Pith Number

pith:RZKL3PYP

pith:2021:RZKL3PYP4CH3TD6BWDORIQNCFL

not attested not anchored not stored refs pending

The Flattening Metallicity Gradient in the Milky Way's Thin Disk

John J. Vickers, Juntai Shen, Zhao-Yu Li

arxiv:2109.09250 v1 · 2021-09-20 · 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{RZKL3PYP4CH3TD6BWDORIQNCFL}

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	2026-07-05T03:38:34.618817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e54bdbf0fe08fb98fc1b0dd1441a22acc3fb4d16ae73444aaa41fa0fb623a55

Aliases

arxiv: 2109.09250 · arxiv_version: 2109.09250v1 · doi: 10.48550/arxiv.2109.09250 · pith_short_12: RZKL3PYP4CH3 · pith_short_16: RZKL3PYP4CH3TD6B · pith_short_8: RZKL3PYP

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/RZKL3PYP4CH3TD6BWDORIQNCFL \
  | 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: 8e54bdbf0fe08fb98fc1b0dd1441a22acc3fb4d16ae73444aaa41fa0fb623a55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0e5e1a109910aa6c735f8aa5de996715b738546c4f221db5e67b6096c73fcee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-20T00:00:48Z",
    "title_canon_sha256": "3e6514d4e1151c0617a9a5bff8b101f9a44662d3f89b2f641043d20a3dfc2290"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.09250",
    "kind": "arxiv",
    "version": 1
  }
}