Pith Number

pith:ZY7VRZ5T

pith:1997:ZY7VRZ5TNCMKQG7JZOOOECH522

not attested not anchored not stored refs pending

Counts and Colors of Faint Galaxies in the U and R Bands

B. T. Soifer (Caltech), David W. Hogg, Ian Smail (Durham), James K. McCarthy, Judith G. Cohen, Michael A. Pahre, Roger Blandford (Caltech)

arxiv:astro-ph/9702241 v1 · 1997-02-27 · 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{ZY7VRZ5TNCMKQG7JZOOOECH522}

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	2026-05-18T01:40:18.083220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce3f58e7b36898a81be9cb9ce208fdd6b93565d46626334f300c94e2d91d8765

Aliases

arxiv: astro-ph/9702241 · arxiv_version: astro-ph/9702241v1 · doi: 10.48550/arxiv.astro-ph/9702241 · pith_short_12: ZY7VRZ5TNCMK · pith_short_16: ZY7VRZ5TNCMKQG7J · pith_short_8: ZY7VRZ5T

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/ZY7VRZ5TNCMKQG7JZOOOECH522 \
  | 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: ce3f58e7b36898a81be9cb9ce208fdd6b93565d46626334f300c94e2d91d8765

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08aec557906ffcea99a381a78b7b0e28238c4acd2aad6b6d6e32a6e95a4919c3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-02-27T19:42:53Z",
    "title_canon_sha256": "702f4cec521c488ced49711bbbe55af2f53f324bac4db660c855cf2d5fb6acbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9702241",
    "kind": "arxiv",
    "version": 1
  }
}