your own computer does the work. Your words never leave your devices, not even for a moment. Talk on your phone; your computer organises everything later.

3

Most private · no AI at all

Raw answers only

Written questions, and your answers kept exactly as you give them, encrypted. Nothing is analysed. Whoever opens your Identity Core one day can organise it with their own AI.

Each level lets fewer eyes see your words. Switch levels any time, in your Identity Core's settings.

01

Encrypted in your browser

Keys are made on your device and never leave it. Your recovery key, shown once at signup, is your backup; without it, not even Eternix can open your data.

02

Keys locked away

The key to each sealed pack is released to the people you chose only if you stop checking in. Until then nobody can open it, not even Eternix.

03

Signed, portable packs

Every pack is checksummed, signed and sealed with AES-256-GCM, and opens offline from a single file. No Eternix server needed.

04

Yours to control

Decide what each circle gets, keep things for yourself only, re-organise or delete whenever you want.

What Eternix does see: your email, payment and shipping details, and counts like how many words or cards you have and when they were saved, so the app can work. Never your stories, answers, recordings or photos.

For you, too

It's not only
for them.

Most people come for the people they love. You may find the talking itself becomes the gift: remembering, putting things in order, hearing your own life told back.

Eternix is not therapy. It is a patient listener with a good memory.

Grows as you fill it

The more you tell it,
the more it shows you.

Every conversation fills your Identity Core. As it grows, new ways to see your own life open up: a personality test, your life on a map and a timeline, the big questions, and a private layer only you can see.

  1. 15%Personality test
  2. 20%Timeline
  3. 30%Life map
  4. 40%Big questions
  5. 50%Deep part
Big Five12 / 50

How accurately does this describe you?

I am the life of the party.

Very inaccurateVery accurate
01

Know yourself, in numbers.

The Big Five, the model psychologists use most, from the public-domain IPIP pool. Fifty statements, one at a time, about seven minutes. Your answers are never saved, only the result.

Your shapeNow 20s
OutgoingWarmOrganisedCalmCurious
Biggest changeExtraversion88→28
02

Who you were, next to who you are.

Take it again as you were in your twenties, or as a teenager. Your avatar learns how you changed, not only who you are today.

Life map7 places
03

Your life on a map and a timeline.

Every place and date you mention is placed for you: where you grew up, lived, travelled and worked, decade by decade. The map is drawn in your browser; no map service sees where you have been.

Big questions7 / 13

II · Meaning

What do you think life is for?

To leave people a little better than I found them.

04

The big questions.

God, death, the purpose of life, politics. Thirteen questions your grandchildren will ask one day, answered in your own words, one at a time.

Deep part · only youOpens at 50%
SincerityFairnessGreed avoidanceModesty

Honesty and humilitySeen by you alone. Never in a pack.

Private conversationSoon

I left home at nineteen and didn't speak to my father for years.

I was afraid of becoming like him.

↓ the words are not stored

Kept, as a conclusionSlow to trust, deeply loyal once trust is earned.
05

The deep part.

Honesty and humility now, private conversations about the hardest things soon. Only conclusions are kept, never the confessions themselves. Only you see them, and they never go into a pack.

PrivateNever exportedAnswers not stored

The legacy lock

If you stop checking in,
the keys go to the people you chose.

Each circle's pack is sealed with its own key, and the key waits in a capsule for that circle. You check in every 3, 6 or 12 months. If you stop, the capsule opens and the key is theirs.

check-in check-in check-in missed key released
01

A key per circle

Ten generated words, or a passphrase of your own.

02

A capsule holds it

A private capsule for that circle keeps the key, encrypted.

03

You check in

Every 3, 6 or 12 months. A reminder comes by email.

04

It opens for them

Miss your check-ins and the capsule opens, with the key inside.

Any AI, with or without Eternix

From a sealed file
to a conversation.

A pack is a single file. It opens offline with its key and becomes plain, signed files any AI can read: in the cloud today, on a computer at home tomorrow.

ChatGPTClaudeGeminiLocal modelsFuture AI
identity-core-children

        

What's inside

The parts of a person,
kept apart on purpose.

Life factsWhere and when: birth, homes, schools, work.
PeopleWho matters, and why.
StoriesMemories, in your own words.
DatesBirthdays, anniversaries, turning points.
Family historyWhere you come from.
Values & beliefsWhat you stand for.
AdviceWhat you would tell them.
Questions answeredHundreds of small ones, answered.
VoiceHow you sound, with your consent.
WritingLetters, notes, the way you phrase things.
Photos & videoDescribed, dated, and marked for whom.
DocumentsThe papers that tell your story.

How to speak for me

"An avatar that forgets is forgivable; one that invents is not."

Off-limits topics, your tone, the things it must never say, and what to answer when it doesn't remember. Rules travel with every pack.

Bring what already exists

WhatsApp chats, your ChatGPT history, letters, PDFs, voice notes, photos. Read in your browser, approved one by one. Chats keep only your side.

txt · md · pdf · docx · eml · WhatsApp · ChatGPT · mp3 · m4a · wav · mp4 · mov · jpg · png · heic

Pricing

Building is free.
Keep it once, keep it safe for years.

Free€0
  • Free up to 25% of your core
  • 1 hour of voice to start
  • Seals, USB copies and exports, always free
Identity Core€33once
  • Keep building, no limits
  • No subscription
Legacy guardian€99/25 yearsRecommended
  • Lock, release emails and online copies, for all your circles
  • Or €15 a year
Voice€8/month
  • 5 hours of voice a month
  • Or 3 hours for €5
Gift box€35+ shipping
  • Box and keychain with your circle's code
  • Or print it yourself, free
See the box →

Prices in EUR.

Questions

Asked plainly,
answered plainly.

Is this an AI clone of me?

No. Eternix builds your Identity Core: the source material. Anything a future AI makes from it is an AI memory representation, not the real person, and will always be identified as one.

Can Eternix read what I say?

Your core is stored encrypted with a key only you hold. When you ask Eternix to organise, your device decrypts only that part and sends it to Eternix's own AI, which does not keep it. It never goes to a public AI and is never used for training.

What if Eternix disappears?

Your packs don't need us. Each one opens offline with its key into plain, signed files that any AI can read.

What do the people in a circle receive?

Only what you marked for that circle. Items for everyone go to every circle; items marked "only me" never leave your core.

Do I have to write a lot?

No. You never have to know what Eternix needs. Just talk, or bring what already exists.

Can talking about hard things be difficult?

It can. Go at your own pace, skip any topic, and stop whenever you like.

Which languages?

English, Română, Deutsch and Español, by voice or by text.

Talk. Keep. Give.

Start with
one story.

The archive grows every time you talk.