Pith Number

pith:KGR6Q57G

pith:1999:KGR6Q57GO56CQOGIO5TFGJZDAO

not attested not anchored not stored refs pending

On the nature of the compact star in 4U 1728-34

Ignazio Bombaci, Jishnu Dey, Mira Dey, Subharthi Ray, Xiang-Dong Li

arxiv:astro-ph/9908274 v1 · 1999-08-25 · 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{KGR6Q57GO56CQOGIO5TFGJZDAO}

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	2026-07-04T16:11:32.531264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51a3e877e6777c2838c877665327230382f9f6694801e04d465a4ae824b61782

Aliases

arxiv: astro-ph/9908274 · arxiv_version: astro-ph/9908274v1 · doi: 10.48550/arxiv.astro-ph/9908274 · pith_short_12: KGR6Q57GO56C · pith_short_16: KGR6Q57GO56CQOGI · pith_short_8: KGR6Q57G

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/KGR6Q57GO56CQOGIO5TFGJZDAO \
  | 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: 51a3e877e6777c2838c877665327230382f9f6694801e04d465a4ae824b61782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5566d7df7ea4f304d7870d04582d0abf588dc8435b8b380313994bf8f11d725b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-08-25T07:19:30Z",
    "title_canon_sha256": "716f796b430262df0da158ccf440d3f935416b22e749a2323e2a355462b78689"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9908274",
    "kind": "arxiv",
    "version": 1
  }
}