A few words, inscribed forever.
A declaration, a birth, a tribute, a promise: some words deserve better than a message that fades. Inscribe them on the Bitcoin blockchain — they will remain readable fifty years from now, exactly as you wrote them.
What people inscribe with btc3r
In 80 bytes, you don’t write a novel: you write the essentials. It is the constraint that gives the gesture its value.
A love, a proposal
A declaration, a marriage proposal, the anniversary of a first meeting: words that no hard drive, no social network, and no passing of time can erase.
An arrival into the world
A first name, a date, a few words of welcome: a message your child will be able to find themselves, as an adult, inscribed in the year of their birth.
A memory honoured
A few words for someone who has passed, a thought, a note of gratitude: a quiet, permanent memorial, independent of any platform.
A message to the future
A promise to yourself, a prediction, a wish for twenty years from now: inscribe it today, pass on the TXID, and make an appointment with the future.
The first message is seventeen years old
The very first block of the Bitcoin chain — block 0, the “genesis” block — was mined on 3 January 2009. Its creator inscribed a newspaper headline of the day, referring to a second bank bailout. That message has never been altered: it can still be viewed in seconds today, by anyone, on any block explorer.
No server to maintain, no subscription to renew, no company to depend on: the message survives because thousands of independent nodes, all over the world, continuously replicate the chain. Your message will benefit from the exact same mechanism.
Why Bitcoin lastsBTC
A newspaper headline from 3 January 2009, inscribed in the first block — still readable today.
What to know before inscribing
Permanence is a strength, provided you weigh its consequences. Three simple rules.
Your message is public
It will be readable by anyone, forever. Never inscribe an address, a phone number, sensitive data, or information about a third party without their explicit consent.
Your message is irreversible
No correction is possible after confirmation: reread every word. btc3r never broadcasts an inscription without your explicit approval.
Every byte counts
80 bytes is about 80 unaccented characters (an accented character takes two). The constraint is that of a haiku: it forces you to keep only the essentials.
How the message will be found, in ten or fifty years
Inscribing is not enough: it must be findable. The btc3r certificate is the key to passing it on.
Inscribe the message
Write, reread, confirm. Once the block is mined, the inscription is final.
Receive the certificate
It carries the transaction TXID, the block number and the timestamp: everything needed to find the message.
Pass on the TXID
Print the certificate, slip it into a family record book, an envelope, a will — or share it today.
The message is read again
Anyone holding the TXID finds the message on any block explorer, even without btc3r. See how.
Permanent messages: what people ask us
Will my message really be readable fifty years from now?
As long as the Bitcoin network exists, yes. The very first block of the chain, mined on 3 January 2009, contains a text message still readable today by anyone, on any block explorer. Your message benefits from the exact same mechanism: replication across thousands of independent nodes, with no expiry date.
Who will be able to read my message?
Everyone. A message inscribed in plain text is public by nature: it is readable by anyone who views the transaction, forever. Never inscribe sensitive data, personal contact details, or information about third parties without their consent. For private content, inscribe its SHA-256 fingerprint instead.
Can I change or delete my message afterwards?
No, and that is precisely the point: once the transaction is confirmed in a block, the inscription is irreversible. No one — not you, not btc3r, not any authority — can remove it. Take the time to reread your message before confirming the inscription; nothing is broadcast without your explicit confirmation.
How long can my message be?
Up to 80 bytes, i.e. about 80 unaccented characters (an accented character takes 2 bytes in UTF-8). It is short — the length of a haiku or a dedication — and that is what forces you to choose the words that matter. For a longer text, inscribe its SHA-256 fingerprint or contact us for a custom solution.
How will my loved ones find the message in twenty years?
Thanks to the TXID (transaction identifier) shown on your certificate. Pass this certificate on as you would a family document: whoever holds it can retrieve and reread the message on any block explorer, even if btc3r no longer exists.
Other ways to use inscription
Proof of anteriority
Date a creation — manuscript, invention, code — before showing it to the world.
Learn more →Document timestamping
Contracts, minutes, reports: freeze the exact state of a professional document.
Learn more →Understand inscription
OP_RETURN, SHA-256, independent verification: the foundations explained simply.
Learn more →Write what deserves to last.
Inscribe your message for 9.60 € : it will be readable fifty years from now, exactly as you wrote it.