Pith Number

pith:33MF2XKA

pith:1996:33MF2XKAOHXMULJZGARXYX5IHK

not attested not anchored not stored refs pending

Galaxy Evolution in Abell 2390

E. Ellingson, H. K. C. Yee, J. B. Hutchings, J. B. Oke, M. Rigler, R. G. Abraham, R. G. Carlberg, S. Morris, T. A. Smecker-Hane

arxiv:astro-ph/9605144 v1 · 1996-05-23 · 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{33MF2XKAOHXMULJZGARXYX5IHK}

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	2026-07-04T15:59:41.067236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ded85d5d4071eeca2d3930237c5fa83a8186dccbe71fa82bcfd7132ed1fdcd80

Aliases

arxiv: astro-ph/9605144 · arxiv_version: astro-ph/9605144v1 · doi: 10.48550/arxiv.astro-ph/9605144 · pith_short_12: 33MF2XKAOHXM · pith_short_16: 33MF2XKAOHXMULJZ · pith_short_8: 33MF2XKA

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/33MF2XKAOHXMULJZGARXYX5IHK \
  | 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: ded85d5d4071eeca2d3930237c5fa83a8186dccbe71fa82bcfd7132ed1fdcd80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ee363dc088dad8042a4560439a611ab3589c36b0f00b14221ccad900f2e0839",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-05-23T14:24:06Z",
    "title_canon_sha256": "745c312ada1c0adf441abb387cdbd718761a9e0a2450f2da5b418e441c6aabd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9605144",
    "kind": "arxiv",
    "version": 1
  }
}