Digital Time Capsule for Life, Love, Family, and Promises
Let Time Witness What Matters.
Write to your future self, preserve family memories, and seal promises. Reopen them years later with timed delivery and permanence-focused storage.
Write today. Meet yourself, your memories, and your promises in the future.
No spam. Early access, launch updates, and your first future-letter template.
From a fragile mailbox to a permanent digital promise
Thirty years ago, people trusted a warehouse of letters. Today, we can build something stronger.
Decades ago, people wrote letters to themselves or to society and placed them in physical mailboxes to be mailed 10, 20, 30, or even 50 years later. Many never arrived because addresses changed, phone numbers disappeared, and the original system depended on one person and one place.
TimeWitness brings that romantic idea into the digital age: a global time-capsule app designed for long-term storage, multi-channel delivery, identity-based account recovery, and decentralized continuity.
Then
Physical letters, lost addresses, fragile storage
Now
Digital capsules, identity recovery, redundant backup, future delivery
The platform
Not just a letter app. A long-term memory infrastructure.
TimeWitness lets people seal meaningful content today and reopen it when time gives it new meaning. It serves individuals, relationships, families, organizations, and society.
The signature experience
Self-archaeology: one day, you will meet who you used to be.
Most apps capture the present, but TimeWitness lets you compare it with your future. Seal a letter or dream today, and reopen it years later.
Opening a capsule is like excavating a former version of yourself to rediscover your past courage, judgment, and growth.
"Years later, it is not just an old message. It is a past version of you."
How TimeWitness works
Step 1
Create your account
Sign up with phone, email, WeChat, Apple ID, or Google. Verification-code login can automatically create an account.
Step 2
Write or upload
Use the in-app editor with elegant paper and font templates, or upload photos of handwritten letters. Add photos, audio, video, and documents.
Step 3
Choose the future
Set an opening date: 10, 20, 30, 50, or 100 years. Create multiple capsules, each with its own timeline.
Step 4
Seal and protect
Capsules are stored securely. Users may optionally bind identity information for future account recovery.
Step 5
Deliver on time
When the time arrives, TimeWitness sends reminders through WeChat, email, app notifications, and future channels.
Step 6
Open, reflect, renew
Mark goals as achieved or not, add reflections, and create the next future capsule.
Everything worth remembering can become a time capsule.
Future Letters
Write to your future self, your child, your partner, your family, your team, or future society. Capture dreams, decisions, predictions, and promises.
Multiple Time Horizons
Set capsules for 10, 20, 30, 50, or 100 years — or create custom milestones for weddings, graduations, and life goals.
Beautiful Writing Experience
Use elegant digital paper, typography templates, and letter styles. Plain paper is free; premium stationery available as upgrade.
Handwritten Uploads
Take a photo of a handwritten letter and preserve the emotional texture of real ink and paper.
Multimedia Capsules
Upload photos, videos, audio, contract scans, signing photos, wedding footage, family portraits, certificates, and more.
Shared Authorization
Grant access to selected people. Permissions include view-only, collaborative notes, joint opening, and automatic sharing.
On-Time Delivery
China users receive WeChat pushes. Global users receive email reminders and full HTML letter content. Read opened capsules in the app.
Account Recovery
Even if you change phone numbers, emails, or social accounts, optional identity verification can help recover access years later.
Outcome Evaluation
After opening, mark goals as achieved, partially achieved, or not achieved, then add reflections and ratings.
Family Archive
Store family gatherings, elders' oral histories, ancestral photos, family trees, anniversaries, and migration stories.
Organization Memory
Companies and teams preserve signing moments, contracts, team visions, project goals, and financing milestones.
Social Predictions
Write predictions about society, economy, culture, and technology, creating a future archive of ordinary people's thoughts.
Made for the moments that deserve to survive time.
Write to your future self
Record childhood dreams, career goals, wealth goals, study plans, life wishes, and stage-by-stage reflections.
Messages children can open when they grow
Parents can leave letters, photos, and blessings at birth, school entry, adulthood, and other milestones.
Reopen your vows years later
Couples can upload vows, photos, and wedding footage, then reopen them after 7, 10, 20, or more years.
Love promises with a future date
Partners preserve anniversary memories, long-distance promises, proposal moments, and shared goals.
Promises between friends
Friends seal graduation words, startup vows, shared dreams, and brotherhood commitments for future review.
Ten-year reunion, remembered
Classes, clubs, and alumni groups upload photos, messages, and future goals with collective reminders.
A family archive that outlives devices
Move family memory beyond one person's phone and create a shared digital heritage across generations.
Record growth and inheritance
Teachers, mentors, and students preserve learning goals, comments, and blessings for future reopening.
Seal the moment of commitment
Teams preserve contracts, signing photos, meeting videos, original goals, and future evaluation checkpoints.
Let ordinary people leave records
Document what you believed, feared, expected, and predicted about the world.
Relationship archaeology: remember what you promised together.
TimeWitness is not only about the individual. Couples, families, friends, classmates, teams, and partners can preserve shared memories and shared commitments. Years later, they can reopen the same capsule together and ask: What did we promise? What changed? What survived? What should we begin again?
Designed for decades
The promise is not only to store. The promise is to deliver.
Time capsules only matter if they can survive time. TimeWitness is designed around long-term resilience: redundant servers, backup nodes, encrypted export, blockchain timestamping, open-source core modules, and community-governed continuity planning.
Primary + Backup Nodes
User data is written to a primary node and synchronized to independent backup nodes across different cloud providers and regions.
3-2-1 Backup Principle
Three copies, two types of storage media, and one offline cold backup help reduce the risk of permanent data loss.
Blockchain Timestamping
Capsule metadata such as recipient, delivery time, and content hash can be anchored to a public chain for long-term verification.
Open-Source Core
Core modules such as storage, scheduled delivery, and verification can be open-sourced after platform stabilization.
DAO / Foundation Continuity
A non-profit foundation or DAO structure can help maintain backup nodes and continuity if the original company cannot operate.
Annual Integrity Drills
Old capsules can be sampled annually to verify readability, recoverability, and delivery logic.
User-Owned Export
Users can export their encrypted letters and archives for personal storage.
Digital Will
Users may designate heirs or trusted contacts for long-term digital inheritance.
Your memories are personal. Your protection should be serious.
TimeWitness is built for emotional trust and technical trust. The platform protects private letters, family memories, identity recovery information, and shared permissions with careful security design.
Optional identity protection
Users may voluntarily bind a national ID number or upload an ID photo for future account recovery. Never required for basic use.
Encrypted storage
Sensitive recovery information is stored with strong encryption and isolated from ordinary user content.
Hash-first decentralized records
Decentralized nodes store hashes or verification metadata only, never plaintext identity information.
Permission control
Users choose who can view, jointly open, annotate, or receive a capsule.
No ID collection on marketing site
The website waitlist never asks for ID documents. Identity binding belongs inside the secure app flow only.
Transparent privacy promise
Clear links to Privacy Policy, Terms, Data Export, and Security Overview.
Simple enough for everyone
Long-term memory should be affordable.
Annual
About US $1.70 / year
- First month free
- Unlimited letters during subscription
- Store multiple capsules
- Set different opening dates
- Delivery continues after subscription ends
- App, WeChat, and email delivery
Monthly
Flexible short-term option
- Month-to-month access
- Same core writing and storage features
- Higher price to encourage annual
- Cancel anytime
Memory Add-ons
Premium enhancements
- Premium digital letter paper: ¥1/page
- Physical keepsake cards
- Printed letters and elegant envelopes
- On-chain sealing
- Decentralized storage options
- Enterprise packages
Frequently Asked Questions
Write today. Let time answer.
Start with one letter, one promise, one memory, or one dream. Your future self is waiting.
First month free after launch. No ID upload required on the website.