Pith Number

pith:EPKQYQEF

pith:2002:EPKQYQEFGNDSAX5VL3YEMK53DT

not attested not anchored not stored refs pending

Chromospheric Dynamics of Betelgeuse from STIS Spectra

Alex Lobel

arxiv:astro-ph/0211506 v1 · 2002-11-22 · 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{EPKQYQEFGNDSAX5VL3YEMK53DT}

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	2026-07-04T14:12:27.626367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23d50c40853347205fb55ef0462bbb1cfe0ed80fdafe72f7757e68c7f9b09d6d

Aliases

arxiv: astro-ph/0211506 · arxiv_version: astro-ph/0211506v1 · doi: 10.48550/arxiv.astro-ph/0211506 · pith_short_12: EPKQYQEFGNDS · pith_short_16: EPKQYQEFGNDSAX5V · pith_short_8: EPKQYQEF

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/EPKQYQEFGNDSAX5VL3YEMK53DT \
  | 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: 23d50c40853347205fb55ef0462bbb1cfe0ed80fdafe72f7757e68c7f9b09d6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a41da36b509fa2259338de329614df23d3eb567ed8096239bc85cb8cbfb80d07",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-11-22T19:49:11Z",
    "title_canon_sha256": "3a93456622d7b7645954c040c290ae29384b7b6542c7aa2e7cc6a2046da43bf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0211506",
    "kind": "arxiv",
    "version": 1
  }
}