Pith Number

pith:M22J2YVX

pith:2021:M22J2YVXE4J5GUIGKYGEYZM43Z

not attested not anchored not stored refs pending

The Be/neutron star system Swift J004929.5-733107 in the Small Magellanic Cloud -- X-ray characteristics and optical counterpart candidates

A. Udalski, D. A. H. Buckley, I. M. Monageng, J. A. Kennea, L. J. Townsend, M. J. Coe, P. A. Evans

arxiv:2104.02790 v1 · 2021-04-06 · 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{M22J2YVXE4J5GUIGKYGEYZM43Z}

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	2026-07-05T02:33:32.638536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66b49d62b72713d35106560c4c659cde5c111f0aef03b164c180800ec33eb63f

Aliases

arxiv: 2104.02790 · arxiv_version: 2104.02790v1 · doi: 10.48550/arxiv.2104.02790 · pith_short_12: M22J2YVXE4J5 · pith_short_16: M22J2YVXE4J5GUIG · pith_short_8: M22J2YVX

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/M22J2YVXE4J5GUIGKYGEYZM43Z \
  | 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: 66b49d62b72713d35106560c4c659cde5c111f0aef03b164c180800ec33eb63f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea2f9e235822c00bf43ae76e0934a9b991c984211105f38185df65b2c777e816",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-04-06T21:22:27Z",
    "title_canon_sha256": "375af643d32cf11a060873619d22ce2332524ef75362d8e34bbf25745e022ebd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02790",
    "kind": "arxiv",
    "version": 1
  }
}