Pith Number

pith:3GOYWXQN

pith:2000:3GOYWXQNU3575PHUTXWVSPXOK7

not attested not anchored not stored refs pending

A Submillimeter Selected Quasar in the Field of Abell 478

K.K. Knudsen, P.P. van der Werf, W. Jaffe (LEIDEN OBSERVATORY)

arxiv:astro-ph/0009024 v1 · 2000-09-01 · 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{3GOYWXQNU3575PHUTXWVSPXOK7}

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	2026-05-18T00:37:01.088281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d99d8b5e0da6fbfebcf49ded593eee57edcfe6f276a900ccd3fb6da2eee08cb7

Aliases

arxiv: astro-ph/0009024 · arxiv_version: astro-ph/0009024v1 · doi: 10.48550/arxiv.astro-ph/0009024 · pith_short_12: 3GOYWXQNU357 · pith_short_16: 3GOYWXQNU3575PHU · pith_short_8: 3GOYWXQN

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/3GOYWXQNU3575PHUTXWVSPXOK7 \
  | 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: d99d8b5e0da6fbfebcf49ded593eee57edcfe6f276a900ccd3fb6da2eee08cb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da8a19a43ccb059eb19e0d3e0d0a418812971d3b5b99aa50debf32379ab61479",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-09-01T17:26:53Z",
    "title_canon_sha256": "b1cf8b8145574d10a6019faa963f0bd3d0d2b1a1fa88ca8b2f2d1890c5ca60ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0009024",
    "kind": "arxiv",
    "version": 1
  }
}