Pith Number

pith:3OBXDYJP

pith:1999:3OBXDYJPJ56ZWWJJMUS37573QK

not attested not anchored not stored refs pending

Photometric Redshifts: A Perspective from an Old-Timer on Its Past, Present, and Potential

David C. Koo (UCO/Lick Observatory, UCSC)

arxiv:astro-ph/9907273 v1 · 1999-07-20 · 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{3OBXDYJPJ56ZWWJJMUS37573QK}

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

2 papers in Pith

pop-cosmos: Galaxy size evolution across structural and star-formation classifications in COSMOS-Web

pop-cosmos: Disentangling galaxy properties from observables using data-driven approaches

Receipt and verification

First computed	2026-07-04T14:17:00.211096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db8371e12f4f7d9b59296525bff7fb82afb58787d7f44421769f7d2f92513d14

Aliases

arxiv: astro-ph/9907273 · arxiv_version: astro-ph/9907273v1 · doi: 10.48550/arxiv.astro-ph/9907273 · pith_short_12: 3OBXDYJPJ56Z · pith_short_16: 3OBXDYJPJ56ZWWJJ · pith_short_8: 3OBXDYJP

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/3OBXDYJPJ56ZWWJJMUS37573QK \
  | 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: db8371e12f4f7d9b59296525bff7fb82afb58787d7f44421769f7d2f92513d14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d152080ba3dfa23ce5940299fcfa81e200e3116e09153da6bde1705695d17f3c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-20T21:10:43Z",
    "title_canon_sha256": "c3353b698dd053c346ad9a4950dac1ee0a4eb296a98daea087b365c9de2239ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907273",
    "kind": "arxiv",
    "version": 1
  }
}