# Development
* [Comparing X.509 Certificates with SSI](https://www.windley.com/archives/2021/05/comparing_x509_certificates_with_ssi.shtml) 2021-05 Phil Windley
  > X.509 certificates have been around for 40 years and have proven to be a trustworthy means of exchanging data. So, what are the differences between X.509 ceritificates and SSI? And what are the advantages of each?
* [resources] [Getting Started with Self Sovereign Identity SSI](https://damienbod.com/2021/03/29/getting-started-with-self-sovereign-identity-ssi/) 2021-03-29
  > The blog is my getting started with Self Sovereign identity. I plan to explore developing solutions using Self Sovereign Identities, the different services and evaluate some of the user cases in the next couple of blogs.
* [Bootstrapping a VDR-based Fully Decentralized Object (FDO)/Credential Platform: VON Example](https://hyperonomy.com/2021/07/26/bootstrapping-a-vdr-based-decentralized-credential-object-platform-von-example/) 2021-07-26 Hyperonomy
  > What are the common/known strategies for bootstrapping a VDR-based decentralized credential/object platform? …asked naively on purpose. Strategies for placing the first/initial DIDs in the VDR?  …presumably purposed to be the initial Issuer(s) of verifiable
* [Challenges to Self-Sovereign Identity](https://damienbod.com/2021/10/11/challenges-to-self-sovereign-identity/) 2021-10-11 Damien Bod
  > The article goes through some of the challenges we face when using or implementing identity, authentication and authorization solutions using self sovereign identity. I based my findings after implementing and testing solutions and wallets with the following SSI solution providers: Trinsic MATTR.global Evernym Azure Active Directory Verifiable Credentials Different Wallets like Lissi SSI
* [Video] [Self-Sovereign Identity (SSI) and Open Source – Richard Esplin from SSIMeetup](http://ssimeetup.org/self-sovereign-identity-ssi-open-source-richard-esplin-webinar-16/)