Pith Number

pith:3Y3FX7RQ

pith:2009:3Y3FX7RQRWXV4XIM32U7FT6PT5

not attested not anchored not stored refs pending

A Systematic Study of Variability in a Sample of Ultraluminous X-ray Sources

(2) University of Durham), L.M. Heil (1), S. Vaughan (1), T.P. Roberts (2) ((1) University of Leicester

arxiv:0905.1265 v1 · 2009-05-08 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3Y3FX7RQRWXV4XIM32U7FT6PT5}

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	2026-05-18T02:13:46.349014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de365bfe308daf5e5d0cdea9f2cfcf9f7c3054e0f4a9d6dc679f67ee26272f4d

Aliases

arxiv: 0905.1265 · arxiv_version: 0905.1265v1 · doi: 10.48550/arxiv.0905.1265 · pith_short_12: 3Y3FX7RQRWXV · pith_short_16: 3Y3FX7RQRWXV4XIM · pith_short_8: 3Y3FX7RQ

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/3Y3FX7RQRWXV4XIM32U7FT6PT5 \
  | 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: de365bfe308daf5e5d0cdea9f2cfcf9f7c3054e0f4a9d6dc679f67ee26272f4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbe1e3b1d3278e5f68fde812080cd685cb0da51e7be65015760cdaf8d6af12ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-05-08T14:22:48Z",
    "title_canon_sha256": "b4510263a65d4a9037e339fc9700ef3e79b79355c20bec2fd1e8e37439432c17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1265",
    "kind": "arxiv",
    "version": 1
  }
}