Pith Number

pith:OQAICT4D

pith:2011:OQAICT4D7NTGGYUXMVQTP2ZROE

not attested not anchored not stored refs pending

On the Reliability of Stellar Ages and Age Spreads Inferred from Pre-Main Sequence Evolutionary Models

Mark R. Krumholz, Stella S.R. Offner, Takashi Hosokawa

arxiv:1101.3599 v3 · 2011-01-19 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQAICT4D7NTGGYUXMVQTP2ZROE}

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	2026-05-18T02:03:26.552794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7400814f83fb66636297656137eb3171392a76c8ff3907f764e96b0f81c62474

Aliases

arxiv: 1101.3599 · arxiv_version: 1101.3599v3 · doi: 10.48550/arxiv.1101.3599 · pith_short_12: OQAICT4D7NTG · pith_short_16: OQAICT4D7NTGGYUX · pith_short_8: OQAICT4D

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/OQAICT4D7NTGGYUXMVQTP2ZROE \
  | 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: 7400814f83fb66636297656137eb3171392a76c8ff3907f764e96b0f81c62474

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22f857239ee241c877c70943a8068d13b3b1f97bd0c55852a063d308bff8d554",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-01-19T02:17:54Z",
    "title_canon_sha256": "ea90d4594b1353fe103d0a2406f0222694d3423f7dceff00f9768615f1801f3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3599",
    "kind": "arxiv",
    "version": 3
  }
}