Pith Number

pith:4DKBD5DI

pith:2021:4DKBD5DI6CR5HOY6MEK7J6YRRJ

not attested not anchored not stored refs pending

Determine the Masses and Ages of Red Giant Branch Stars from Low-resolution LAMOST Spectra Using DenseNet

Jianhang Xie, Jingyu Xu, Junchao Liang, Xuejie Li, Yude Bu

arxiv:2106.04945 v1 · 2021-06-09 · astro-ph.SR · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4DKBD5DI6CR5HOY6MEK7J6YRRJ}

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	2026-07-05T02:47:51.155988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0d411f468f0a3d3bb1e6115f4fb118a4ed1b4882fdf63872368150f71356441

Aliases

arxiv: 2106.04945 · arxiv_version: 2106.04945v1 · doi: 10.48550/arxiv.2106.04945 · pith_short_12: 4DKBD5DI6CR5 · pith_short_16: 4DKBD5DI6CR5HOY6 · pith_short_8: 4DKBD5DI

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/4DKBD5DI6CR5HOY6MEK7J6YRRJ \
  | 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: e0d411f468f0a3d3bb1e6115f4fb118a4ed1b4882fdf63872368150f71356441

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6ae6cd3f8bdb24a9c3ff91dae403631b405dd48d6a9edb258e0c7b004250307",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-06-09T09:44:26Z",
    "title_canon_sha256": "6f85fa4d77b9734abc72f255d877321afc83620bf9da92fce927ab674141b5c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.04945",
    "kind": "arxiv",
    "version": 1
  }
}