Pith Number

pith:NW4CUJFP

pith:2009:NW4CUJFP56AK32ITUTWGVJGRMH

not attested not anchored not stored refs pending

Neutrino mass limit from tritium beta decay

C. Weinheimer, E. W. Otten

arxiv:0909.2104 v1 · 2009-09-11 · hep-ex · nucl-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NW4CUJFP56AK32ITUTWGVJGRMH}

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	2026-05-18T04:21:30.123401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6db82a24afef80ade913a4ec6aa4d161c76f3b2d781dae10ae6253565db62847

Aliases

arxiv: 0909.2104 · arxiv_version: 0909.2104v1 · doi: 10.48550/arxiv.0909.2104 · pith_short_12: NW4CUJFP56AK · pith_short_16: NW4CUJFP56AK32IT · pith_short_8: NW4CUJFP

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/NW4CUJFP56AK32ITUTWGVJGRMH \
  | 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: 6db82a24afef80ade913a4ec6aa4d161c76f3b2d781dae10ae6253565db62847

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8ce7799f2826ed762bea5c364b3a597c9a07c3408210d672e1bd2c0af96e8a3",
    "cross_cats_sorted": [
      "nucl-ex"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ex",
    "submitted_at": "2009-09-11T07:45:39Z",
    "title_canon_sha256": "ce403415b43b51a64ff129cd197a7352882093bfcd13d0a3fcefb7435fda1ff8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2104",
    "kind": "arxiv",
    "version": 1
  }
}