Pith Number

pith:34RK2GCU

pith:2013:34RK2GCUXARK2JCKTH52GK7ZJ3

not attested not anchored not stored refs pending

A new approach to modifying theories of gravity

Christian G. Boehmer, Nicola Tamanini

arxiv:1301.5471 v2 · 2013-01-23 · gr-qc · 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{34RK2GCUXARK2JCKTH52GK7ZJ3}

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	2026-05-18T01:30:49.550916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df22ad1854b822ad244a99fba32bf94edc06e4e259a00d7858321243d22eaecc

Aliases

arxiv: 1301.5471 · arxiv_version: 1301.5471v2 · doi: 10.48550/arxiv.1301.5471 · pith_short_12: 34RK2GCUXARK · pith_short_16: 34RK2GCUXARK2JCK · pith_short_8: 34RK2GCU

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/34RK2GCUXARK2JCKTH52GK7ZJ3 \
  | 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: df22ad1854b822ad244a99fba32bf94edc06e4e259a00d7858321243d22eaecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f19986ad28998117a10198c0db129e1063d323d8f5954e860ff82644ca423854",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-01-23T11:30:35Z",
    "title_canon_sha256": "a17677a871ea1c1cfb632f6e6454e2a87c7ebd763c505a22321843e093866c14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5471",
    "kind": "arxiv",
    "version": 2
  }
}