Pith Number

pith:LAPQPQCG

pith:2017:LAPQPQCGF3S5VMBURGOAHGK6DQ

not attested not anchored not stored refs pending

Toward a determination of the proton-electron mass ratio from the Lamb-dip measurement of HD

A.-W. Liu, J. Komasa, J. Wang, K. Pachucki, L.-G. Tao, S.-M. Hu, Y. R. Sun

arxiv:1712.08705 v1 · 2017-12-23 · 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{LAPQPQCGF3S5VMBURGOAHGK6DQ}

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	2026-05-18T00:18:14.270509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

581f07c0462ee5dab034899c03995e1c084e66be66c8fc238efde2d2336c7261

Aliases

arxiv: 1712.08705 · arxiv_version: 1712.08705v1 · doi: 10.48550/arxiv.1712.08705 · pith_short_12: LAPQPQCGF3S5 · pith_short_16: LAPQPQCGF3S5VMBU · pith_short_8: LAPQPQCG

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/LAPQPQCGF3S5VMBURGOAHGK6DQ \
  | 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: 581f07c0462ee5dab034899c03995e1c084e66be66c8fc238efde2d2336c7261

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee3efcc7629733c98c1ba73f50dc791531ced86f420a4031f999409caa6f91d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2017-12-23T03:02:24Z",
    "title_canon_sha256": "9e504aa78c61144573fc0ba87f1adf7d0d46227a3291484940a0cf25f95e2723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08705",
    "kind": "arxiv",
    "version": 1
  }
}