Pith Number

pith:3ZRUSGBC

pith:1999:3ZRUSGBCZXWBSEBHC7QMHE3LQH

not attested not anchored not stored refs pending

The Hubble Deep Field South - STIS Imaging

A. M. Gonnella, A. S. Fruchter, B. R. Espey, C. L. Martin, C. M. Carollo, H. C. Ferguson, H. I. Teplitz, I. Dashevsky, J. Christensen, J. P. Gardner, J. Wilson, K. C. Sahu, M. E. Dickinson, M. E. Kaiser, R. A. Gonzalez-Lopezlira, R. E. Williams, R. N. Hook, S. A. Baum, S. Savaglio, T. E. Smith, T. M. Brown

arxiv:astro-ph/9912167 v1 · 1999-12-08 · 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{3ZRUSGBCZXWBSEBHC7QMHE3LQH}

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	2026-07-04T16:11:59.415746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de63491822cdec19102717e0c3936b81e2b4eebaea1e21cb7f4d66ee6ba6104f

Aliases

arxiv: astro-ph/9912167 · arxiv_version: astro-ph/9912167v1 · doi: 10.48550/arxiv.astro-ph/9912167 · pith_short_12: 3ZRUSGBCZXWB · pith_short_16: 3ZRUSGBCZXWBSEBH · pith_short_8: 3ZRUSGBC

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/3ZRUSGBCZXWBSEBHC7QMHE3LQH \
  | 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: de63491822cdec19102717e0c3936b81e2b4eebaea1e21cb7f4d66ee6ba6104f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13dcb31d022ae6ab20104ebaf69e34986bec746879729c50bf26121df3068fb4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-08T16:15:13Z",
    "title_canon_sha256": "8c581499c5cd54d6072f49ab43e8823954951c88b40b3e5b07a22caf3ecc755f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912167",
    "kind": "arxiv",
    "version": 1
  }
}