Pith Number

pith:F3EV35ID

pith:2013:F3EV35IDSZHJ35K4O2UMHZFTWW

not attested not anchored not stored refs pending

Intrinsic uncertainty on the nature of dark energy

Martin Kunz, Valerio Marra, Wessel Valkenburg

arxiv:1302.6588 v2 · 2013-02-26 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F3EV35IDSZHJ35K4O2UMHZFTWW}

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	2026-05-18T02:53:15.382890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ec95df503964e9df55c76a8c3e4b3b594ecb752ca590c97592c369a78a1bbe3

Aliases

arxiv: 1302.6588 · arxiv_version: 1302.6588v2 · doi: 10.48550/arxiv.1302.6588 · pith_short_12: F3EV35IDSZHJ · pith_short_16: F3EV35IDSZHJ35K4 · pith_short_8: F3EV35ID

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/F3EV35IDSZHJ35K4O2UMHZFTWW \
  | 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: 2ec95df503964e9df55c76a8c3e4b3b594ecb752ca590c97592c369a78a1bbe3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5916354cf9c7833f5773d37da281b9afe6b44e0d3a8654bdb3298f64b787e977",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-26T21:00:01Z",
    "title_canon_sha256": "0c1db7caf2c558eca5fc4e418b4d9d46e099a0f68dc29c45baa0d85919e92ad9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6588",
    "kind": "arxiv",
    "version": 2
  }
}