Pith Number

pith:4SKCB7AC

pith:2010:4SKCB7ACKSD5KKHOC7UXDES3BL

not attested not anchored not stored refs pending

Unmodified Gravity

Brendan M. Jackson, Fergus Simpson, John A. Peacock (Institute for Astronomy, University of Edinburgh)

arxiv:1004.1920 v2 · 2010-04-12 · astro-ph.CO · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SKCB7ACKSD5KKHOC7UXDES3BL}

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	2026-05-18T03:11:22.380820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e49420fc025487d528ee17e971925b0ac36a00947f1374cfce3f14601143ebdf

Aliases

arxiv: 1004.1920 · arxiv_version: 1004.1920v2 · doi: 10.48550/arxiv.1004.1920 · pith_short_12: 4SKCB7ACKSD5 · pith_short_16: 4SKCB7ACKSD5KKHO · pith_short_8: 4SKCB7AC

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/4SKCB7ACKSD5KKHOC7UXDES3BL \
  | 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: e49420fc025487d528ee17e971925b0ac36a00947f1374cfce3f14601143ebdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "034cb2fbb6b20cefe93eba96f8e11e4f8ece322b98af13435e7e58e2ee252e39",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-12T10:40:16Z",
    "title_canon_sha256": "93815c2f154862a23d6403d2b8f636d4019ae88a99e7cbe14467532f742e61fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1920",
    "kind": "arxiv",
    "version": 2
  }
}