Pith Number

pith:O75JVWYA

pith:1997:O75JVWYAJGU2KMUBVKNFIJU42N

not attested not anchored not stored refs pending

The X-ray spectrum of the polar BY Cam

C. Done, P. Magdziarz

arxiv:astro-ph/9712221 v1 · 1997-12-17 · 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{O75JVWYAJGU2KMUBVKNFIJU42N}

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	2026-05-18T01:40:14.721643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77fa9adb0049a9a53281aa9a54269cd37d35a6779f95909ec85c7c728e4db7ce

Aliases

arxiv: astro-ph/9712221 · arxiv_version: astro-ph/9712221v1 · doi: 10.48550/arxiv.astro-ph/9712221 · pith_short_12: O75JVWYAJGU2 · pith_short_16: O75JVWYAJGU2KMUB · pith_short_8: O75JVWYA

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/O75JVWYAJGU2KMUBVKNFIJU42N \
  | 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: 77fa9adb0049a9a53281aa9a54269cd37d35a6779f95909ec85c7c728e4db7ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84ee113fb8c8f349c550dee370af43ac60a39bf063d5494211b6cb37a1c361d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-12-17T12:33:07Z",
    "title_canon_sha256": "b74ac07d14c1a9e42bfd9623f75528e619ff18f3a9b3a578dffd999d19112718"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9712221",
    "kind": "arxiv",
    "version": 1
  }
}