Pith Number

pith:ZIQRP5A2

pith:2004:ZIQRP5A2IOZ7GA2E77E5NPE74I

not attested not anchored not stored refs pending

Two Years of Observations of the X-ray Pulsar SMC X-1 with the ART-P Telescope onboard the Granat Observatory

2), 2) (1 - Space Research Institute, 2 - MPA, A.A.Lutovinov (1, Garching), M.N.Pavlinsky (1), Moscow, R.A.Sunyaev (1, S.A.Grebenev (1), S.S.Tsygankov (1)

arxiv:astro-ph/0403069 v1 · 2004-03-02 · 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{ZIQRP5A2IOZ7GA2E77E5NPE74I}

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	2026-07-04T16:43:09.330195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca2117f41a43b3f30344ffc9d6bc9fe2176d734f6df021ee9b17a8d527abc60c

Aliases

arxiv: astro-ph/0403069 · arxiv_version: astro-ph/0403069v1 · doi: 10.48550/arxiv.astro-ph/0403069 · pith_short_12: ZIQRP5A2IOZ7 · pith_short_16: ZIQRP5A2IOZ7GA2E · pith_short_8: ZIQRP5A2

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/ZIQRP5A2IOZ7GA2E77E5NPE74I \
  | 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: ca2117f41a43b3f30344ffc9d6bc9fe2176d734f6df021ee9b17a8d527abc60c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea15ed142ee8f176466a9f6d316e309138142a385c23c961d1de07eb0718d339",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-03-02T17:08:15Z",
    "title_canon_sha256": "a4398a41ef8180f33fd7c42555816b8063c47f4a482c6b9cf863353bd4f97ad6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0403069",
    "kind": "arxiv",
    "version": 1
  }
}