Pith Number

pith:YTGLNTWJ

pith:2015:YTGLNTWJFC3II5MMXGYEJ7HEEA

not attested not anchored not stored refs pending

The Ages of Early-Type Stars: Str\"omgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets

Lynne A. Hillenbrand, Trevor J. David

arxiv:1501.03154 v2 · 2015-01-13 · 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{YTGLNTWJFC3II5MMXGYEJ7HEEA}

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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.

Cited by

2 papers in Pith

Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE) II: a 135 Myr planet on an aligned orbit with transit timing variations

Exploring Activity Across the Stellar Main Sequence with the Sun as a Benchmark

Receipt and verification

First computed	2026-05-18T02:09:41.319632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4ccb6cec928b684758cb9b044fce4202eaee88c836c8eb342285a55c96f9708

Aliases

arxiv: 1501.03154 · arxiv_version: 1501.03154v2 · doi: 10.48550/arxiv.1501.03154 · pith_short_12: YTGLNTWJFC3I · pith_short_16: YTGLNTWJFC3II5MM · pith_short_8: YTGLNTWJ

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/YTGLNTWJFC3II5MMXGYEJ7HEEA \
  | 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: c4ccb6cec928b684758cb9b044fce4202eaee88c836c8eb342285a55c96f9708

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e826b2c58a0631b43da26faaa4f4e12c6060b01db0b2566694360a00b8b7fda2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-01-13T21:00:08Z",
    "title_canon_sha256": "0564e685e402db3ee75e3b0a995ff687241343c0018aad888be334e501548795"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.03154",
    "kind": "arxiv",
    "version": 2
  }
}