Pith Number

pith:2NDYL4KR

pith:2009:2NDYL4KRIJIWUELQIQAT6UDOVM

not attested not anchored not stored refs pending

Electromagnetic nature of dark energy

Antonio L. Maroto, Jose Beltran Jimenez

arxiv:0911.3066 v1 · 2009-11-16 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2NDYL4KRIJIWUELQIQAT6UDOVM}

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	2026-05-18T02:34:05.159696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d34785f15142516a117044013f506eab0f9a9d8535ef9fc28e4c2d5e09f58d97

Aliases

arxiv: 0911.3066 · arxiv_version: 0911.3066v1 · doi: 10.48550/arxiv.0911.3066 · pith_short_12: 2NDYL4KRIJIW · pith_short_16: 2NDYL4KRIJIWUELQ · pith_short_8: 2NDYL4KR

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/2NDYL4KRIJIWUELQIQAT6UDOVM \
  | 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: d34785f15142516a117044013f506eab0f9a9d8535ef9fc28e4c2d5e09f58d97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8ed1df24e5d702399239331aba7f94c7f26edb91eec724ee56bbfc0d632259d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-16T16:30:51Z",
    "title_canon_sha256": "8cd5de46ca4e3e0f1830e2deb0d5196cf40653ab96d807f954d40be3f119e4bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3066",
    "kind": "arxiv",
    "version": 1
  }
}