Pith Number

pith:YZDXHVY2

pith:2019:YZDXHVY2CN3KYXI344S55BSG32

not attested not anchored not stored refs pending

An X-ray and optical study of the outbursting behaviour of the SMC Be X-ray binary SXP 91.1

Andrzej Udalski, David Buckley, Itumeleng Monageng, Jamie Kennea, Lee Townsend, Malcolm Coe, Paul Roche, Phil Evans, Vanessa McBride

arxiv:1908.04638 v1 · 2019-08-13 · 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{YZDXHVY2CN3KYXI344S55BSG32}

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	2026-07-04T23:58:53.926555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c64773d71a1376ac5d1be725de8646dea4d68af0db376c78b1d1f7730e039c23

Aliases

arxiv: 1908.04638 · arxiv_version: 1908.04638v1 · doi: 10.48550/arxiv.1908.04638 · pith_short_12: YZDXHVY2CN3K · pith_short_16: YZDXHVY2CN3KYXI3 · pith_short_8: YZDXHVY2

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/YZDXHVY2CN3KYXI344S55BSG32 \
  | 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: c64773d71a1376ac5d1be725de8646dea4d68af0db376c78b1d1f7730e039c23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4469a29b5d8dce4c489cf2380bad8021b606adc479811cdae6b8d14741496c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-08-13T13:43:37Z",
    "title_canon_sha256": "1bb566e0990505b01476e45f3a844d03828ebe6aca960fa0099fbead6e0454af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04638",
    "kind": "arxiv",
    "version": 1
  }
}