Pith Number

pith:SRBKFSWE

pith:2014:SRBKFSWEB6VM4URHU4H7HQHTFQ

not attested not anchored not stored refs pending

Age Gradients in the Stellar Populations of Massive Star Forming Regions Based on a New Stellar Chronometer

2), (2) Center for Exoplanets, (3) University of Exeter, (4) California State Polytechnic University, (5) Huntingdon Institute for X-ray Astronomy), Eric D. Feigelson (1, Gordon P. Garmire (5) ((1) Pennsylvania State University, Habitable Worlds at PSU, Kevin L. Luhman (1, Konstantin V. Getman (1), Leisa K. Townsley (1), Matthew S. Povich (4), Michael A. Kuhn (1), Patrick S. Broos (1), Tim Naylor (3)

arxiv:1403.2741 v1 · 2014-03-11 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SRBKFSWEB6VM4URHU4H7HQHTFQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:44:02.395405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9442a2cac40faace5227a70ff3c0f32c15f138255884ec6c10d32aedcd3e51a3

Aliases

arxiv: 1403.2741 · arxiv_version: 1403.2741v1 · doi: 10.48550/arxiv.1403.2741 · pith_short_12: SRBKFSWEB6VM · pith_short_16: SRBKFSWEB6VM4URH · pith_short_8: SRBKFSWE

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/SRBKFSWEB6VM4URHU4H7HQHTFQ \
  | 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: 9442a2cac40faace5227a70ff3c0f32c15f138255884ec6c10d32aedcd3e51a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b260eb76eba23a8bbfed58c0245d09968c6c066c35c955c717e0c68a716e20e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-03-11T20:17:41Z",
    "title_canon_sha256": "c167b344132c921f9f6361046799547c3e031bd1c41d30388181dbfc673a8fb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2741",
    "kind": "arxiv",
    "version": 1
  }
}