Pith Number

pith:AIJNHVWJ

pith:2009:AIJNHVWJMFLFL3AD42HMAXJ5F4

not attested not anchored not stored refs pending

Sources of the Radio Background Considered

A. Lawrence, J. Singal, L. Stawarz, V. Petrosian

arxiv:0909.1997 v3 · 2009-09-10 · 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{AIJNHVWJMFLFL3AD42HMAXJ5F4}

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	2026-05-18T02:24:47.228157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0212d3d6c9615655ec03e68ec05d3d2f3122db797bf88c88f6d7319ba74e419b

Aliases

arxiv: 0909.1997 · arxiv_version: 0909.1997v3 · doi: 10.48550/arxiv.0909.1997 · pith_short_12: AIJNHVWJMFLF · pith_short_16: AIJNHVWJMFLFL3AD · pith_short_8: AIJNHVWJ

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/AIJNHVWJMFLFL3AD42HMAXJ5F4 \
  | 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: 0212d3d6c9615655ec03e68ec05d3d2f3122db797bf88c88f6d7319ba74e419b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f37d44d8af5c205958321f483811ecc69f96fb5eb5bb1de8be54754ee96c3db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-10T19:44:44Z",
    "title_canon_sha256": "024a22d8f7688bfed5b562eaae781a01765b7334662f8747ad5c8b6b16488b1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1997",
    "kind": "arxiv",
    "version": 3
  }
}