Pith Number

pith:RLR7OW3F

pith:2009:RLR7OW3FB5H3WPLDNZFNI5GDRX

not attested not anchored not stored refs pending

A 31 GHz Survey of Low-Frequency Selected Radio Sources

A. C. S. Readhead, B. S. Mason, J. L. Sievers, J. R. Bond, L. C. Weintraub, M. C. Shepherd, S. T. Myers, T. J. Pearson

arxiv:0901.4330 v3 · 2009-01-27 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RLR7OW3FB5H3WPLDNZFNI5GDRX}

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	2026-05-18T04:29:17.103713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ae3f75b650f4fbb3d636e4ad474c38dd4df765f7d40d0b1d85cc1d35169eb05

Aliases

arxiv: 0901.4330 · arxiv_version: 0901.4330v3 · doi: 10.48550/arxiv.0901.4330 · pith_short_12: RLR7OW3FB5H3 · pith_short_16: RLR7OW3FB5H3WPLD · pith_short_8: RLR7OW3F

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/RLR7OW3FB5H3WPLDNZFNI5GDRX \
  | 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: 8ae3f75b650f4fbb3d636e4ad474c38dd4df765f7d40d0b1d85cc1d35169eb05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1134101474f63d2f64f68d453a25d2a0191d782225f0551b1855d1613357f1dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-27T20:43:09Z",
    "title_canon_sha256": "65ae85f9c827a1f62a6d8a3f1757d2a386ecc58809ffd7eb1aa594837bd29104"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4330",
    "kind": "arxiv",
    "version": 3
  }
}