Real estate contracts signed online and verified by blockchain

Purchase agreements, lease contracts, property deeds — signed online, no printing. Chaindoc handles the legal paperwork side: e-signatures that courts recognize, a blockchain record proving what was signed, and payments collected the same day.


Who it's for

Built for every real estate professional

Agents, agencies, investors, architects — the document process works the same for all of them.

Realtors and agents

Send purchase and lease agreements for e-signature in minutes. Track who has signed, who hasn't, and when each document was completed — without chasing clients by phone.

Real estate agencies

Client contracts, listing paperwork, contractor agreements — all searchable, all in the same account. No lost files, no emailing revised PDFs back and forth.

Architects and designers

Protect authorship on plans and project materials. Every file upload gets a blockchain record that proves who created it and when — useful when disputes arise.

Investors

Get blockchain-verified proof of ownership for every investment transaction. The full audit trail — who signed what, when, and in what order — is already in the document history.


How Chaindoc speeds up real estate transactions

Paper contracts delay closings. Chaindoc removes that bottleneck — get documents signed, track every change, and collect payment without printing or couriering anything.

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Use cases

Real estate workflows Chaindoc handles

Sales agreements, lease contracts, development deals, investment documents — whatever the transaction, it runs through the same signing process.

Realtors

Sign purchase and sale agreements online. Track signature status across multiple transactions without spreadsheets or follow-up calls.

Lawyers

If a transaction ends up in dispute, everything's already logged: authorship confirmed, every version timestamped, every signature recorded.

Builders

Sign cooperation agreements with partners, buyers, and investors online. Payment milestones and delivery terms go into the same signed document.

Investors

Blockchain-verified ownership records and a complete audit trail. Your rights are documented and provable — not just on paper.

Agencies

Client documents, contractor agreements, internal approvals — tracked, searchable, accessible to the right people. Nothing gets lost between inboxes.

Design studios

Protect project authorship on plans and estimates. Lock in scope and copyright in a signed document before work starts.


Platform features

Real estate document tools built for professionals

Upload, negotiate, sign, and get paid. Chaindoc covers the full transaction without switching between tools.

Document upload

Upload contracts, deeds, lease agreements, and technical plans in any format. No more hunting through email attachments to find the right version.

Version history

Every edit creates a new version. You can see the full change history, compare any two drafts, and restore a previous version if needed. Nothing gets lost in email.

Inline comments

Negotiate terms directly inside the document. Agents, lawyers, and clients comment on specific clauses — no scattered notes in chat apps or emailing revised PDFs back and forth.

E-signatures

Collect legally valid e-signatures for purchase agreements, leases, and contracts remotely. Each signature comes with a certificate and a blockchain hash. Compliant with ESIGN, UETA, and eIDAS.

Payments

Accept deposits or full payments via Stripe or cryptocurrency, tied directly to the signed contract. Every transaction is logged in the document history.

Blockchain verification

Each document gets an immutable blockchain record with hash, authorship, and timestamp. If a dispute comes up, you have proof of exactly what was signed and when.


Common questions

Questions real estate professionals ask before getting started with Chaindoc.

Close your next real estate deal with Chaindoc

Upload documents, collect e-signatures, receive payments. Every signed document leaves a blockchain record — so there's no dispute later about what was agreed or when.

Guides and resources

Real estate transaction guides

Guides on digital signatures in real estate, lease renewal workflows, and what blockchain verification actually means for property ownership.