Pith Number

pith:SQ7SVM2H

pith:2003:SQ7SVM2HIREOWNA2LY3CMICJ3G

not attested not anchored not stored refs pending

Laser Spectroscopic Measurement of Helium Isotope Ratios

L.-B. Wang, N. C. Sturchio, P. Mueller, R. J. Holt, T. P. O'Connor, Y. Sano, Z.-T. Lu

arxiv:physics/0311121 v1 · 2003-11-25 · physics.atom-ph · physics.geo-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{SQ7SVM2HIREOWNA2LY3CMICJ3G}

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	2026-05-18T01:38:08.616484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

943f2ab3474448eb341a5e36262049d9b3d8e32e25e379737ebf46f011edec17

Aliases

arxiv: physics/0311121 · arxiv_version: physics/0311121v1 · doi: 10.48550/arxiv.physics/0311121 · pith_short_12: SQ7SVM2HIREO · pith_short_16: SQ7SVM2HIREOWNA2 · pith_short_8: SQ7SVM2H

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/SQ7SVM2HIREOWNA2LY3CMICJ3G \
  | 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: 943f2ab3474448eb341a5e36262049d9b3d8e32e25e379737ebf46f011edec17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21f0f05962cd4ce08c925e90e56f0e7baee48154291600ad8641152cec88e8f5",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2003-11-25T17:27:16Z",
    "title_canon_sha256": "3f3a3ac0c738d34047d98e9ae25b51656f041e89dfc07bffeb52d41d12099fa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0311121",
    "kind": "arxiv",
    "version": 1
  }
}