Pith Number

pith:VURAEEVK

pith:2013:VURAEEVK4ISJ6BVLX4GJM3K7A3

not attested not anchored not stored refs pending

On Poincar\'e gauge theory of gravity, its equations of motion, and Gravity Probe B

Columbia, Dirk Puetzfeld (Bremen, Friedrich W. Hehl (Cologne, Germany, Germany), Missouri), Russia), Yuri N. Obukhov (Moscow

arxiv:1304.2769 v2 · 2013-04-09 · gr-qc · astro-ph.EP · 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{VURAEEVK4ISJ6BVLX4GJM3K7A3}

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	2026-05-18T01:50:40.870426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad220212aae2249f06abbf0c966d5f06e315ba43f4d003899ff8f853f1b5c3db

Aliases

arxiv: 1304.2769 · arxiv_version: 1304.2769v2 · doi: 10.48550/arxiv.1304.2769 · pith_short_12: VURAEEVK4ISJ · pith_short_16: VURAEEVK4ISJ6BVL · pith_short_8: VURAEEVK

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/VURAEEVK4ISJ6BVLX4GJM3K7A3 \
  | 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: ad220212aae2249f06abbf0c966d5f06e315ba43f4d003899ff8f853f1b5c3db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "042b9003b64efddce1bff764e7fc5227e2f14a193d93253e94da41ff15a64063",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-04-09T20:00:02Z",
    "title_canon_sha256": "b626d287a5bb88b232b6f55c98e619a8467d65439eb9bcb555dcdcde20efb6df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2769",
    "kind": "arxiv",
    "version": 2
  }
}