Pith Number

pith:53KF4HSH

pith:2019:53KF4HSHGXJQFHSORNNKYDVN45

not attested not anchored not stored refs pending

A Population of Neutron Star Ultraluminous X-ray Sources with A Helium Star Companion

Xiang-Dong Li, Yong Shao, Zi-Gao Dai

arxiv:1910.06590 v1 · 2019-10-15 · 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{53KF4HSHGXJQFHSORNNKYDVN45}

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	2026-07-05T00:31:24.279974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eed45e1e4735d3029e4e8b5aac0eade77dc7d644bb909cc06ead327f0a750a34

Aliases

arxiv: 1910.06590 · arxiv_version: 1910.06590v1 · doi: 10.48550/arxiv.1910.06590 · pith_short_12: 53KF4HSHGXJQ · pith_short_16: 53KF4HSHGXJQFHSO · pith_short_8: 53KF4HSH

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/53KF4HSHGXJQFHSORNNKYDVN45 \
  | 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: eed45e1e4735d3029e4e8b5aac0eade77dc7d644bb909cc06ead327f0a750a34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1ba93857e0e9aac415dd5c6100f2230a9cc07c0136fdc5c362936a3bd35330e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-10-15T08:28:14Z",
    "title_canon_sha256": "607baba657323e4e32bb0c434d381995606c408a7c6d0f2dcd1a48d329841571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.06590",
    "kind": "arxiv",
    "version": 1
  }
}