Pith Number

pith:NJOCIDED

pith:2012:NJOCIDEDI5T7TNI2HV4GVESOP2

not attested not anchored not stored refs pending

The formation of the extremely primitive star SDSS J102915+172927 relies on dust

Alessandro Chieffi, Andrea Ferrara, Kazuyuki Omukai, Marco Limongi, Raffaella Schneider, Ruben Salvaterra, Simone Bianchi

arxiv:1203.4234 v1 · 2012-03-19 · astro-ph.CO · 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{NJOCIDEDI5T7TNI2HV4GVESOP2}

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	2026-05-18T01:58:05.977134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a5c240c834767f9b51a3d786a924e7eae68859fd60a2221720e19efc58f3f85

Aliases

arxiv: 1203.4234 · arxiv_version: 1203.4234v1 · doi: 10.48550/arxiv.1203.4234 · pith_short_12: NJOCIDEDI5T7 · pith_short_16: NJOCIDEDI5T7TNI2 · pith_short_8: NJOCIDED

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/NJOCIDEDI5T7TNI2HV4GVESOP2 \
  | 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: 6a5c240c834767f9b51a3d786a924e7eae68859fd60a2221720e19efc58f3f85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79f0d884a41ea2bc011aab66b7ab44ff263063e0204693821ac963895a6a721e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-19T20:00:11Z",
    "title_canon_sha256": "abee59c3d8f01bc7594821031be117532d662046bc8c53641a26d21231a04941"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4234",
    "kind": "arxiv",
    "version": 1
  }
}