Pith Number

pith:POUKTN4L

pith:2007:POUKTN4L2M7TKTMEAH5B3FK6LQ

not attested not anchored not stored refs pending

Acceleration of the Universe driven by the Casimir force

Marek Szydlowski, Wlodzimierz Godlowski

arxiv:0705.1772 v1 · 2007-05-12 · 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{POUKTN4L2M7TKTMEAH5B3FK6LQ}

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	2026-07-04T15:24:12.845746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ba8a9b78bd33f354d8401fa1d955e5c3ba720826742fb22ae322b869ec0247f

Aliases

arxiv: 0705.1772 · arxiv_version: 0705.1772v1 · doi: 10.48550/arxiv.0705.1772 · pith_short_12: POUKTN4L2M7T · pith_short_16: POUKTN4L2M7TKTME · pith_short_8: POUKTN4L

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/POUKTN4L2M7TKTMEAH5B3FK6LQ \
  | 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: 7ba8a9b78bd33f354d8401fa1d955e5c3ba720826742fb22ae322b869ec0247f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "418967bd936fffa1e0f52b495bd8db93e1c2eecb5ec4d2d46b89fdeda84b0bf8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-05-12T13:45:30Z",
    "title_canon_sha256": "081d4b4557c0c33d3b0273958172526e3fbd6921b69dbc7fdd2b22f544e1a902"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.1772",
    "kind": "arxiv",
    "version": 1
  }
}