Pith Number

pith:P2Z4F6S2

pith:1996:P2Z4F6S22EXY7R3SEDAX5TE3TC

not attested not anchored not stored refs pending

The Shapes and Ages of Elliptical Galaxies

Roelof S. de Jong, Roger L. Davies (University of Durham)

arxiv:astro-ph/9611104 v1 · 1996-11-13 · 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{P2Z4F6S22EXY7R3SEDAX5TE3TC}

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	2026-05-18T01:22:58.873214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7eb3c2fa5ad12f8fc77220c17ecc9b9899443120e074ab384774de901bb0daa7

Aliases

arxiv: astro-ph/9611104 · arxiv_version: astro-ph/9611104v1 · doi: 10.48550/arxiv.astro-ph/9611104 · pith_short_12: P2Z4F6S22EXY · pith_short_16: P2Z4F6S22EXY7R3S · pith_short_8: P2Z4F6S2

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/P2Z4F6S22EXY7R3SEDAX5TE3TC \
  | 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: 7eb3c2fa5ad12f8fc77220c17ecc9b9899443120e074ab384774de901bb0daa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa89754da82b3b26c5f6939dadd4dd8d15b379a104c21527addfd414be963131",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-11-13T18:56:41Z",
    "title_canon_sha256": "e086e8bf282235939031a0037dace80d2d4791fd538f4d21b5c5e5fd83ae3b62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9611104",
    "kind": "arxiv",
    "version": 1
  }
}