Sites and apps similar to Factflew include Proof of existence, which is free and open source. Other options are Woleet, ETcH and OriginStamp.com. In total there are four sites and apps like Factflew for Mac, Windows, Linux, Android and self-hosting.
Allows to certify a document ( of any format ? ), it gives a fingerprint relative to the date of the certification and it is stored in an online "Bitcoin blockchain". It can also verify the integrity of a document.
Blockchain timestamping and certification Software as a Service , SaaS. Woleet offers a BaaS (Blockchain as a service) platform with the following features :.
ETcH anchors the SHA-256 hash of your file on Ethereum mainnet, creating permanent, tamper-proof proof that your document existed at a specific date. No crypto wallet, no signup required — just drop your file, pay €2 via Stripe, and receive a self-contained proof kit ZIP...
Wherever data is generated, with OriginStamp you can get it automatically timestamped to prove its integrity and time of existence.
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