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2020-01-07 Blockcerts Open Standard for Blockchain Certificates Blockcerts is an open standard for building apps that issue and verify blockchain-based official records. These may include certificates for civic records, academic credentials, professional licenses, workforce development, and more. Blockcerts consists of open-source libraries, tools, and mobile apps enabling a decentralized, standards-based, recipient-centric ecosystem, enabling trustless verification through blockchain technologies.
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Web Standards
Bitcoin
Learning Machine
BTCR
Verifiable Credentials
JSON-LD
Ethereum
Blockcerts
Rebooting WoT
DHS
DID
2021-04-14

Learning Machine

The Digital Identity Problem Space

A framework for organizing the categories of digital identity and an analysis of where disruptive innovation is most likely to succeed.

Blockcerts

  • Blockcerts - Forum - Github - Twitter

    open standard for issuing and verifying blockchain-based official records; The project offers open-source libraries, tools, and mobile apps. MIT has issued digital certificates based on this standard.

  • Introduction

    Blockcerts is an open standard for building apps that issue and verify blockchain-based official records. These may include certificates for civic records, academic credentials, professional licenses, workforce development, and more.

    Blockcerts consists of open-source libraries, tools, and mobile apps enabling a decentralized, standards-based, recipient-centric ecosystem, enabling trustless verification through blockchain technologies.

    Blockcerts uses and encourages consolidation on open standards. Blockcerts is committed to self-sovereign identity of all participants, and enabling recipient control of their claims through easy-to-use tools such as the certificate wallet (mobile app). Blockcerts is also committed to availability of credentials, without single points of failure.

![]({{ site.baseurl }}/images/blockcerts.webp)

  • Academic Credentialing and the Blockchain
  • Blockcerts — An Open Infrastructure for Academic Credentials on the Blockchain
  • Top 10 Reasons to Use Blockcerts

    The open standard for issuing blockchain-based records is your easiest bet for creating records that remain verifiable for a lifetime.

  • A Decentralized Approach to Blockcerts Credential Revocation

    The initial release of the Blockcerts standard and reference implementation described only one revocation mechanism, the issuer-hosted revocation list approach also used by Open Badges. This has known limitations, including: centralization, single point of failure, and inability for a recipient to revoke. Other approaches to revocation were considered, but none were technically or economically feasible at the time given the project goals, including Bitcoin blockchain anchoring, low overhead, and minimal cost.

  • Future Proof

    Learning Machine is proud to announce that we have won Phase-1 funding for our response to the open call “Preventing Forgery & Counterfeiting of Certificates and Licenses through the use of Blockchain and Distributed Ledger Technology.” [...] The open-source reference implementation, targeted for 2020, will include:

    • Updating the Blockcerts schema to a Verifiable Credentials-based format
    • Updating the Blockcerts signature/verification scheme to conform to the latest JSON-LD signature suite format
    • Updating Blockcerts credential issuance and verification
    • Incorporating a cost-efficient DID method for issuers
  • Blockcerts V3 Proposal - Verifiable Credentials & Decentralized Identifiers - Forum - GitHub

    The purpose of this paper is to identify all of the changes needed for Blockcerts to comply with the Verifable Credentials (VCs) and Decentralized Identifers (DIDs) standards and to expand upon the additional benefits of using a blockchain in combination with Verifiable Credentials. This paper is meant to act as an explainer in which a formal specification can be created.

Open Badges

  • Badges and Blockcerts

    In education and workforce development, it’s important to understand the differences between digital credential formats and how to combine them for greatest impact. ... 2011 saw the birth of Open Badges, which digitally and visually convey the achievement of a specific skill. Similar to the Scouts movement, which uses a small fabric symbol to represent specific achievements, digital badges were designed to convey a singular achievement through a digital image and a hosted set of data. Initially spearheaded by the Mozilla Foundation, the Open Badges standard is now maintained by the IMS Global Learning Consortium, ensuring interoperability between platforms. ... In response to the desire for high-stakes credentials in a digital format, the development of Blockcerts began in 2015 as part of a project by the MIT Media Lab.

  • Open Badges are Verifable Credentials

    The Blockcerts Open Badges Draft Extension introduced a verifcation method based on those used by Verifable Credentials for the specifc use case of blockchain-anchored credentials. This paper expands that work and proposes a new option that can reside alongside existing Open Badges verifcation methods.

  • OPEN BADGES ON THE BLOCKCHAIN

    This document gives an overview of the status, interesting companies and people regarding Verifiable Open Badges on the Blockchain.

![]({{ site.baseurl }}/images/blockcerts.webp)

Literature

  • Healthcare and Digital Credentials: Technical, Legal, and Regulatory Considerations
  • Security analysis of a blockchain-based protocol forthe certification of academic credentials by Marco Baldi, Franco Chiaraluce, Migelan Kodra and Luca Spalazzi

    Abstract—We consider a blockchain-based protocol forthe certification of academic credentials named Blockcerts,which is currently used worldwide for validating digitalcertificates of competence compliant with the Open Badgesstandard. We study the certification steps that are per-formed by the Blockcerts protocol to validate a certificate,and find that they are vulnerable to a certain typeof impersonation attacks. More in detail, authenticationof the issuing institution is performed by retrieving anunauthenticated issuer profile online, and comparing somedata reported there with those included in the issuedcertificate. We show that, by fabricating a fake issuerprofile and generating a suitably altered certificate, anattacker is able to impersonate a legitimate issuer andcan produce certificates that cannot be distinguished fromoriginals by the Blockcerts validation procedure. We alsopropose some possible countermeasures against an attackof this type, which require the use of a classic public keyinfrastructure or a decentralized identity system integratedwith the Blockcerts protocol.

Blockcerts: The Open Standard for Blockchain Credentials - SSI-Meetup – Webinar 39

Adoption

Cowcerts

{% include video id="3UvDv7OXsFs" provider="youtube" %}

GitHub Repositories

Issuing

Validation

Verification

Web

Mobile