Pith Number

pith:KNPZ4L4Y

pith:2013:KNPZ4L4YLOCLYWKSPVAMTRQFOS

not attested not anchored not stored refs pending

Laboratory search for a quintessence field

Michael V. Romalis, Robert R. Caldwell

arxiv:1302.1579 v2 · 2013-02-06 · astro-ph.CO · gr-qc · 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{KNPZ4L4YLOCLYWKSPVAMTRQFOS}

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	2026-05-18T03:32:16.692620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

535f9e2f985b84bc59527d40c9c60574b784057a7961d2ed6da8a7a7396c1a8e

Aliases

arxiv: 1302.1579 · arxiv_version: 1302.1579v2 · doi: 10.48550/arxiv.1302.1579 · pith_short_12: KNPZ4L4YLOCL · pith_short_16: KNPZ4L4YLOCLYWKS · pith_short_8: KNPZ4L4Y

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/KNPZ4L4YLOCLYWKSPVAMTRQFOS \
  | 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: 535f9e2f985b84bc59527d40c9c60574b784057a7961d2ed6da8a7a7396c1a8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cb571810a574dc9e90dba77a72f6ad7a13c13f8d3b32d28cfc2b7b4ffab4c78",
    "cross_cats_sorted": [
      "gr-qc",
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-06T21:00:03Z",
    "title_canon_sha256": "24069d5a5ee2201e5442d3b04068f6292c69e09439d761ec79afd9290ce3758b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.1579",
    "kind": "arxiv",
    "version": 2
  }
}