Pith Number

pith:N4GVNAPS

pith:2007:N4GVNAPSUVTD4ETHVYXQUKC7RO

not attested not anchored not stored refs pending

Probing Gravity with Spacetime Sirens

Cedric Deffayet (APC/IAP), Kristen Menou (Columbia)

arxiv:0709.0003 v1 · 2007-08-31 · astro-ph · 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{N4GVNAPSUVTD4ETHVYXQUKC7RO}

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	2026-05-18T01:37:45.224261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f0d5681f2a5663e1267ae2f0a285f8b9c20bc110ccbd991b9487ec5f53e3286

Aliases

arxiv: 0709.0003 · arxiv_version: 0709.0003v1 · doi: 10.48550/arxiv.0709.0003 · pith_short_12: N4GVNAPSUVTD · pith_short_16: N4GVNAPSUVTD4ETH · pith_short_8: N4GVNAPS

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/N4GVNAPSUVTD4ETHVYXQUKC7RO \
  | 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: 6f0d5681f2a5663e1267ae2f0a285f8b9c20bc110ccbd991b9487ec5f53e3286

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed2a243a9e45da7056c79fd548a1e5cc92e1743c67ef5db55695c372421d552c",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-08-31T20:00:41Z",
    "title_canon_sha256": "f52698d1464032ed208d164be6bebc705f4c4cd0903c6797fed10dfdeeb8d8e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.0003",
    "kind": "arxiv",
    "version": 1
  }
}