Pith Number

pith:25IKUFH5

pith:2018:25IKUFH5LTABO6WNIIZXCEVKOF

not attested not anchored not stored refs pending

Is the IMF in ellipticals bottom-heavy? Clues from their chemical abundances

A. Pasquali, C. De Masi, E. Spitoni, F. Matteucci, F. Vincenzo, G. Rosani, La Barbera

arxiv:1805.06841 v2 · 2018-05-17 · 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{25IKUFH5LTABO6WNIIZXCEVKOF}

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	2026-05-18T00:00:08.563688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d750aa14fd5cc0177acd42337112aa714a7af3d62efa57fe3e88a457aededf47

Aliases

arxiv: 1805.06841 · arxiv_version: 1805.06841v2 · doi: 10.48550/arxiv.1805.06841 · pith_short_12: 25IKUFH5LTAB · pith_short_16: 25IKUFH5LTABO6WN · pith_short_8: 25IKUFH5

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/25IKUFH5LTABO6WNIIZXCEVKOF \
  | 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: d750aa14fd5cc0177acd42337112aa714a7af3d62efa57fe3e88a457aededf47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d727a746ab9b99a1037572259c7583c15e6fce6d6bc04afc745bec52baf966f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-17T16:17:40Z",
    "title_canon_sha256": "2e16b59f8c7d77c3743370a91687b595537dfad20946c40b609d5000a3063e7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.06841",
    "kind": "arxiv",
    "version": 2
  }
}