Pith Number

pith:3NDADVOL

pith:2018:3NDADVOLRJPFTY4FD67CW5CJIG

not attested not anchored not stored refs pending

$f(R)$ gravity modifications: from the action to the data

Mar\'ia Ortiz-Ba\~nos, Ruth Lazkoz, Vincenzo Salzano

arxiv:1803.05638 v1 · 2018-03-15 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3NDADVOLRJPFTY4FD67CW5CJIG}

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	2026-05-18T00:20:55.024586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db4601d5cb8a5e59e3851fbe2b7449418db5dc69709cde77da8cfdbe369d09f1

Aliases

arxiv: 1803.05638 · arxiv_version: 1803.05638v1 · doi: 10.48550/arxiv.1803.05638 · pith_short_12: 3NDADVOLRJPF · pith_short_16: 3NDADVOLRJPFTY4F · pith_short_8: 3NDADVOL

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/3NDADVOLRJPFTY4FD67CW5CJIG \
  | 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: db4601d5cb8a5e59e3851fbe2b7449418db5dc69709cde77da8cfdbe369d09f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77631c1a3cc63733a70a62d4614ca0c5d7ee0b747d9fcdfdfbf917ac40fb6d47",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-03-15T08:48:26Z",
    "title_canon_sha256": "849bee028dd9ce4feacd3c8f215c566d254325165acf2283169def987a75c589"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05638",
    "kind": "arxiv",
    "version": 1
  }
}