Tamga Docs

English

Türkçe

English

Türkçe

Appearance

Federation ​

Tamga Network is not one list run from one centre. Each country keeps its own institutions in its own güven listesi (trust list)Bir ülkenin kök sertifikalarını, belge verenlerini ve kayıtlı relying party'lerini taşıyan imzalı liste. Bugün Tamga'da güven bu listelere dayanır; ortak defter sonra gelir.; Tamga brings these lists together and introduces them to each other. This model is called a federasyon (federation)Her ülkenin kendi güven listesini işlettiği ve listelerin listesinde birleştiği model; Tamga dış listeleri de gösterebilir. (ADR-0035).

One anchor, many lists ​

The wallet and the verifier know only one thing in advance: the fingerprint of the root that signs Tamga's list of trusted lists (LOTL (List of Trusted Lists)Ülke güven listelerinin adreslerini, imzacılarını ve tanınma durumlarını gösteren imzalı liste.). The LOTL tells them the rest:

                     Tamga LOTL (root fingerprint pinned in the app)
                ┌──────────────┼──────────────────────┐
                ▼              ▼                      ▼
        Türkiye list      another member state   external list (e.g. the EU's
        (Tamga format)    (reserved)             wallet providers, ETSI)
           │                                          │
   issuers, verifiers,                       only the roles and credential
   root certificates                         types in its scope
  • National lists are in the Tamga format; they hold that country's issuersBelgeyi imzalayıp veren kurum: üniversite, meslek kuruluşu, kamu kurumu ya da şirket., verifiersGösterilen belgeyi denetleyen taraf: imza, belge verenin güven listesindeki kaydı, durum ve politika. Relying party diye de anılır. and root certificates.
  • External lists are countries' or the EU's own lists in the ETSI format (LoTE (List of Trusted Entities)ETSI TS 119 602 liste biçimi; Tamga listelerinin LoTE görünümünü yayınlar ve dış LoTE listelerini okuyabilir.). The LOTL records their address, their signer and what they may vouch for (the scope) (ADR-0036).

Why federation? ​

QuestionAnswer
Who recognises an institution?Its own country. Tamga does not decide in a country's place; what it does for Türkiye today on the state's behalf can be handed over.
Is another country's credential accepted?Yes, if the country recognises that country (mutual recognition; step C3 in verification).
Can an EU wallet receive credentials from a Tamga institution?Yes, once an external list that vouches for that wallet's provider has been added to the LOTL.
What if a list breaks?Only questions that depend on that list answer "unknown"; the other lists are not affected.

The scope limit ​

An external list can vouch only for the work in its own scope. For example, a list that vouches only for identity providers cannot add an institution that issues diplomas; such an entry is ignored. There is no external list in the LOTL today; each addition is a separate approval.

Hand-over ​

Today Tamga runs the Türkiye list, the registrar and the root certificate on the state's behalf. When the state takes these roles over, only the address and the signer change for wallets and verifiers; institution identifiers and issued credentials stay valid.

Later: a shared ledger ​

Once at least two independent operators take part, the same entries can move to a permissioned ortak defter (ledger)Güven kayıtlarının birden çok bağımsız işletmeci tarafından birlikte tutulduğu kayıt (izinli bir blockchain). Tamga onu en az iki bağımsız işletmeci katıldığında ekler; o güne kadar işi imzalı güven listeleri görür. (ADR-0009). The reading interface (TrustSource) stays the same; applications do not change.

More ​