Pith Number

pith:7N5NBUWU

pith:2014:7N5NBUWUAKK5T4XAE75QEOPMVA

not attested not anchored not stored refs pending

A Uniform History for Galaxy Evolution

Charles L. Steinhardt, Josh S. Speagle

arxiv:1409.2883 v1 · 2014-09-09 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7N5NBUWUAKK5T4XAE75QEOPMVA}

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	2026-05-18T01:42:05.761943Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb7ad0d2d40295d9f2e027fb0239eca817bb9337597ba4793f2131b14d234c8f

Aliases

arxiv: 1409.2883 · arxiv_version: 1409.2883v1 · doi: 10.48550/arxiv.1409.2883 · pith_short_12: 7N5NBUWUAKK5 · pith_short_16: 7N5NBUWUAKK5T4XA · pith_short_8: 7N5NBUWU

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/7N5NBUWUAKK5T4XAE75QEOPMVA \
  | 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: fb7ad0d2d40295d9f2e027fb0239eca817bb9337597ba4793f2131b14d234c8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9a55333feeff4046b7ab6d6e67ede914171d1b12ebdc4002e82c0f80ca15700",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-09-09T20:00:28Z",
    "title_canon_sha256": "b3924d69971deb1b74a8d3434ce14d327a978d818058916dda8f93cf1feaac58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2883",
    "kind": "arxiv",
    "version": 1
  }
}