Pith Number

pith:ZJKIN4NJ

pith:2005:ZJKIN4NJTFCERKCVB2FSXKUYKL

not attested not anchored not stored refs pending

Three Spectral States of the Disk X-Ray Emission of the Black-Hole Candidate 4U 1630-47

(2) RIKEN, 3) ((1) Hiroshima Univsersity, (3) Univsersity of Tokyo), Aya Kubota (2), Daisuke Kasama (3), Kazuo Makishima (2, Yasushi Fukazawa (1), Yukiko Abe (1)

arxiv:astro-ph/0509520 v1 · 2005-09-18 · 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{ZJKIN4NJTFCERKCVB2FSXKUYKL}

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	2026-05-18T01:40:33.458694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca5486f1a9994448a8550e8b2baa9852d1ddb675b73921af0802b78691ca4fe3

Aliases

arxiv: astro-ph/0509520 · arxiv_version: astro-ph/0509520v1 · doi: 10.48550/arxiv.astro-ph/0509520 · pith_short_12: ZJKIN4NJTFCE · pith_short_16: ZJKIN4NJTFCERKCV · pith_short_8: ZJKIN4NJ

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/ZJKIN4NJTFCERKCVB2FSXKUYKL \
  | 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: ca5486f1a9994448a8550e8b2baa9852d1ddb675b73921af0802b78691ca4fe3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab9d2d173036744d2ac37235db70752f642e85219cac45387acea4ad846f92d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-18T08:52:00Z",
    "title_canon_sha256": "9ec5b145280f35443302b9c141ae7b577bc727895ce376a4a3b51b49043a2f0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509520",
    "kind": "arxiv",
    "version": 1
  }
}