Pith Number

pith:W5A7DJ6O

pith:2013:W5A7DJ6OYCA4YWWIQDFFOLMLMQ

not attested not anchored not stored refs pending

Solar system tests of f(R) gravity

Jun-Qi Guo

arxiv:1306.1853 v4 · 2013-06-07 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5A7DJ6OYCA4YWWIQDFFOLMLMQ}

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	2026-05-18T02:55:57.413214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b741f1a7cec081cc5ac880ca572d8b64142638464ac95177107d9ba31f739e33

Aliases

arxiv: 1306.1853 · arxiv_version: 1306.1853v4 · doi: 10.48550/arxiv.1306.1853 · pith_short_12: W5A7DJ6OYCA4 · pith_short_16: W5A7DJ6OYCA4YWWI · pith_short_8: W5A7DJ6O

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/W5A7DJ6OYCA4YWWIQDFFOLMLMQ \
  | 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: b741f1a7cec081cc5ac880ca572d8b64142638464ac95177107d9ba31f739e33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b224cec82601a50d4518d4de6b0dbc17caa1711b59ba6454986a9cc0120d7358",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-06-07T22:20:12Z",
    "title_canon_sha256": "8ec9e55dddc3dba5a86d83178077345e1c97694d04d3a2f1bc66cb8b421fc1c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1853",
    "kind": "arxiv",
    "version": 4
  }
}