Pith Number

pith:KW7LAXZ3

pith:2001:KW7LAXZ3FSLI4QL542IDUKVESA

not attested not anchored not stored refs pending

First results from the Isaac Newton Telescope Wide Angle Survey: The z>5 quasar survey

Cambridge), M.J. Irwin, R.G. McMahon, R.G. Sharp, S.T. Hodgkin (Institute of Astronomy

arxiv:astro-ph/0103079 v2 · 2001-03-05 · 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{KW7LAXZ3FSLI4QL542IDUKVESA}

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	2026-05-18T00:16:24.429037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55beb05f3b2c968e417de6903a2aa4903ee5b33708e4f698ab6ee81a1c1b4d0f

Aliases

arxiv: astro-ph/0103079 · arxiv_version: astro-ph/0103079v2 · doi: 10.48550/arxiv.astro-ph/0103079 · pith_short_12: KW7LAXZ3FSLI · pith_short_16: KW7LAXZ3FSLI4QL5 · pith_short_8: KW7LAXZ3

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/KW7LAXZ3FSLI4QL542IDUKVESA \
  | 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: 55beb05f3b2c968e417de6903a2aa4903ee5b33708e4f698ab6ee81a1c1b4d0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f792ed056bbcea42b50ff002bdcfa66504e188cba4840e1b58f69555eb9b6982",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-03-05T19:40:42Z",
    "title_canon_sha256": "9a65ba2ebbba64202d578309879eb538581b78ec4a1298567d34d74f3790d601"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0103079",
    "kind": "arxiv",
    "version": 2
  }
}