Pith Number

pith:EPLXUCVZ

pith:2000:EPLXUCVZIU543PZMMWLKUYVHHM

not attested not anchored not stored refs pending

Molecular hydrogen emission in Cygnus A

A. C. Edge, A. C. Fabian, C. S. Crawford, R. J. Wilman, R. M. Johnstone

arxiv:astro-ph/0007223 v1 · 2000-07-17 · 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{EPLXUCVZIU543PZMMWLKUYVHHM}

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	2026-05-18T01:07:46.557906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23d77a0ab9453bcdbf2c6596aa62a73b1d407950dc3a9c262a10c7e593dcbe08

Aliases

arxiv: astro-ph/0007223 · arxiv_version: astro-ph/0007223v1 · doi: 10.48550/arxiv.astro-ph/0007223 · pith_short_12: EPLXUCVZIU54 · pith_short_16: EPLXUCVZIU543PZM · pith_short_8: EPLXUCVZ

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/EPLXUCVZIU543PZMMWLKUYVHHM \
  | 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: 23d77a0ab9453bcdbf2c6596aa62a73b1d407950dc3a9c262a10c7e593dcbe08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89d6996490f72f8b41bad68ff0b736d615beb9cce572248627d57cd09ae36891",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-17T08:26:30Z",
    "title_canon_sha256": "a5d2ebf5359f1a650df392ac57a6f183dda48311603a9026bcf61838828a2525"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007223",
    "kind": "arxiv",
    "version": 1
  }
}