Pith Number

pith:BGH7NT6T

pith:2000:BGH7NT6TOL3GHWMFP5Y5UMXJLF

not attested not anchored not stored refs pending

Helium-like ions as powerful X-ray plasma diagnostics

A.J.J Raassen, D. Porquet, J. Dubau, J.S. Kaastra, R. Mewe

arxiv:astro-ph/0012218 v2 · 2000-12-11 · 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{BGH7NT6TOL3GHWMFP5Y5UMXJLF}

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	2026-07-04T14:10:56.883559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

098ff6cfd372f663d9857f71da32e959557820f7e586c95532634bc990f70bf8

Aliases

arxiv: astro-ph/0012218 · arxiv_version: astro-ph/0012218v2 · doi: 10.48550/arxiv.astro-ph/0012218 · pith_short_12: BGH7NT6TOL3G · pith_short_16: BGH7NT6TOL3GHWMF · pith_short_8: BGH7NT6T

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/BGH7NT6TOL3GHWMFP5Y5UMXJLF \
  | 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: 098ff6cfd372f663d9857f71da32e959557820f7e586c95532634bc990f70bf8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74b354db924dcfe16928962f0db1946d0e1a12283c3905bc5a277ba78d964941",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-12-11T07:25:05Z",
    "title_canon_sha256": "ad7a274fac90801f0c4d8a8df7918703587fbe31e6dd82df7c3a50a123c4973d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0012218",
    "kind": "arxiv",
    "version": 2
  }
}