Pith Number

pith:MGKM2TNH

pith:1996:MGKM2TNHHQYIBKTDFDZPXU5YOJ

not attested not anchored not stored refs pending

Secular Evolution of Galaxy Morphologies

D. Pfenniger, F. Combes, L. Martinet

arxiv:astro-ph/9602139 v2 · 1996-02-27 · 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{MGKM2TNHHQYIBKTDFDZPXU5YOJ}

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	2026-05-18T01:21:50.021072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6194cd4da73c3080aa6328f2fbd3b872454ba6aac216e739ffaac342f2ec5916

Aliases

arxiv: astro-ph/9602139 · arxiv_version: astro-ph/9602139v2 · doi: 10.48550/arxiv.astro-ph/9602139 · pith_short_12: MGKM2TNHHQYI · pith_short_16: MGKM2TNHHQYIBKTD · pith_short_8: MGKM2TNH

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/MGKM2TNHHQYIBKTDFDZPXU5YOJ \
  | 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: 6194cd4da73c3080aa6328f2fbd3b872454ba6aac216e739ffaac342f2ec5916

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b27abdb3401ab9fd54f16e6cc58dc3a9dc420a26aa65810ad0c0c66c2f9a1aa",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-02-27T16:00:05Z",
    "title_canon_sha256": "38d4058dfd2c4d22d5ddd21e62ec42ab039eca2d4db469319247543d30d5f169"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9602139",
    "kind": "arxiv",
    "version": 2
  }
}