The Rosetta Stone
Three scripts, one decree — and the key to fourteen centuries of silenced writing.
Two languages, three scripts; Champollion’s 1822 breakthrough was part of a longer decipherment.
Trilingual Viewer
Toggle between the three scripts to see how Champollion lined up the cartouche of "Ptolemy" across them. Track B exhibit — visualization rather than encryption.
Why This Matters
Knowledge of hieroglyphic writing declined in late antiquity. The Rosetta Stone helped its later decipherment because it preserves a decree in two languages, Egyptian and Greek, using three scripts: hieroglyphic, demotic and Greek. It is a multilingual inscription, not an encrypted message.
The stone is a priestly decree affirming the cult of Ptolemy V Epiphanes, issued in 196 BCE. Copies were placed in major temples; the surviving fragment was found in 1799 at Rashid (anglicized "Rosetta") by French soldiers building a fort during Napoleon's Egyptian campaign. After the British defeat of the French, the stone passed to the British Museum, where it has been on near-continuous display since 1802.
Thomas Young identified important phonetic values in royal names. In 1822 Jean-François Champollion showed that phonetic writing was not confined to foreign names: it also helped explain native Egyptian names. His knowledge of Coptic was central to understanding a writing system combining phonetic signs with other kinds of signs.
The parallel texts helped scholars relate known content to unfamiliar writing. This resembles the usefulness of a crib in historical cryptanalysis, but translation and script decipherment are not encryption. Modern encryption is designed to resist known-plaintext attacks; publishing some plaintext does not automatically compromise unrelated encrypted messages.
| Hall | I · World Origins |
| Issued | 196 BCE |
| Found | 1799 CE |
| Decoded | 1822 CE |
| Decoder | J.-F. Champollion |
| Method | Two languages, three scripts |
| Modern echo | Bletchley cribs vs Enigma |
| Track | B (visualization) |