Pith Number

pith:DWLVJZ4J

pith:2001:DWLVJZ4JCIUMLLKKA6Q776P64O

not attested not anchored not stored refs pending

X-ray spectral imaging and Doppler mapping of Cassiopeia A

J.A.M.Bleeker, J.S.Kaastra, J.Vink, K.J. van der Heyden, R.Willingale

arxiv:astro-ph/0107270 v1 · 2001-07-16 · 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{DWLVJZ4JCIUMLLKKA6Q776P64O}

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	2026-07-04T16:23:42.581060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d9754e7891228c5ad4a07a1fff9fee394e7741c1f48f9158fcffc23e9c8982d

Aliases

arxiv: astro-ph/0107270 · arxiv_version: astro-ph/0107270v1 · doi: 10.48550/arxiv.astro-ph/0107270 · pith_short_12: DWLVJZ4JCIUM · pith_short_16: DWLVJZ4JCIUMLLKK · pith_short_8: DWLVJZ4J

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/DWLVJZ4JCIUMLLKKA6Q776P64O \
  | 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: 1d9754e7891228c5ad4a07a1fff9fee394e7741c1f48f9158fcffc23e9c8982d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6afb3d53aa41f043909f39debca1d52a363e566f7fbf620dd5f9b818b97b5d9f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-16T11:11:20Z",
    "title_canon_sha256": "c9806835afd0c2ba2b3412a4ac4c4983a4a811255f452ef74a4275c0caf93940"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107270",
    "kind": "arxiv",
    "version": 1
  }
}