Question: I need a way to sign documents digitally and add a timestamp, do you know of any platforms that can do this?

If you want a service to digitally sign documents and attach a timestamp, Docusign is a mature option. It's got a broad range of tools, including eSignature, Electronic Notarization and AI tools to try to make the agreement process easier. Docusign integrates with a lot of other software and has flexible pricing tiers, so it's good for small and large businesses.

Another strong option is Acrobat Sign, which is part of Adobe Acrobat. It streamlines workflows by letting people gather signatures without downloads and keep tabs on documents with real-time visibility. Acrobat Sign also lets you send documents in bulk, add your own branding and integrate with other Adobe tools, making it a good option for individuals and companies.

If you're looking for something more specialized, check out ArkSigner. The service offers instant signing, mobile signing and multi-signature support, as well as tools like AI-assisted biometric identity verification and timestamping. ArkSigner is geared for companies looking to modernize their digital signing and identity verification processes securely and efficiently.

Last, Foxit offers a full-featured digital document service with e-signatures, native integration with other software and AI tools to help you manage documents. Foxit's eSign Business feature is designed for enterprise-class security and compliance, so it's a good option for companies that need e-signature services that can grow with their business.