The canonical register: Oṃ

Evidence dossier 189 — Oṃ. Every exhibit catalogued, every ruling stated with its grounds.

At a Glance

• Canonical form: Oṃ
• Original script: ओं
• Pantheon: Sanskrit
• Convention: IAST — macrons for long vowels, underdots for retroflexes, the International Alphabet of Sanskrit Transliteration
• False forms on record: 1
• Contested forms: 1
• Series: The Canonical Register, No. 189 of 287

The Evidence

Exhibit 1 — the attestation. The attested form is ओं, from the tradition's own record. The canonical transliteration is Oṃ.

Exhibit 2 — the flattened form. The plain form om is not false — it is a fallback, and the register is exact about what that means. In systems that cannot carry diacritics (legacy databases, older tooling, parts of the address-bar pipeline) the flattened form is the accepted vehicle, and the rulebook names it explicitly as the final rung of the fallback hierarchy: full restoration first, circumflex where attested, macron-only by the academic standard, an attested variant, and only then plain ASCII.

What the fallback status forbids is promotion: om may carry the name where marks are impossible, but it may not represent the name where marks are possible. A fallback is a vehicle, never the primary.

Exhibit 3 — struck from the record: Om. Origin: the publisher compromise — older books and hurried websites that print the "English equivalent" as if it were the name itself. Grounds: every substitution here (ṃ→m) is a romanization of convenience, not an attested spelling — it teaches the reader to guess, not to read.

Exhibit 4 — forms with legitimate standing. Oṁ (Popular transliteration of Om with raised anusvara dot; support: MW). Recorded with their grounds; none displaces the canonical primary.

Exhibit 5 — the physical record. The earliest attestation of Oṃ in writing appears in late Vedic and early Upaniṣadic manuscripts, though its oral use is far older. The syllable appears on early Hindu, Buddhist, and Jain inscriptions across the subcontinent, including Kushan-period coins and Gandhāran reliquaries. Medieval temple inscriptions and Tantric manuscripts regularly open with Oṃ, and the glyph is carved above doorways, on steles, and in the colophons of Sanskrit texts from Nepal to Tamil Nadu.

Exhibit 6 — the continuing record. Oṃ is arguably the most widely recognized sacred sound on Earth. It opens Hindu prayers, Buddhist chants, and yoga classes on every continent.

The Convention's Own History

Long before IAST was formalized in 1912, Sanskrit had Pāṇini — the fourth-century-BCE grammarian whose rules describe the language's sounds with a precision no other ancient tradition matched. That heritage is why the convention is so exact: retroflexes (ṭ, ḍ, ṇ, ṣ) are not accented dentals but separate phonemes with separate meanings; long and short vowels (ā/a, ī/i, ū/u) change words, not just timing. IAST writes those distinctions down with underdots and macrons so that a reader who has never heard Sanskrit can still read it correctly. Dropping the marks is not transliteration at a lower resolution — it is a different, lesser claim.

The Protocol's Position

Can the canonical form live in the address bar? Almost always, yes. IDNA 2008 admits every mark this register defends — the DNS stores them as `xn--` punycode and modern browsers render them natively. The real frictions are practical, not legal: some registrars stock only part of the IDN space, so a theoretically valid name can be temporarily unbuyable; and stacked combinations (an acute riding a macron) remain awkward to type on mobile keyboards even where the protocol accepts them.

The project's answer is a ranked ladder, not a compromise: the full restoration first, then attested fallbacks in descending order of completeness. The ladder's lowest rung, plain ASCII, is a vehicle for legacy systems — sanctioned, but never presented as the scholarly form.

The Verdict

Case closed on Oṃ: canonical, cited, and defended. The keyboard form om rides as the sanctioned fallback — and stays in that lane. The register's files remain open: if a source surfaces that changes any line of this entry, the entry changes. Until then, the temple at /sites/om/ holds the canonical form.

The docket for this ruling: 1 false form ruled against, Om first on the docket; 1 contested form recorded with its support; the attestation rests on 8 cited sources — Māṇḍūkya Upaniṣad (the four pādas of Oṃ), Taittirīya Upaniṣad 1.8 (Oṃ as the essence of the Vedas), Chāndogya Upaniṣad 1.1 (the udgītha and the syllable oṃ).

The Register Continues

This is one of 287 entries in the Canonical Register — the authoritative reference for every flagship temple. The temple's founding dispatch tells the name's story; its Restoration File details the marks; its Resonance File reads the archetype into the industries. The blog index holds the whole archive, and the Rulebook states the convention this register enforces.

Continue the register — previous entry: Ólympos (read it) · next entry: Orpheús (read it).

The Canonical Register is written from the same canonical record as the lexicon itself. If a false form is missing from this page, it is because the evidence does not support calling it false — or because we have not seen it yet. Show us, with a citation, and the register will answer.