Pith Number

pith:RJ6PUDGX

pith:2018:RJ6PUDGXRDKMKFG36OT26ANDLU

not attested not anchored not stored refs pending

Physical content of Quadratic Gravity

Enrique Alvarez, Jesus Anero, Raquel Santos-Garcia, Sergio Gonzalez-Martin

arxiv:1802.05922 v3 · 2018-02-16 · 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{RJ6PUDGXRDKMKFG36OT26ANDLU}

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	2026-05-18T00:03:17.166035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a7cfa0cd788d4c514dbf3a7af01a35d0a7d65289e69e1947e54b3b172fe8cfb

Aliases

arxiv: 1802.05922 · arxiv_version: 1802.05922v3 · doi: 10.48550/arxiv.1802.05922 · pith_short_12: RJ6PUDGXRDKM · pith_short_16: RJ6PUDGXRDKMKFG3 · pith_short_8: RJ6PUDGX

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/RJ6PUDGXRDKMKFG36OT26ANDLU \
  | 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: 8a7cfa0cd788d4c514dbf3a7af01a35d0a7d65289e69e1947e54b3b172fe8cfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44c77520decd635dfd13126d734732dd63a82caed5b9c2f84bbfe2437736afbf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-02-16T13:18:06Z",
    "title_canon_sha256": "bd11974c0fcc86a4daf0511b0303e6cb498bd2eceeffd1360f98bbc15c651b7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05922",
    "kind": "arxiv",
    "version": 3
  }
}