Pith Number

pith:S4ZI3ABZ

pith:1997:S4ZI3ABZT6UIT3FL7EG7YIE7N5

not attested not anchored not stored refs pending

ROSAT Public PSPC Observations in the Las Campanas Redshift Survey

D. L. Tucker (Fermilab), G. Hasinger (AIP), H. Lin (Toronto)

arxiv:astro-ph/9704209 v1 · 1997-04-22 · 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{S4ZI3ABZT6UIT3FL7EG7YIE7N5}

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	2026-05-18T01:40:17.644122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97328d80399fa889ecabf90dfc209f6f7b539399c530f7659a744d8b60c6a0fe

Aliases

arxiv: astro-ph/9704209 · arxiv_version: astro-ph/9704209v1 · doi: 10.48550/arxiv.astro-ph/9704209 · pith_short_12: S4ZI3ABZT6UI · pith_short_16: S4ZI3ABZT6UIT3FL · pith_short_8: S4ZI3ABZ

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/S4ZI3ABZT6UIT3FL7EG7YIE7N5 \
  | 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: 97328d80399fa889ecabf90dfc209f6f7b539399c530f7659a744d8b60c6a0fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83daa634695f6d30cd7e26af09cf67f4ff5137368c213c45dcad1013a88bbcf6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-22T00:23:43Z",
    "title_canon_sha256": "ce51231fb53aa19170ed4997e1bcc1461610f89ac9fae1766dce6f69920b7ab1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704209",
    "kind": "arxiv",
    "version": 1
  }
}