Pith Number

pith:KYQTBQK3

pith:2009:KYQTBQK3V3UTUVI5SFMQKPMBFI

not attested not anchored not stored refs pending

Neutron Stars in f(R) Gravity with Perturbative Constraints

Alan Cooney (Arizona), Dimitrios Psaltis (Arizona), Simon DeDeo (Santa Fe)

arxiv:0910.5480 v2 · 2009-10-28 · astro-ph.HE · 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{KYQTBQK3V3UTUVI5SFMQKPMBFI}

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.

Cited by

1 paper in Pith

Testing General Relativity with Present and Future Astrophysical Observations

Receipt and verification

First computed	2026-05-18T02:34:12.563952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

562130c15baee93a551d9159053d812a244371e126bc4b8d016757011ddb26f6

Aliases

arxiv: 0910.5480 · arxiv_version: 0910.5480v2 · doi: 10.48550/arxiv.0910.5480 · pith_short_12: KYQTBQK3V3UT · pith_short_16: KYQTBQK3V3UTUVI5 · pith_short_8: KYQTBQK3

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/KYQTBQK3V3UTUVI5SFMQKPMBFI \
  | 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: 562130c15baee93a551d9159053d812a244371e126bc4b8d016757011ddb26f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31bb1e4467220c7c0645fbf769d7c119d7abdff6b895665f78c304edce2b1246",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-10-28T21:27:49Z",
    "title_canon_sha256": "1d2b8204df8616500a735660a0dc707637ebb5782fa59efaf120ded08107e299"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5480",
    "kind": "arxiv",
    "version": 2
  }
}