Pith Number

pith:YY6WY6FV

pith:2015:YY6WY6FVEC7BZUKZJVQZM2SPKJ

not attested not anchored not stored refs pending

Abundance patterns in early-type galaxies: is there a 'knee' in the [Fe/H] vs. [alpha/Fe] relation?

A. Gallazzi, C. Chiappini, C. J. Walcher, G. Bruzual, P.R.T. Coelho, S. Charlot

arxiv:1508.05103 v1 · 2015-08-20 · 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{YY6WY6FVEC7BZUKZJVQZM2SPKJ}

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	2026-05-18T01:30:55.922598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c63d6c78b520be1cd1594d61966a4f525eedb8d689857ac5ab985227367d408e

Aliases

arxiv: 1508.05103 · arxiv_version: 1508.05103v1 · doi: 10.48550/arxiv.1508.05103 · pith_short_12: YY6WY6FVEC7B · pith_short_16: YY6WY6FVEC7BZUKZ · pith_short_8: YY6WY6FV

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/YY6WY6FVEC7BZUKZJVQZM2SPKJ \
  | 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: c63d6c78b520be1cd1594d61966a4f525eedb8d689857ac5ab985227367d408e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "247a91c7dc53ee7f966e53acb84ddeb426318fe593883eb885c813e7b8ce6cdd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-20T20:06:46Z",
    "title_canon_sha256": "0f1b702407ebc6c928f6cb4ade8745a27c563a06186e1fc81676df83a5d59187"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.05103",
    "kind": "arxiv",
    "version": 1
  }
}