Pith Number

pith:NTNC2HW6

pith:2003:NTNC2HW6GDSLDZAUPQDBLCFUXO

not attested not anchored not stored refs pending

9C: A Survey of Radio Sources at 15 GHz with the Ryle Telescope

Angela C. Taylor, Elizabeth M. Waldram, Guy G. Pooley, Keith J. B. Grainge, Michael E. Jones, Paul F. Scott, Richard D. E. Saunders

arxiv:astro-ph/0304275 v1 · 2003-04-15 · 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{NTNC2HW6GDSLDZAUPQDBLCFUXO}

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	2026-07-04T16:36:51.748109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cda2d1ede30e4b1e4147c061588b4bb858a895d2b43b71e39537aac64cdf357

Aliases

arxiv: astro-ph/0304275 · arxiv_version: astro-ph/0304275v1 · doi: 10.48550/arxiv.astro-ph/0304275 · pith_short_12: NTNC2HW6GDSL · pith_short_16: NTNC2HW6GDSLDZAU · pith_short_8: NTNC2HW6

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/NTNC2HW6GDSLDZAUPQDBLCFUXO \
  | 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: 6cda2d1ede30e4b1e4147c061588b4bb858a895d2b43b71e39537aac64cdf357

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3664869d1491b6a1362aa821feb669f9f8545872469c092c95a0af633ed9649b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-15T10:27:58Z",
    "title_canon_sha256": "4a5d0886d1bf356e62031e1fb142b00267e4caaa111db869325bd521250eb323"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304275",
    "kind": "arxiv",
    "version": 1
  }
}