Pith Number

pith:2FR4X6O7

pith:2019:2FR4X6O72KHLIFGL6HTX7JDNS2

not attested not anchored not stored refs pending

Exploring the Star Formation Histories of Galaxies in Different Environments from MaNGA Spectra

Fangting Yuan, Jun Yin, Lei Hao, Maria Argudo-Fern\'andez, M\'ed\'eric Boquien, Ruixiang Chang, Shiyin Shen

arxiv:1902.03276 v2 · 2019-02-08 · 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{2FR4X6O72KHLIFGL6HTX7JDNS2}

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	2026-05-17T23:53:57.060362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d163cbf9dfd28eb414cbf1e77fa46d96ad28a2a51733b4e2596c381c0387ab75

Aliases

arxiv: 1902.03276 · arxiv_version: 1902.03276v2 · doi: 10.48550/arxiv.1902.03276 · pith_short_12: 2FR4X6O72KHL · pith_short_16: 2FR4X6O72KHLIFGL · pith_short_8: 2FR4X6O7

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/2FR4X6O72KHLIFGL6HTX7JDNS2 \
  | 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: d163cbf9dfd28eb414cbf1e77fa46d96ad28a2a51733b4e2596c381c0387ab75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a725a334f3d7fb23fb8277715220e30dd427a6e5afeb4c29aa0874ec33ca2a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-02-08T20:14:58Z",
    "title_canon_sha256": "20cfaaf0da41972e98aa8b960cebccd35c0a1aad27ad2905c0c4d8b8e7ab5ff7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03276",
    "kind": "arxiv",
    "version": 2
  }
}