Pith Number

pith:LGKMOWKU

pith:2017:LGKMOWKUDOX7QUF7KJEAIKO4GU

not attested not anchored not stored refs pending

The evolution of the metallicity gradient and the star formation efficiency in disc galaxies

Diego G. Lambas, Emanuel Sillero, Leo Michel-Dansac, Patricia B. Tissera

arxiv:1709.00438 v1 · 2017-09-01 · 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{LGKMOWKUDOX7QUF7KJEAIKO4GU}

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	2026-05-18T00:36:08.051333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5994c759541baff850bf52480429dc35043cb68500d841916b2ccbdf3f13ed24

Aliases

arxiv: 1709.00438 · arxiv_version: 1709.00438v1 · doi: 10.48550/arxiv.1709.00438 · pith_short_12: LGKMOWKUDOX7 · pith_short_16: LGKMOWKUDOX7QUF7 · pith_short_8: LGKMOWKU

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/LGKMOWKUDOX7QUF7KJEAIKO4GU \
  | 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: 5994c759541baff850bf52480429dc35043cb68500d841916b2ccbdf3f13ed24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "028eca56ac9925e5b835aa0c8c9b322a7396b8017e8ae1a99680e1bb250deb30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-01T18:32:14Z",
    "title_canon_sha256": "88b2ba2de26b650cac86c1c67f77636b744135eeb3adc5ca4b3a714a657fe402"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.00438",
    "kind": "arxiv",
    "version": 1
  }
}