Pith Number

pith:NS3RQOBD

pith:1997:NS3RQOBDDMW3QE5WSH5CJ7TCTL

not attested not anchored not stored refs pending

LBDS 53W091: An Old red Galaxy at z=1.552

Arjun Dey (NOAO/KPNO), Daniel Stern (UCB), Hyron Spinrad (UC Berkeley), James Dunlop (U Edinburgh), John Peacock (ROE), Raul Jimenez (ROE), Rogier Windhorst (ASU)

arxiv:astro-ph/9702233 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{NS3RQOBDDMW3QE5WSH5CJ7TCTL}

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	2026-05-18T01:07:38.649379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cb71838231b2db813b691fa24fe629af26f3d2f62c3b5781a6e12214bd22f7e

Aliases

arxiv: astro-ph/9702233 · arxiv_version: astro-ph/9702233v1 · doi: 10.48550/arxiv.astro-ph/9702233 · pith_short_12: NS3RQOBDDMW3 · pith_short_16: NS3RQOBDDMW3QE5W · pith_short_8: NS3RQOBD

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/NS3RQOBDDMW3QE5WSH5CJ7TCTL \
  | 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: 6cb71838231b2db813b691fa24fe629af26f3d2f62c3b5781a6e12214bd22f7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9aa1e8c96a10a9b54a7b74f2b7f2d7c691453bdbfac08ae30091cae301c5e896",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-02-27T03:43:15Z",
    "title_canon_sha256": "473cbcae516a0580fb76f342194093a6afe48736f5e117509b142d4909abcfa8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9702233",
    "kind": "arxiv",
    "version": 1
  }
}