Pith Number

pith:TNQO2EDU

pith:2020:TNQO2EDUSY4KL427KXGDLMNOJP

not attested not anchored not stored refs pending

APOGEE Net: Improving the derived spectral parameters for young stars through deep learning

Brian Hutchinson, Chad Schillinger, Erin Howard, Keivan G. Stassun, K. R. Covey, Marina Kounkel, Matthew T. Scoggins, Richard Olney, Yichuan Yin

arxiv:2002.08390 v1 · 2020-02-19 · 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{TNQO2EDUSY4KL427KXGDLMNOJP}

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	2026-07-05T00:53:46.016091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b60ed10749638a5f35f55cc35b1ae4bd2d2b76a9ef11f83f032eb4015a3d840

Aliases

arxiv: 2002.08390 · arxiv_version: 2002.08390v1 · doi: 10.48550/arxiv.2002.08390 · pith_short_12: TNQO2EDUSY4K · pith_short_16: TNQO2EDUSY4KL427 · pith_short_8: TNQO2EDU

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/TNQO2EDUSY4KL427KXGDLMNOJP \
  | 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: 9b60ed10749638a5f35f55cc35b1ae4bd2d2b76a9ef11f83f032eb4015a3d840

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ad2d7c585ac17ee05a8595fb70eb1b22ecb357b11a17b036bc084d9a3401b5d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-02-19T19:05:03Z",
    "title_canon_sha256": "4d121c364e2512b8afe344ef3312f2b47e06f0f7085b817cfc52c7d4788f4507"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.08390",
    "kind": "arxiv",
    "version": 1
  }
}