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The first Codex Justinianus is promulgated

On 7 April 529 Justinian promulgated the first Codex, an exclusive compilation of imperial constitutions, after a commission appointed in 528. In the causal graph this event strengthens the driver Personal-Data Protection.

Sources: [1][2]

Read the full account

On 7 April 529 Justinian promulgated the first Codex, an exclusive compilation of imperial constitutions, after a commission appointed in 528. Older collections (Gregorian, Hermogenian, Theodosian) were superseded as the working statute book. This is the Codex, not the Digest of 533 and not the Institutes.

Context

Legal uncertainty among overlapping constitutions was an administrative complaint. John the Cappadocian sat on the first commission; Tribonian dominated later work.

If a number is not in the two records named above, it is not supplied here.

Why it matters

Direct contribution. High confidence on promulgation. Later civilian reception is not a lifetime UNESCO act.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Justinian I

    Person

    Direct responsibility

    responsibility level 0.6 · verified

    He ordered a commission under John of Cappadocia (later Tribonian) to compile imperial constitutions and promulgated the Codex.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactThe first Codex Justinianus is promulgated
    2. strengthensDriverPersonal-Data Protection

    impact weight 0.55 · Effect from 7 April 529 · verified

    A published, exclusive collection of imperial constitutions increased legal publicity and copyability of state law.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Britannica — Justinian IEncyclopaedia Britannica · High credibility · verified
  2. 2.Codex Justinianus, English of S. P. Scott (Grenoble Roman-law carrier)Université Grenoble Alpes / droitromain · High credibility · verified
What the sources establish

Scott’s English of the Codex is a public carrier of the compiled constitutions. Britannica independently dates the 529 promulgation. Constitutio Summa/Haec tradition is the formal preface. Dumbarton Oaks research independently treats the Corpus as Justinianic state law.

Established: a Codex of imperial constitutions was promulgated in 529 under Justinian. Not established: that every constitution in Scott is an autograph of 529, or that the 534 recension is a different campaign.

The contribution type is direct. That reading is an impact-path choice, not a property stored on the Fact itself.

Confidence is stated on the impact path, not hidden in adjectives. Mixed effects of The first Codex Justinianus is promulgated are separate paths.

Shared responsibility is part of The first Codex Justinianus is promulgated. Naming Justinian I does not delete co-authors, institutions, or later transmitters. The lag from 0529-04-07 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorJustinian I
  2. contributed toFactThe first Codex Justinianus is promulgated
  3. strengthensDriverPersonal-Data Protection

Cite this page

Factrail. (2026). The first Codex Justinianus is promulgated. Factrail. https://factrail.ai/facts/er-justinian-codex-0529

https://factrail.ai/facts/er-justinian-codex-0529

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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