Pith Number

pith:3JJTTOHH

pith:2018:3JJTTOHH3APV5NUQDHZ74VS6UQ

not attested not anchored not stored refs pending

Why do many early-type galaxies lack emission lines? I. Fossil clues

A. Mateus, F. Herpich, G. Stasi\'nska, N. Vale Asari, R. Cid Fernandes

arxiv:1808.10405 v1 · 2018-08-30 · 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{3JJTTOHH3APV5NUQDHZ74VS6UQ}

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	2026-05-18T00:06:44.623209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da5339b8e7d81f5eb69019f3fe565ea41091bb129d1310abb2be3a8747c327bb

Aliases

arxiv: 1808.10405 · arxiv_version: 1808.10405v1 · doi: 10.48550/arxiv.1808.10405 · pith_short_12: 3JJTTOHH3APV · pith_short_16: 3JJTTOHH3APV5NUQ · pith_short_8: 3JJTTOHH

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/3JJTTOHH3APV5NUQDHZ74VS6UQ \
  | 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: da5339b8e7d81f5eb69019f3fe565ea41091bb129d1310abb2be3a8747c327bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83be7e3567f01a6e2f61b1ea7da3e8d95e2aa12b15c963b90f7847a8c48137bb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-30T17:21:08Z",
    "title_canon_sha256": "ee23365782f84d97e53607f1a09c9da160cf6a8d2994c1b6307221c1c758f4c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10405",
    "kind": "arxiv",
    "version": 1
  }
}