Pith Number

pith:PISIL4NC

pith:2002:PISIL4NC45NW2HLYU6M6G7ATPR

not attested not anchored not stored refs pending

The Pioneer riddle, the quantum vacuum and the acceleration of light

Antonio F. Ranada

arxiv:gr-qc/0211052 v3 · 2002-11-13 · gr-qc · astro-ph · 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{PISIL4NC45NW2HLYU6M6G7ATPR}

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	2026-05-18T04:33:05.407577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a2485f1a2e75b6d1d78a799e37c137c46538fdb2a0c97beaa54e2340aa4ef05

Aliases

arxiv: gr-qc/0211052 · arxiv_version: gr-qc/0211052v3 · doi: 10.48550/arxiv.gr-qc/0211052 · pith_short_12: PISIL4NC45NW · pith_short_16: PISIL4NC45NW2HLY · pith_short_8: PISIL4NC

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/PISIL4NC45NW2HLYU6M6G7ATPR \
  | 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: 7a2485f1a2e75b6d1d78a799e37c137c46538fdb2a0c97beaa54e2340aa4ef05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7ae500b8037ec1d834fe5689ddf67e7de7ab9dd09a35747784bf152a9f29fd9",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2002-11-13T16:23:40Z",
    "title_canon_sha256": "709f219fc5c07cc4091f6767291116c5699d2a052309ac9bb1a1f883ff0d0174"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0211052",
    "kind": "arxiv",
    "version": 3
  }
}