Pith Number

pith:YDGCJ4CO

pith:2013:YDGCJ4COVIKYSLTGH4VRGGFZ6Y

not attested not anchored not stored refs pending

Metallicity evolution, metallicity gradients and gas fractions at z~3.4

A. Cimatti, A. Fontana, A. Grazian, A. Marconi, F. Mannucci, G. Cresci, L. Pentericci, M. Meneghetti, P. Troncoso, R. Maiolino, T. Nagao, V. Sommariva

arxiv:1311.4576 v2 · 2013-11-18 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YDGCJ4COVIKYSLTGH4VRGGFZ6Y}

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	2026-05-18T01:46:23.354288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0cc24f04eaa15892e663f2b1318b9f63ff7ea0a9bdecd8a11e76c93cbecd69f

Aliases

arxiv: 1311.4576 · arxiv_version: 1311.4576v2 · doi: 10.48550/arxiv.1311.4576 · pith_short_12: YDGCJ4COVIKY · pith_short_16: YDGCJ4COVIKYSLTG · pith_short_8: YDGCJ4CO

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/YDGCJ4COVIKYSLTGH4VRGGFZ6Y \
  | 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: c0cc24f04eaa15892e663f2b1318b9f63ff7ea0a9bdecd8a11e76c93cbecd69f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b7898f5b34730c8f1c0591257a3fad30e617c6b8600c8370961527b0ce34892",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-18T22:37:52Z",
    "title_canon_sha256": "d0ccb0bc7e879e786982a0a0aea250073b2dec9eff8d6cb3aab4bef823dc536e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4576",
    "kind": "arxiv",
    "version": 2
  }
}