Pith Number

pith:KY7UGXK3

pith:2003:KY7UGXK3H7TCP4UY3265SZI2TU

not attested not anchored not stored refs pending

The Merger QSO 3C 48 and its Host Galaxy in the Near Infrared

((1) 1. Physikalisches Institut, A. Eckart (1), C. Straubmeier (1), Germany), J. Scharwaechter (1), J. Zuther (1), Koeln, M. Krips (1), S. Pfalzner (1), Universitaet zu Koeln

arxiv:astro-ph/0311074 v1 · 2003-11-04 · 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{KY7UGXK3H7TCP4UY3265SZI2TU}

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	2026-05-18T00:52:34.935910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

563f435d5b3fe627f298debdd9651a9d218548dba450d02f2cdc682ed6457c6a

Aliases

arxiv: astro-ph/0311074 · arxiv_version: astro-ph/0311074v1 · doi: 10.48550/arxiv.astro-ph/0311074 · pith_short_12: KY7UGXK3H7TC · pith_short_16: KY7UGXK3H7TCP4UY · pith_short_8: KY7UGXK3

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/KY7UGXK3H7TCP4UY3265SZI2TU \
  | 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: 563f435d5b3fe627f298debdd9651a9d218548dba450d02f2cdc682ed6457c6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc2b6997ec74bb314be06e5c37aa0e32cfbe76d207a6527f91d91b63a9bb76eb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-11-04T08:58:49Z",
    "title_canon_sha256": "4a1499c0484c1888be28e8c97a8d90c8e5ef2d12e5d8967fb3ac8fb0a749aa11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0311074",
    "kind": "arxiv",
    "version": 1
  }
}