Pith Number

pith:RDGORDXP

pith:1997:RDGORDXPH47OPAH55Q3Z6S7XEO

not attested not anchored not stored refs pending

Evidence for a dusty warm absorber in NGC 3227 ?

D), Henner Fink (MPE Garching, Stefanie Komossa

arxiv:astro-ph/9707003 v1 · 1997-07-01 · 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{RDGORDXPH47OPAH55Q3Z6S7XEO}

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	2026-07-04T14:15:11.741700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88cce88eef3f3ee780fdec379f4bf723923ed8160fd77edabb06bd1ef2820583

Aliases

arxiv: astro-ph/9707003 · arxiv_version: astro-ph/9707003v1 · doi: 10.48550/arxiv.astro-ph/9707003 · pith_short_12: RDGORDXPH47O · pith_short_16: RDGORDXPH47OPAH5 · pith_short_8: RDGORDXP

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/RDGORDXPH47OPAH55Q3Z6S7XEO \
  | 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: 88cce88eef3f3ee780fdec379f4bf723923ed8160fd77edabb06bd1ef2820583

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c31ce61cf63466991f67e46219d8208e96d7566433279166cf8eb8ce9337608",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-01T13:32:21Z",
    "title_canon_sha256": "8ee21e2a6214d23d983a5c8390e75bdf013b5412ee7fc792405ec00ffff0c207"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707003",
    "kind": "arxiv",
    "version": 1
  }
}