Pith Number

pith:DCIENPQI

pith:2012:DCIENPQIP3XI2GPZOTJGBWRD23

not attested not anchored not stored refs pending

Cosmological model with variable equations of state for matter and dark energy

J. Ponce de Leon

arxiv:1204.0589 v1 · 2012-04-03 · gr-qc · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DCIENPQIP3XI2GPZOTJGBWRD23}

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	2026-05-18T03:53:43.545538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

189046be087eee8d19f974d260da23d6c84a34fb6e7f3c43b35dcbc6779b6208

Aliases

arxiv: 1204.0589 · arxiv_version: 1204.0589v1 · doi: 10.48550/arxiv.1204.0589 · pith_short_12: DCIENPQIP3XI · pith_short_16: DCIENPQIP3XI2GPZ · pith_short_8: DCIENPQI

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/DCIENPQIP3XI2GPZOTJGBWRD23 \
  | 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: 189046be087eee8d19f974d260da23d6c84a34fb6e7f3c43b35dcbc6779b6208

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52b2d5f1ef4b3fcb5d8977464eda706bb1cab00492a50d758af256cf7dba1e4a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-04-03T03:51:58Z",
    "title_canon_sha256": "939b6090665db129c7e9a8531dc83e1d7441c9769dbd20ce9438051daa71c9e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0589",
    "kind": "arxiv",
    "version": 1
  }
}