# The first Codex Justinianus is promulgated

Date: 529

## The fact

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 Older collections (Gregorian, Hermogenian, Theodosian) were superseded as the working statute book.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. Later museums, UNESCO lists, Loeb editions, and translations are not this Fact. Tribonian, Belisarius, Narses, John the Cappadocian, and unnamed officials may share the file; they do not erase a dated constitution, and they are not a licence to treat every general’s siege as the emperor’s javelin.

## Context

Legal uncertainty among overlapping constitutions was an administrative complaint. John the Cappadocian sat on the first commission; Tribonian dominated later work. Later museums, UNESCO lists, Loeb editions, and translations are not this Fact. Tribonian, Belisarius, Narses, John the Cappadocian, and unnamed officials may share the file; they do not erase a dated constitution, and they are not a licence to treat every general’s siege as the emperor’s javelin.

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

## Evidence and sources

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. Later museums, UNESCO lists, Loeb editions, and translations are not this Fact. Tribonian, Belisarius, Narses, John the Cappadocian, and unnamed officials may share the file; they do not erase a dated constitution, and they are not a licence to treat every general’s siege as the emperor’s javelin.

Official or archival record: Codex Justinianus, English of S. P. Scott (Grenoble Roman-law carrier) (https://droitromain.univ-grenoble-alpes.fr/Anglica/codjust_Scott.htm; Université Grenoble Alpes / droitromain).

## Significance

Improving data-and-legal-publicity path of high weight for a sixth-century state. Direct contribution. High confidence on promulgation. Later civilian reception is not a lifetime UNESCO act. Later museums, UNESCO lists, Loeb editions, and translations are not this Fact. Tribonian, Belisarius, Narses, John the Cappadocian, and unnamed officials may share the file; they do not erase a dated constitution, and they are not a licence to treat every general’s siege as the emperor’s javelin.

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

## What is established and what is not

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. Later museums, UNESCO lists, Loeb editions, and translations are not this Fact. Tribonian, Belisarius, Narses, John the Cappadocian, and unnamed officials may share the file; they do not erase a dated constitution, and they are not a licence to treat every general’s siege as the emperor’s javelin.

The contribution type is direct. The attached driver is [personal-data-protection](/drivers/personal-data-protection). The welfare reading used in this dossier is improving. 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. Do not twin 529 with the 534 Codex repetitae praelectionis. Do not twin Codex with Digest or Institutes. 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.

## People

- Justinian I: https://factrail.ai/people/justinian-i

## Drivers

- Personal-Data Protection: https://factrail.ai/drivers/personal-data-protection

## Sources

- https://www.britannica.com/biography/Justinian-I
- https://droitromain.univ-grenoble-alpes.fr/Anglica/codjust_Scott.htm

## Methodology

https://factrail.ai/methodology

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