Pith Number

pith:G2D3MU7S

pith:2011:G2D3MU7STC3D4ADA2SURRSUVGE

not attested not anchored not stored refs pending

Fast Light, Fast Neutrinos?

Kevin Cahill

arxiv:1109.5357 v3 · 2011-09-25 · physics.gen-ph · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G2D3MU7STC3D4ADA2SURRSUVGE}

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	2026-05-18T04:11:20.055364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3687b653f298b63e0060d4a918ca95310e5292486a8fab5ede67c4e1d739658c

Aliases

arxiv: 1109.5357 · arxiv_version: 1109.5357v3 · doi: 10.48550/arxiv.1109.5357 · pith_short_12: G2D3MU7STC3D · pith_short_16: G2D3MU7STC3D4ADA · pith_short_8: G2D3MU7S

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/G2D3MU7STC3D4ADA2SURRSUVGE \
  | 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: 3687b653f298b63e0060d4a918ca95310e5292486a8fab5ede67c4e1d739658c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f60f8854f506851f1c9bb55b625750bfc9fde06d39eeedf5b99363459bc72de",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2011-09-25T13:58:18Z",
    "title_canon_sha256": "95cdbdc27702e6be533b1519137f908c7026b149e36a8c593ac29ab406da31c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5357",
    "kind": "arxiv",
    "version": 3
  }
}