Pith Number

pith:OBJZBY2J

pith:2018:OBJZBY2JJNHV2MD3E6Q72T7X7L

not attested not anchored not stored refs pending

A formation timescale of the Galactic halo from Mg isotopes in dwarf stars

Amanda I. Karakas, Chiaki Kobayashi, Jorge Melendez, Judith G. Cohen, Marilia Carlos

arxiv:1804.01280 v1 · 2018-04-04 · 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{OBJZBY2JJNHV2MD3E6Q72T7X7L}

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	2026-05-18T00:18:10.371071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

705390e3494b4f5d307b27a1fd4ff7faee732a100291557f6937a12de07ef7c6

Aliases

arxiv: 1804.01280 · arxiv_version: 1804.01280v1 · doi: 10.48550/arxiv.1804.01280 · pith_short_12: OBJZBY2JJNHV · pith_short_16: OBJZBY2JJNHV2MD3 · pith_short_8: OBJZBY2J

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/OBJZBY2JJNHV2MD3E6Q72T7X7L \
  | 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: 705390e3494b4f5d307b27a1fd4ff7faee732a100291557f6937a12de07ef7c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19c364dea58ace9412300a54fdefc7f85354fd4de5bf7e133c14feb02382d596",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-04T07:56:17Z",
    "title_canon_sha256": "51cf8a9ddad98c901f27a58bcda22c9572a2cbc79f20f051f09311c9bc66e11f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01280",
    "kind": "arxiv",
    "version": 1
  }
}