Pith Number

pith:TSFAKI7Z

pith:2001:TSFAKI7Z4JCK7AEWKQOFVL35HL

not attested not anchored not stored refs pending

Spectral analysis of the sdO K 648, the exciting star of the planetary nebula Ps 1 in the globular cluster M 15 (NGC 7078)

K. Werner, T. Rauch, U. Heber

arxiv:astro-ph/0111062 v3 · 2001-11-03 · 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{TSFAKI7Z4JCK7AEWKQOFVL35HL}

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	2026-07-04T16:24:24.487202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c8a0523f9e244af8096541c5aaf7d3aeefe9a260a58a57e8aea65019a09de36

Aliases

arxiv: astro-ph/0111062 · arxiv_version: astro-ph/0111062v3 · doi: 10.48550/arxiv.astro-ph/0111062 · pith_short_12: TSFAKI7Z4JCK · pith_short_16: TSFAKI7Z4JCK7AEW · pith_short_8: TSFAKI7Z

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/TSFAKI7Z4JCK7AEWKQOFVL35HL \
  | 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: 9c8a0523f9e244af8096541c5aaf7d3aeefe9a260a58a57e8aea65019a09de36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5af389033a8953f6c817f71fd1edbbe8114029bfa4ebdbf3bc92fb3dbaa0a0a0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-11-03T09:26:24Z",
    "title_canon_sha256": "10aee702d9ec25a3eccbf03894b3fb3b44a0c106ca5e20c6f0b4a2a9cc586908"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0111062",
    "kind": "arxiv",
    "version": 3
  }
}