Life & fun · alternatives · 2026

24 alternatives to Blocknify

Sign sensitive documents without sacrificing your privacy.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Blocknify launched in 2018; newer entries below may have overtaken it.

1
Blockusign▲93
Secure Document Signing & Verification Powered by Blockchain
2018 · blockusign.co · its alternatives →
2
Blocksign, a Bitcoin service for legally signing any document▲17
Blockchain is a wonderful record keeper that can track every transaction that happens in the string.
2014 · blocksignit.com · its alternatives →
3
BlockSign▲79
Sign Your Docs Digitally Using Bitcoin
2014 · blocksignit.com · its alternatives →
4
signyourpdf▲12
Secure PDF signatures with blockchain. Fast & reliable.
2025 · signyourpdf.net · its alternatives →
5
DoxyChain▲60
Certificates and eSignatures on the blockchain
2023 · its alternatives →
6BT
btproof - trusted timestamping on the Bitcoin blockchain▲75
Find information, resources and relevant links for btproof.com. This domain may be for sale.
2013 · btproof.com · its alternatives →
7
Let's Seal – Let's Encrypt for document signing, free and self-hosted▲94
TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…
Jul 2026 · github.com · its alternatives →
8
SignSecure V2▲13
Freedom from fraud with secure and efficient e-signatures.
2025 · signsecure.io · its alternatives →
9
Stampd.io - A document blockchain stamping service▲32
Use the public blockchains to timestamp your files with indelible proof. Create non-fungible tokens (NFT) in Cardano.
2015 · stampd.io · its alternatives →
10
Proof.ink▲100
Proven immutable data stored on the Steem blockchain
2019 · proof.ink · its alternatives →
11
UsignDoc▲92
Simplify e-signing, secure your docs
2024 · its alternatives →
12
Inscribe▲112
A protocol for rich, verified signatures on any NFT
2021 · inscribe.so · its alternatives →
13
EtherSign▲3
Document signing on the blockchain! ✍️
2018 · ethersign.surge.sh · its alternatives →
14
Reblo▲71
Provides document immutability and security using blockchain
2023 · reblo-services.com · its alternatives →
15
Woleet▲73
Bitcoin-anchored proof that documents are authentic
May 2026 · woleet.io · its alternatives →
16
Zombie Delete▲89
Docusign for provable deletion - anywhere, everywhere.
Apr 2026 · zombiedelete.com · its alternatives →
17
Stampery for iOS▲104
Certify voice notes, photos or files using the Blockchain
2015 · apps.apple.com · its alternatives →
18
BlockDoc▲78
Decentralized secure documents manager with private sharing
2019 · its alternatives →
19
SendSecurely.io▲89
Permissioned and auditable secure file and document sharing
2023 · sendsecurely.io · its alternatives →
20
Copyright Registration - SecureAuthor▲20
Protect & prove your creations with SecureAuthor
2025 · secureauthor.com · its alternatives →
21
SignRequest – Electronic Signatures for everyone▲42
Sign yourself or get documents signed. Easy, secure, legally binding and free.
2017 · signrequest.com · its alternatives →
22
UVerify▲3
Records tamper-proof fingerprints on the Cardano blockchain
May 2026 · uverify.io · its alternatives →
23
XSigi▲7
Blockchain-secured signatures and encryption made simple.
2025 · its alternatives →
24
NoteChain▲12
Decentralized encrypted notes
2025 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →