|
0 Feature |
1 AdaStamp |
4 HelloSign |
| Compliant with legal regulations and be accepted by courts | With QES device used | Yes |
| Integration with smart contracts | Yes | No |
| Signature visible in a document | Yes(M2) | Yes |
| Storage of documents | Yes | Yes |
| “Decentralized storage” | Yes | No |
| Sharing of documents | Yes | No |
| Notifications | Yes | Yes |
| Signing workflow | Yes | Yes |
| Document templates | Yes | No |
| Filling forms | Yes | No |
| Open-source solution | Yes | No |
| Long-term signatures | Yes | No |
It is the most advanced solution that includes integration with Dropbox (and thus allows to store signed documents), visible signatures, signing workflow and document templates. So this solution exceeds AdaStamp functionality. However, it is a proprietary solution of one commercial vendor, not yet integrated with any blockchain (the vendor performs some research in this direction, but it is not yet integrated within the product).