Pith Number

pith:DY4OBMWH

pith:2016:DY4OBMWHVNCKXPLHNQEEL5JMP4

not attested not anchored not stored refs pending

Ages of 70 dwarfs of three populations in the solar neighborhood: considering O and C abundances in stellar models

Fergusion J. W., J. K. Zhao, K. Liu, S. L. Bi, T. D. Li, Y. Q. Chen, Y. Q. Wu, Z. S. Ge

arxiv:1612.01622 v1 · 2016-12-06 · astro-ph.SR · 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{DY4OBMWHVNCKXPLHNQEEL5JMP4}

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	2026-05-18T00:54:16.148086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e38e0b2c7ab44abbd676c0845f52c7f34209dbc4c6691abaf98c1d5d2b01e98

Aliases

arxiv: 1612.01622 · arxiv_version: 1612.01622v1 · doi: 10.48550/arxiv.1612.01622 · pith_short_12: DY4OBMWHVNCK · pith_short_16: DY4OBMWHVNCKXPLH · pith_short_8: DY4OBMWH

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/DY4OBMWHVNCKXPLHNQEEL5JMP4 \
  | 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: 1e38e0b2c7ab44abbd676c0845f52c7f34209dbc4c6691abaf98c1d5d2b01e98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "259852756e71650c3c2a8481be87ded8a55db083718acd8573a2ab6c6c9e44b7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-12-06T01:33:41Z",
    "title_canon_sha256": "a32057a7b654381cb58cef2ef2e9b05798ee13ee88bfff2632094d399a1998e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01622",
    "kind": "arxiv",
    "version": 1
  }
}