Pith Number

pith:U7ZB2L4L

pith:2004:U7ZB2L4L2BXTLGMSSCA5P2CG42

not attested not anchored not stored refs pending

The Gemini Deep Deep Survey: I. Introduction to the Survey, Catalogs and Composite Spectra

David Crampton, Hsiao-Wen Chen, Inger Jorgensen, Isobel M. Hook, Karl Glazebrook, Kathy Roth, Patrick J. McCarthy, R. G. Carlberg (The GDDS Collaboration), Richard Murowinski, Roberto G. Abraham, Ronald O. Marzke, Sandra Savaglio

arxiv:astro-ph/0402436 v1 · 2004-02-18 · 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{U7ZB2L4L2BXTLGMSSCA5P2CG42}

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	2026-07-04T16:43:04.134670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7f21d2f8bd06f3599929081d7e846e6bbf2427a5e61186eb62a605f80608825

Aliases

arxiv: astro-ph/0402436 · arxiv_version: astro-ph/0402436v1 · doi: 10.48550/arxiv.astro-ph/0402436 · pith_short_12: U7ZB2L4L2BXT · pith_short_16: U7ZB2L4L2BXTLGMS · pith_short_8: U7ZB2L4L

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/U7ZB2L4L2BXTLGMSSCA5P2CG42 \
  | 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: a7f21d2f8bd06f3599929081d7e846e6bbf2427a5e61186eb62a605f80608825

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d80497b9dfa05c7c5a14e15d95007363fe78f9cdbae87f621a96251797794db",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-18T15:14:05Z",
    "title_canon_sha256": "cc05b36cd9d3f642409dff9665a3ba39f5414eec6f63311fceae4dadafbdbf8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402436",
    "kind": "arxiv",
    "version": 1
  }
}