Pith Number

pith:V5XLTY7J

pith:2018:V5XLTY7JQHAK7VVP4MIHYWHDZH

not attested not anchored not stored refs pending

First search for invisible decays of ortho-positronium confined in a vacuum cavity

A. Rubbia, C. Vigo, L. Gerchow, L. Liszkay, P. Crivelli

arxiv:1803.05744 v2 · 2018-03-15 · 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{V5XLTY7JQHAK7VVP4MIHYWHDZH}

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	2026-05-18T00:14:08.149949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af6eb9e3e981c0afd6afe3107c58e3c9f6ea4dc9830e6837e40950f9629a2323

Aliases

arxiv: 1803.05744 · arxiv_version: 1803.05744v2 · doi: 10.48550/arxiv.1803.05744 · pith_short_12: V5XLTY7JQHAK · pith_short_16: V5XLTY7JQHAK7VVP · pith_short_8: V5XLTY7J

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/V5XLTY7JQHAK7VVP4MIHYWHDZH \
  | 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: af6eb9e3e981c0afd6afe3107c58e3c9f6ea4dc9830e6837e40950f9629a2323

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebf62782a367d3acaa56ffbfccebc657f59fc0b30e36e94eb77a89e376e4fae6",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ex",
    "submitted_at": "2018-03-15T13:39:41Z",
    "title_canon_sha256": "c3b31f16a605ec5642d82b09b34757f85ff8c9b2d930a6b58e9fe19e7775f552"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05744",
    "kind": "arxiv",
    "version": 2
  }
}