Pith Number

pith:XY74ZJQU

pith:2008:XY74ZJQUGF6YAAP3WRQ2AOIUBR

not attested not anchored not stored refs pending

Frequency Variation of the Kilohertz Quasi-periodic Oscillations and the Flux of the Band-limited Noise in Scorpius X-1

Wenfei Yu, Xiaofeng Cao

arxiv:0809.2120 v1 · 2008-09-12 · astro-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{XY74ZJQUGF6YAAP3WRQ2AOIUBR}

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	2026-05-18T04:29:32.735579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be3fcca614317d8001fbb461a039140c490f00a5df16a28449aa6aa8338a9c48

Aliases

arxiv: 0809.2120 · arxiv_version: 0809.2120v1 · doi: 10.48550/arxiv.0809.2120 · pith_short_12: XY74ZJQUGF6Y · pith_short_16: XY74ZJQUGF6YAAP3 · pith_short_8: XY74ZJQU

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/XY74ZJQUGF6YAAP3WRQ2AOIUBR \
  | 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: be3fcca614317d8001fbb461a039140c490f00a5df16a28449aa6aa8338a9c48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "236404ee0ad57fb519ca3740b77fc93dc61d1afaf9e19b44d331d42a720098d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-12T01:36:05Z",
    "title_canon_sha256": "9dd3d5f83403421c294c5b246053bdf1f61fcf3cbefbdb35304529bbc97fe5f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2120",
    "kind": "arxiv",
    "version": 1
  }
}