Pith Number

pith:EEUKER7I

pith:2004:EEUKER7I55MNENQBAXEMOZYKEU

not attested not anchored not stored refs pending

Gemini imaging of QSO host galaxies at z~2

(2) Dominion Astrophysical Observatory, (3) Australia Telescope National Facility, (4) Durham University, (5) Oxford University, (6) Liverpool John Moores University), Brian Boyle (3), David Schade (2), Lance Miller (5), Robert Smith (6) ((1) Anglo-Australian Observatory, Scott Croom (1), Tom Shanks (4)

arxiv:astro-ph/0401442 v1 · 2004-01-21 · 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{EEUKER7I55MNENQBAXEMOZYKEU}

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	2026-05-18T04:27:04.651808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2128a247e8ef58d2360105c8c7670a2518e3f63468c53d69cd9b137c32037162

Aliases

arxiv: astro-ph/0401442 · arxiv_version: astro-ph/0401442v1 · doi: 10.48550/arxiv.astro-ph/0401442 · pith_short_12: EEUKER7I55MN · pith_short_16: EEUKER7I55MNENQB · pith_short_8: EEUKER7I

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/EEUKER7I55MNENQBAXEMOZYKEU \
  | 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: 2128a247e8ef58d2360105c8c7670a2518e3f63468c53d69cd9b137c32037162

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9f6020efb61832e8030972015a14a1a585c980ca1c73a5d2bd6afbd01f1abed",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-01-21T22:39:52Z",
    "title_canon_sha256": "d12e30e8d51d0bca5a1d655902edc2cfac487458f55c1a9d9827402c4b141fd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0401442",
    "kind": "arxiv",
    "version": 1
  }
}