Pith Number

pith:HSRITYEO

pith:2013:HSRITYEOFPD34TWF5H7VR7IZNK

not attested not anchored not stored refs pending

Phantom dark energy as an effect of bulk viscosity

Hermano Velten, Jiaxin Wang, Xinhe Meng

arxiv:1307.4262 v2 · 2013-07-16 · 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{HSRITYEOFPD34TWF5H7VR7IZNK}

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	2026-05-18T03:04:37.486539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ca289e08e2bc7be4ec5e9ff58fd196abeb0c3433dad9823dfd22666d6567952

Aliases

arxiv: 1307.4262 · arxiv_version: 1307.4262v2 · doi: 10.48550/arxiv.1307.4262 · pith_short_12: HSRITYEOFPD3 · pith_short_16: HSRITYEOFPD34TWF · pith_short_8: HSRITYEO

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/HSRITYEOFPD34TWF5H7VR7IZNK \
  | 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: 3ca289e08e2bc7be4ec5e9ff58fd196abeb0c3433dad9823dfd22666d6567952

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90544cb4bb2d82995b0e84dac55d5f2860aab9045044f571685920b37023f26f",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-16T12:52:44Z",
    "title_canon_sha256": "611e373bf32fc930884c74b2ce79b61b9d9b1cf55acf7f4f76a9156a2b8956db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4262",
    "kind": "arxiv",
    "version": 2
  }
}