Pith Number

pith:7KILSW6F

pith:1999:7KILSW6FQWVUNSQFO7OGFXUKQH

not attested not anchored not stored refs pending

A new X-ray outburst in the globular cluster NGC 6440: SAX J1748.9-2021

A. Bazzano, F. Verbunt, J. Heise, J.J.M. in 't Zand, J.M. Muller, L. Natalucci, M. Cocchi, M.H. van Kerkwijk, M.J.S. Smith, P. Ubertini, T.E. Strohmayer

arxiv:astro-ph/9902319 v1 · 1999-02-23 · 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{7KILSW6FQWVUNSQFO7OGFXUKQH}

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.

Cited by

1 paper in Pith

Tracing the outburst decay of soft X-ray transients Aql X-1 and 4U 1608-52 with XSPECT

Receipt and verification

First computed	2026-07-04T14:16:34.647245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa90b95bc585ab46ca0577dc62de8a81e5aaa7072a2b452ed09866c5efdf1820

Aliases

arxiv: astro-ph/9902319 · arxiv_version: astro-ph/9902319v1 · doi: 10.48550/arxiv.astro-ph/9902319 · pith_short_12: 7KILSW6FQWVU · pith_short_16: 7KILSW6FQWVUNSQF · pith_short_8: 7KILSW6F

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/7KILSW6FQWVUNSQFO7OGFXUKQH \
  | 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: fa90b95bc585ab46ca0577dc62de8a81e5aaa7072a2b452ed09866c5efdf1820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "840deb5c8cc046f1bddb50461007b0be442a9703312fbb7f35b3e1369a372e80",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-23T08:44:06Z",
    "title_canon_sha256": "8f384d25e39176af7ae357e5696d4e270e002079ee19a57a4cfc7599c0b1aae5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902319",
    "kind": "arxiv",
    "version": 1
  }
}