AuthenSeal

The cryptographic proof of authorship is reliable. Knowing the content is verified via SHA-256 gives confidence in the results.

The interface allows uploading files up to 100 MB, which is convenient for most standard documents. While the process is simple, the free tier restricts users to only three seals monthly. This limitation requires careful management if you need to certify multiple items regularly without subscribing to a paid plan immediately.

From the information available, AuthenSeal offers a free tier with only three full-featured seals per month forever. This limitation might be restrictive for anyone needing to certify more than a few documents initially. The business plan allows unlimited seals and batch processing, which seems necessary for regular use. It is not entirely clear if the free public verification page is included in the paid tiers or if that is an upgrade feature, though the text implies it is a core function. The pricing structure is transparent, listing the monthly costs clearly. However, for someone considering this company for ongoing media verification, the low free allowance means you will likely need to upgrade quickly. It would be wise to check if the API access on the desktop app covers your specific needs before committing to the creator or business subscriptions. The open standards like C2PA are a strong point, ensuring your certificates remain verifiable without them, which adds value to the paid options.

The verification workflow looks straightforward enough. Uploading a file and getting a timestamp seems simple. It is nice that no login is required for public checks.