Pith Number

pith:23NYOHSN

pith:2006:23NYOHSN6BB4DXSP5MPLHBI5GJ

not attested not anchored not stored refs pending

Robust Machine Learning Applied to Astronomical Datasets II: Quantifying Photometric Redshifts for Quasars Using Instance-Based Learning

2), (2) National Center for Supercomputing Applications, (3) Department of Physics, Adam D. Myers (1, David Tcheng (2), Natalie E. Strand (3), Nicholas M. Ball (1, Robert J. Brunner (1, Stacey L. Alberts (1), University of Illinois at Urbana-Champaign, University of Illinois at Urbana-Champaign), Xavier Llor\`a (2) ((1) Department of Astronomy

arxiv:astro-ph/0612471 v2 · 2006-12-17 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{23NYOHSN6BB4DXSP5MPLHBI5GJ}

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	2026-05-18T04:29:14.744562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6db871e4df043c1de4feb1eb3851d327d82ecc9576fd455fad097abca519b54

Aliases

arxiv: astro-ph/0612471 · arxiv_version: astro-ph/0612471v2 · doi: 10.48550/arxiv.astro-ph/0612471 · pith_short_12: 23NYOHSN6BB4 · pith_short_16: 23NYOHSN6BB4DXSP · pith_short_8: 23NYOHSN

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/23NYOHSN6BB4DXSP5MPLHBI5GJ \
  | 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: d6db871e4df043c1de4feb1eb3851d327d82ecc9576fd455fad097abca519b54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1712dffa93aedf7481c7f4869f8933391ad4ab7b9b45fdb62bce425080355792",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-17T20:56:32Z",
    "title_canon_sha256": "e31ef150bded04cd1ba463bf2a298ee4acb6e9b0635fad3648aed52fdb3df099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612471",
    "kind": "arxiv",
    "version": 2
  }
}