Pith Number

pith:SJY3MP5G

pith:2018:SJY3MP5G62WAIKJAJGR2VHUFYV

not attested not anchored not stored refs pending

Estimating stellar birth radii and the time evolution of the Milky Way's ISM metallicity gradient

A. Queiroz, A. Recio-Blanco, B. X. Santiago, C. Chiappini, F. Anders, G. Cescutti, G. Guiglion, G. Kordopatis, I. Carrillo, I. Minchev, M. Hayden, M. Martig, M. Steinmetz, P. de Laverny, R. S. de Jong, S. R. Majewski, V. Adibekyan

arxiv:1804.06856 v2 · 2018-04-18 · 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{SJY3MP5G62WAIKJAJGR2VHUFYV}

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	2026-05-18T00:08:42.275632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9271b63fa6f6ac04292049a3aa9e85c57438bb793a43150ad33cdfd63266a870

Aliases

arxiv: 1804.06856 · arxiv_version: 1804.06856v2 · doi: 10.48550/arxiv.1804.06856 · pith_short_12: SJY3MP5G62WA · pith_short_16: SJY3MP5G62WAIKJA · pith_short_8: SJY3MP5G

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/SJY3MP5G62WAIKJAJGR2VHUFYV \
  | 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: 9271b63fa6f6ac04292049a3aa9e85c57438bb793a43150ad33cdfd63266a870

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5662207178412fc3846a5621d851110b1ba4c78216d4797f16bf7a2c1836558f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-18T18:00:06Z",
    "title_canon_sha256": "efbd2920a9f1ef137e85fe71f0db1b6c603707ae6614a511ebe91f43bbfe7b41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06856",
    "kind": "arxiv",
    "version": 2
  }
}