Pith Number

pith:6QX5O4JB

pith:2019:6QX5O4JB2CX7ZFW6V5ASXGK4VZ

not attested not anchored not stored refs pending

Cosmological perfect fluids in higher-order gravity

Carlo Alberto Mantica, Luca Guido Molinari, Salvatore Capozziello

arxiv:1908.10176 v1 · 2019-08-27 · gr-qc · 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{6QX5O4JB2CX7ZFW6V5ASXGK4VZ}

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	2026-07-05T00:58:37.073781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f42fd77121d0affc96deaf412b995cae5d96ede551099dd27464679249a9e9d5

Aliases

arxiv: 1908.10176 · arxiv_version: 1908.10176v1 · doi: 10.48550/arxiv.1908.10176 · pith_short_12: 6QX5O4JB2CX7 · pith_short_16: 6QX5O4JB2CX7ZFW6 · pith_short_8: 6QX5O4JB

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/6QX5O4JB2CX7ZFW6V5ASXGK4VZ \
  | 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: f42fd77121d0affc96deaf412b995cae5d96ede551099dd27464679249a9e9d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98a8a322ff1749a48c21e7a6d3255ad898fdf510254a427695f220be126baf89",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-27T13:11:17Z",
    "title_canon_sha256": "be198af986eaf40b70921f05fa5fa502d45ae3c5b7b0facc472cc62ecdf7d4c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.10176",
    "kind": "arxiv",
    "version": 1
  }
}