Pith Number

pith:WLKUARCZ

pith:2021:WLKUARCZXP23VYPYHMGUSEQJ7Z

not attested not anchored not stored refs pending

Photometric redshifts with machine learning, lights and shadows on a complex data science use case

Giuseppe Longo, Giuseppe Riccio, Massimo Brescia, Oleksandra Razim, Stefano Cavuoti, Valeria Amaro

arxiv:2104.06774 v1 · 2021-04-14 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WLKUARCZXP23VYPYHMGUSEQJ7Z}

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

Photometric Redshift Predictions with a Neural Network for DESI Quasars

Receipt and verification

First computed	2026-07-05T02:32:09.324074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2d5404459bbf5bae1f83b0d491209fe5f642fa2feadebb5cc83226be07311a4

Aliases

arxiv: 2104.06774 · arxiv_version: 2104.06774v1 · doi: 10.48550/arxiv.2104.06774 · pith_short_12: WLKUARCZXP23 · pith_short_16: WLKUARCZXP23VYPY · pith_short_8: WLKUARCZ

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/WLKUARCZXP23VYPYHMGUSEQJ7Z \
  | 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: b2d5404459bbf5bae1f83b0d491209fe5f642fa2feadebb5cc83226be07311a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d236e5f0cd592cace6a85e48004a53c50d8cb3608684216d1249e0e81df884d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-04-14T11:06:03Z",
    "title_canon_sha256": "57a99c8307293ed4a592db8f8382e4a2fdd87fe3fcd5c8c4cd34bcb1713101b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.06774",
    "kind": "arxiv",
    "version": 1
  }
}