Pith Number

pith:KBGVL75R

pith:2009:KBGVL75RKOYBQYPAXGGPSPXJOJ

not attested not anchored not stored refs pending

First evidence for spectral state transitions in the ESO243-49 hyper luminous X-ray source HLX-1

D. Barret, N. A. Webb (CESR), N. Gehrels (GFSC), O. Godet, S. A. Farrell (University of Leicester)

arxiv:0909.4458 v1 · 2009-09-24 · 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{KBGVL75RKOYBQYPAXGGPSPXJOJ}

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	2026-05-18T02:34:27.817608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

504d55ffb153b01861e0b98cf93ee9726841b621ea499e71008b02b8a99ce92f

Aliases

arxiv: 0909.4458 · arxiv_version: 0909.4458v1 · doi: 10.48550/arxiv.0909.4458 · pith_short_12: KBGVL75RKOYB · pith_short_16: KBGVL75RKOYBQYPA · pith_short_8: KBGVL75R

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/KBGVL75RKOYBQYPAXGGPSPXJOJ \
  | 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: 504d55ffb153b01861e0b98cf93ee9726841b621ea499e71008b02b8a99ce92f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68c433d277b4a66312330fb8ff42b27d0f4301229b1972cc5ef26ce02366355f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-09-24T14:20:49Z",
    "title_canon_sha256": "8cbbe04e2555a492e75dc9bdb63a71291fb66338ecf04bc2515c0e4f29cdaefe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4458",
    "kind": "arxiv",
    "version": 1
  }
}