Pith Number

pith:PE4F2RDI

pith:2026:PE4F2RDIMGUDEROYUQMPHY4NLY

not attested not anchored not stored refs pending

Optical cycling on thorium monoxide (ThO) for an improved test of fundamental symmetries

Alexander Frenett, Dorothy Gan, Monika Fouad, Nicholas Emtage, Sebastian Miki-Silva

arxiv:2605.28509 v1 · 2026-05-27 · physics.atom-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PE4F2RDIMGUDEROYUQMPHY4NLY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-28T02:04:55.034388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79385d446861a83245d8a418f3e38d5e269e588badaabd475a772be5156f3778

Aliases

arxiv: 2605.28509 · arxiv_version: 2605.28509v1 · doi: 10.48550/arxiv.2605.28509 · pith_short_12: PE4F2RDIMGUD · pith_short_16: PE4F2RDIMGUDEROY · pith_short_8: PE4F2RDI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/PE4F2RDIMGUDEROYUQMPHY4NLY \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 79385d446861a83245d8a418f3e38d5e269e588badaabd475a772be5156f3778

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6803ad7b37c8b30fe0309d0e84a248ea237c6dc1c706162a439c88c9a69177cb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2026-05-27T14:11:27Z",
    "title_canon_sha256": "96fc2c4f4ccd5be4f146c071263fcdc6877899f086172240f40f623d117a8223"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28509",
    "kind": "arxiv",
    "version": 1
  }
}