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What is ProofSign?

ProofSign is an innovative platform that facilitates electronic signatures and document verification, tailored for individuals, professionals, teams, and organizations that require signing of finalized PDF documents. Users can seamlessly upload their files, invite signers and approvers, and manage workflows that can involve either single or multiple participants. For enhanced security, all involved parties must verify their email access through a one-time passcode. The platform carefully tracks signing intentions, participant actions, and timestamps, creating a detailed audit trail for accountability purposes. Each finalized PDF is embedded with a SHA-256 fingerprint, enabling recipients to confirm its authenticity through a public verifier without needing to create an account. This service proves to be especially valuable for agreements and finalized documents that necessitate an auditable signing record, as well as for identifying any alterations made to the files post-signing. A free plan is offered, allowing single-party signing and verification of up to 10 documents monthly, adhering to fair use policies. Users can also earn credits by completing onboarding tasks and reaching signing milestones, further enhancing their experience. The Pro plan includes advanced functionalities such as a verification API, expanding the platform's features for professional users. Thus, ProofSign emerges as a comprehensive solution for secure document management and signature verification, ensuring that all parties can maintain trust and integrity in their digital transactions. Furthermore, its user-friendly interface makes it accessible to a wide range of users, fostering a smoother signing experience.

What is Blocknotary?

Blockchain technology offers a reliable method for timestamping media files, ensuring verification of ownership, integrity, and existence across mobile platforms. BlockNotary Timestamp uniquely notarizes any media file, generating a publicly accessible receipt that confirms its origin, date, authenticity, and integrity, while maintaining the confidentiality of the content. This innovative technology serves a variety of functions, such as digital attribution, proof of existence, prior knowledge verification, integrity assurance, and establishing authenticity. The process of timestamping incorporates OTS (OpenTimestamps), IPFS (InterPlanetary File System), and widely recognized public blockchains like Bitcoin and Ethereum to produce proofs that are entirely decentralized. The receipts produced are not only verifiable by independent parties but are also designed with machine readability in mind, increasing their practicality. Users can conveniently upload their media files to the application, which guarantees secure storage within a distributed file system reinforced by blockchain technology. By adopting this cutting-edge approach, the protection of media assets is enhanced, fundamentally transforming the way digital ownership and authenticity are preserved in an ever-evolving digital landscape. This shift towards a more secure and transparent method of verifying media files is likely to have lasting implications for various industries reliant on digital content.

Media

Media

Integrations Supported

Additional information not provided

Integrations Supported

Additional information not provided

API Availability

Has API

API Availability

Pricing Information

£0/month
The Free plan costs £0 and includes single-party signing and verification for up to 10 documents per month under fair use. Multi-party workflows and higher-volume use require credits. The Standard plan costs £6/month and includes 250 credits per month. The Pro plan costs £18/month and includes 900 credits per month plus verification API access. Annual billing is 20% off. One-time credit packs cost £10 for 100 credits, £25 for 300 credits or £75 for 1,000 credits; they do not expire and do not include subscription features. Users can earn up to 225 additional credits through identity-verification and signing milestones.
Free Version

Pricing Information

Pricing not provided

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Not specified

Company Facts

Organization Name

ProofSign

Date Founded

2025

Company Location

United Kingdom

Company Website

www.proofsign.app/

Company Facts

Organization Name

Blocknotary

Company Website

www.blocknotary.com

Categories and Features

Digital Signature

Not specified

Categories and Features

Blockchain

Not specified

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