Pith Number

pith:LXDRUS32

pith:2015:LXDRUS32QEJEQREF266LH4RMP3

not attested not anchored not stored refs pending

Theory of the helium isotope shift

Krzysztof Pachucki, Vladimir A. Yerokhin

arxiv:1503.07727 v2 · 2015-03-26 · 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{LXDRUS32QEJEQREF266LH4RMP3}

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	2026-05-18T01:32:08.112996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5dc71a4b7a8112484485d7bcb3f22c7ee9d8ace8ca8af924d8bc294ba6df0852

Aliases

arxiv: 1503.07727 · arxiv_version: 1503.07727v2 · doi: 10.48550/arxiv.1503.07727 · pith_short_12: LXDRUS32QEJE · pith_short_16: LXDRUS32QEJEQREF · pith_short_8: LXDRUS32

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/LXDRUS32QEJEQREF266LH4RMP3 \
  | 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: 5dc71a4b7a8112484485d7bcb3f22c7ee9d8ace8ca8af924d8bc294ba6df0852

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2223b43a2eaf48ad36ebbf55b4d4b669620d24a9f8031bff57fcb0b96b8af9ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-03-26T13:20:57Z",
    "title_canon_sha256": "05e128bcc9f3ecb5924d296f38f845c4e4c17db22c8dfac9022af5c786329a42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07727",
    "kind": "arxiv",
    "version": 2
  }
}