Pith Number

pith:RSONXRIZ

pith:2013:RSONXRIZUKNVFKSF7XR6B5ICLJ

not attested not anchored not stored refs pending

An Environmental Variation of Constants

Philippe Brax

arxiv:1310.2562 v2 · 2013-10-09 · astro-ph.CO · hep-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{RSONXRIZUKNVFKSF7XR6B5ICLJ}

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	2026-05-18T02:48:09.883723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c9cdbc519a29b52aa45fde3e0f5025a4369e2ad0d2f6cf85fc996135e0a2b8c

Aliases

arxiv: 1310.2562 · arxiv_version: 1310.2562v2 · doi: 10.48550/arxiv.1310.2562 · pith_short_12: RSONXRIZUKNV · pith_short_16: RSONXRIZUKNVFKSF · pith_short_8: RSONXRIZ

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/RSONXRIZUKNVFKSF7XR6B5ICLJ \
  | 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: 8c9cdbc519a29b52aa45fde3e0f5025a4369e2ad0d2f6cf85fc996135e0a2b8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50276a017dd0f4f5484eed8e3ecec4562fec7bff6f8612f44fd11e2fc438a358",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-09T18:09:45Z",
    "title_canon_sha256": "bf9d1dad9c088fcc9f9ffd30cc4fba80b31848673f48a8f94cd1d529a96ad9ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2562",
    "kind": "arxiv",
    "version": 2
  }
}