Pith Number

pith:QTHOHDML

pith:1998:QTHOHDML63UTBTXI4Y3MLCSCMD

not attested not anchored not stored refs pending

A Deep VLA survey at 20cm of the ISO ELAIS survey regions

2), (2) Osservatorio Astronomico di Bologna, A. Franceschini, A. Lawrence, B. Rocca-Volmerange ((1) IoA, Cambridge, C. Cesarsky, C. Gruppioni (4), D. Lemke, G. Miley (3), Italy (3) Leiden Observatory, J-L. Puget, L.Danese, London, M. Rowan-Robinson (4), P. Ciliegi (1, R. Genzel, R.G. McMahon (1), S. Oliver, The Netherlands (4) Imperial College, UK, UK)

arxiv:astro-ph/9805353 v1 · 1998-05-28 · 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{QTHOHDML63UTBTXI4Y3MLCSCMD}

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	2026-07-04T16:06:42.866324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84cee38d8bf6e930cee8e636c58a4260e4334e111b0b402a5b0a92e2e613b691

Aliases

arxiv: astro-ph/9805353 · arxiv_version: astro-ph/9805353v1 · doi: 10.48550/arxiv.astro-ph/9805353 · pith_short_12: QTHOHDML63UT · pith_short_16: QTHOHDML63UTBTXI · pith_short_8: QTHOHDML

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/QTHOHDML63UTBTXI4Y3MLCSCMD \
  | 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: 84cee38d8bf6e930cee8e636c58a4260e4334e111b0b402a5b0a92e2e613b691

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f45e0fabe5d4c2e0840b1ee0a85ecb917ea2a535e6ca411520c21df33ef48efc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-28T19:28:06Z",
    "title_canon_sha256": "8e9c087a5200032e898156059b421ee2cee2dda5c9a78bc2fa0cbb60ba327d17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805353",
    "kind": "arxiv",
    "version": 1
  }
}