Pith Number

pith:U356RLVD

pith:2009:U356RLVDSUBJBWABU5UZYYKS4X

not attested not anchored not stored refs pending

Precise measurement of HFS of positronium

A. Ishida, A. Yamamoto, G. Akimoto, H. Saito, I. Ogawa, K. Kato, K. Tanaka, M. Yoshida, S. Asai, S. Kobayashi, T. Idehara, T. Kobayashi, T. Namba, T. Suehara

arxiv:0912.4370 v1 · 2009-12-22 · hep-ex · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U356RLVDSUBJBWABU5UZYYKS4X}

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	2026-05-18T02:33:55.645043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6fbe8aea3950290d801a7699c6152e5f28f2b9f522bc583fef5cff495d39f1f

Aliases

arxiv: 0912.4370 · arxiv_version: 0912.4370v1 · doi: 10.48550/arxiv.0912.4370 · pith_short_12: U356RLVDSUBJ · pith_short_16: U356RLVDSUBJBWAB · pith_short_8: U356RLVD

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/U356RLVDSUBJBWABU5UZYYKS4X \
  | 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: a6fbe8aea3950290d801a7699c6152e5f28f2b9f522bc583fef5cff495d39f1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee80c0536e3ec82b28ee9f6e3348248a9fdaf3b221628a311ec342a43b3db993",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ex",
    "submitted_at": "2009-12-22T11:10:34Z",
    "title_canon_sha256": "a1ba3d532d1da8f8a40a6153aa7370bc286bc3d49e979cdc67c8fa8ebcdc9b55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4370",
    "kind": "arxiv",
    "version": 1
  }
}