Pith Number

pith:NFN3HHCG

pith:2009:NFN3HHCGEUGZUHLT7FLHOWQH4M

not attested not anchored not stored refs pending

The flux-dependent rms variability of X-ray binaries in the optical

Poshak Gandhi

arxiv:0904.2791 v1 · 2009-04-17 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFN3HHCGEUGZUHLT7FLHOWQH4M}

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	2026-05-18T04:29:43.443219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

695bb39c46250d9a1d73f956775a07e3023c25ac3f56404f0b4c7ca902ed7f6e

Aliases

arxiv: 0904.2791 · arxiv_version: 0904.2791v1 · doi: 10.48550/arxiv.0904.2791 · pith_short_12: NFN3HHCGEUGZ · pith_short_16: NFN3HHCGEUGZUHLT · pith_short_8: NFN3HHCG

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/NFN3HHCGEUGZUHLT7FLHOWQH4M \
  | 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: 695bb39c46250d9a1d73f956775a07e3023c25ac3f56404f0b4c7ca902ed7f6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b7a2d731b06dc62998b9ee6be9915a3fa57b24235f123b9501273a6ae73c86a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-17T22:28:33Z",
    "title_canon_sha256": "b25b0b1ab3b462f5677e7fbdd1e4a6fe2ed3ec5eba5aaaed1c4f1d2d1496c8f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2791",
    "kind": "arxiv",
    "version": 1
  }
}