Pith Number

pith:SYS7UCFL

pith:2009:SYS7UCFL6LGGW3YHIX3XK7OF7T

not attested not anchored not stored refs pending

QSO Selection and Photometric Redshifts with Neural Networks

Ch. Pichon, Ch. Yeche, E. Aubourg, E. Rollinde, I. Paris, J.-Ch. Hamilton, J.-M. Le Goff, J. Rich, M. Vargas-Magana, N. Busca, P. Petitjean, S. Peirani

arxiv:0910.3770 v1 · 2009-10-20 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SYS7UCFL6LGGW3YHIX3XK7OF7T}

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.

Cited by

1 paper in Pith

Assessing the large-scale angular clustering of UNIONS Lyman Break Galaxies via cross-correlations

Receipt and verification

First computed	2026-07-04T15:54:45.519468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9625fa08abf2cc6b6f0745f7757dc5fcc86b0480857c345f746d7e472c075a3c

Aliases

arxiv: 0910.3770 · arxiv_version: 0910.3770v1 · doi: 10.48550/arxiv.0910.3770 · pith_short_12: SYS7UCFL6LGG · pith_short_16: SYS7UCFL6LGGW3YH · pith_short_8: SYS7UCFL

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/SYS7UCFL6LGGW3YHIX3XK7OF7T \
  | 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: 9625fa08abf2cc6b6f0745f7757dc5fcc86b0480857c345f746d7e472c075a3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88f3b64647a4c58e4aad4e9784ef48438083e524ee1f7dc65050f943ada4e120",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-20T08:59:26Z",
    "title_canon_sha256": "7e9946fb69417d6890ec304d705e1fd1a465d3075577b444a16335147c522b09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.3770",
    "kind": "arxiv",
    "version": 1
  }
}