Pith Number

pith:SPUF7PW5

pith:2015:SPUF7PW5SAFTAYTYOQ5Z5VDW2Z

not attested not anchored not stored refs pending

Test of the theoretical hyperfine structure of the molecular hydrogen ion at the 1-ppm level

Jean-Philippe Karr, Jeroen C.J. Koelemeij, Laurent Hilico, Vladimir I. Korobov

arxiv:1510.05206 v1 · 2015-10-18 · 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{SPUF7PW5SAFTAYTYOQ5Z5VDW2Z}

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	2026-05-18T00:41:13.163512Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93e85fbedd900b306278743b9ed476d662bda76bbbb6e545fb2799865cd96590

Aliases

arxiv: 1510.05206 · arxiv_version: 1510.05206v1 · doi: 10.48550/arxiv.1510.05206 · pith_short_12: SPUF7PW5SAFT · pith_short_16: SPUF7PW5SAFTAYTY · pith_short_8: SPUF7PW5

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/SPUF7PW5SAFTAYTYOQ5Z5VDW2Z \
  | 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: 93e85fbedd900b306278743b9ed476d662bda76bbbb6e545fb2799865cd96590

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49030809d79757474390e94f9240467389843d036acf3603ffbcf4991e36bd48",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-10-18T07:41:59Z",
    "title_canon_sha256": "0cb8fe0120855769219c58e00a423bca69d8e7c66ab56a7efb5490290aed63fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.05206",
    "kind": "arxiv",
    "version": 1
  }
}