Pith Number

pith:U4HSEF4Q

pith:2004:U4HSEF4QUX2XJCSB5YY3MHNTFE

not attested not anchored not stored refs pending

GEMS: Galaxy Evolution from Morphologies and SEDs

Boris Haeussler, Chien Y. Peng, Christian Wolf, Daniel H. McIntosh, Eric F. Bell, Hans-Walter Rix, John A. R. Caldwell, Klaus Meisenheimer, Knud Jahnke, Lutz Wisotzki, Marco Barden, Rachel S. Somerville, Sebastian F. Sanchez, Shardha Jogee, Steven V.W. Beckwith

arxiv:astro-ph/0401427 v1 · 2004-01-21 · 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{U4HSEF4QUX2XJCSB5YY3MHNTFE}

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	2026-05-18T04:33:16.756874Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a70f221790a5f5748a41ee31b61db3293bb8b77e5225686d0a7a8e68e0a2f935

Aliases

arxiv: astro-ph/0401427 · arxiv_version: astro-ph/0401427v1 · doi: 10.48550/arxiv.astro-ph/0401427 · pith_short_12: U4HSEF4QUX2X · pith_short_16: U4HSEF4QUX2XJCSB · pith_short_8: U4HSEF4Q

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/U4HSEF4QUX2XJCSB5YY3MHNTFE \
  | 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: a70f221790a5f5748a41ee31b61db3293bb8b77e5225686d0a7a8e68e0a2f935

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d4c4460e02793414b9a55add29c10e1d036a7ddf08a0095994618e376f06061",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-01-21T18:55:42Z",
    "title_canon_sha256": "47d4786e03b0674915d060f8da7737c8dc2d8ba97aebe2921cab2604faf312a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0401427",
    "kind": "arxiv",
    "version": 1
  }
}