Pith Number

pith:BJRXFLKQ

pith:2009:BJRXFLKQMCD5RKDKE75O3IT3M3

not attested not anchored not stored refs pending

The SPECFIND V2.0 catalogue of radio cross-identifications and spectra. SPECFIND meets the Virtual Observatory

B. Gassmann, B. Vollmer, F. Bonnarel, F. Genova, F. Ochsenbein (CDS, M. Louys, Observatoire de Strasbourg), P. Dubois, S. Derriere, T. Boch

arxiv:0912.4174 v1 · 2009-12-21 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BJRXFLKQMCD5RKDKE75O3IT3M3}

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	2026-05-18T02:10:14.962714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a6372ad506087d8a86a27faeda27b66fc697e42b1034384e17edaa5b236ea98

Aliases

arxiv: 0912.4174 · arxiv_version: 0912.4174v1 · doi: 10.48550/arxiv.0912.4174 · pith_short_12: BJRXFLKQMCD5 · pith_short_16: BJRXFLKQMCD5RKDK · pith_short_8: BJRXFLKQ

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/BJRXFLKQMCD5RKDKE75O3IT3M3 \
  | 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: 0a6372ad506087d8a86a27faeda27b66fc697e42b1034384e17edaa5b236ea98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19a4cff69e1d38259ce6018bd4df8c660c3c5266782a218c61e1c29d8a5e952a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-21T14:19:00Z",
    "title_canon_sha256": "5d304ae8241e2d556dc0047d691d0c721e320b675bdddc02bece2018c05b7e18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4174",
    "kind": "arxiv",
    "version": 1
  }
}