Pith Number

pith:QN3WITPH

pith:2021:QN3WITPHZNZWMGW5CYWZOYYJSZ

not attested not anchored not stored refs pending

Quenching and Galaxy Demographics

Adam Amara, Lucia F. de la Bella, Philipp Sudek, Simon Birrer, William G. Hartley

arxiv:2112.11110 v1 · 2021-12-21 · astro-ph.CO · 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{QN3WITPHZNZWMGW5CYWZOYYJSZ}

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	2026-07-05T03:42:29.155398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8377644de7cb73661add162d976309965961c60301293545ba24ffd99fbf64ce

Aliases

arxiv: 2112.11110 · arxiv_version: 2112.11110v1 · doi: 10.48550/arxiv.2112.11110 · pith_short_12: QN3WITPHZNZW · pith_short_16: QN3WITPHZNZWMGW5 · pith_short_8: QN3WITPH

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/QN3WITPHZNZWMGW5CYWZOYYJSZ \
  | 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: 8377644de7cb73661add162d976309965961c60301293545ba24ffd99fbf64ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45520375010c8ad3c772e7db5da74ed357d311c8b2fa53e8027a29e8b5bc618b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-12-21T11:22:48Z",
    "title_canon_sha256": "c3296fd4c43e279012ce5ddc9337c4b44921165a3ee828b565517626fe9127ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.11110",
    "kind": "arxiv",
    "version": 1
  }
}