Pith Number

pith:FFIIOUVV

pith:2009:FFIIOUVV4EJHW75JOQFQCGAQRO

not attested not anchored not stored refs pending

A new approach to modified-gravity models

Anjan A. Sen, Emmanuel N. Saridakis, Sayan K. Chakrabarti

arxiv:0908.0293 v2 · 2009-08-03 · astro-ph.CO · gr-qc · 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{FFIIOUVV4EJHW75JOQFQCGAQRO}

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	2026-05-18T04:09:36.445100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29508752b5e1127b7fa9740b0118108ba9e332779bba9ec817865269747f21cd

Aliases

arxiv: 0908.0293 · arxiv_version: 0908.0293v2 · doi: 10.48550/arxiv.0908.0293 · pith_short_12: FFIIOUVV4EJH · pith_short_16: FFIIOUVV4EJHW75J · pith_short_8: FFIIOUVV

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/FFIIOUVV4EJHW75JOQFQCGAQRO \
  | 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: 29508752b5e1127b7fa9740b0118108ba9e332779bba9ec817865269747f21cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3f97665dbaa1d7f1ffd9ff8da35508f045f2af5dac99f104bca4f7e48c8af85",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-03T16:29:10Z",
    "title_canon_sha256": "11262d42c682347f7773e9458b46e599c891dc458dba5eed9b1c8addd8d5a252"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0293",
    "kind": "arxiv",
    "version": 2
  }
}