Pith Number

pith:7FQKCTU3

pith:2013:7FQKCTU3CVMGUUGZRFKVCFTXKY

not attested not anchored not stored refs pending

A sample of small size compact steep-spectrum radio sources. VLBI images and VLA polarization at 5 GHz

((1) Bologna University, 2), (2) INAF-IRA Bologna, C. Fanti (2), C. Stanghellini (2), D. Dallacasa (1, Italy, Italy), M. Orienti (1, R. Fanti (2)

arxiv:1304.6261 v1 · 2013-04-23 · 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{7FQKCTU3CVMGUUGZRFKVCFTXKY}

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	2026-05-18T01:50:23.144748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f960a14e9b15586a50d98955511677563336553aafae90047b73ed8439a81b16

Aliases

arxiv: 1304.6261 · arxiv_version: 1304.6261v1 · doi: 10.48550/arxiv.1304.6261 · pith_short_12: 7FQKCTU3CVMG · pith_short_16: 7FQKCTU3CVMGUUGZ · pith_short_8: 7FQKCTU3

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/7FQKCTU3CVMGUUGZRFKVCFTXKY \
  | 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: f960a14e9b15586a50d98955511677563336553aafae90047b73ed8439a81b16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "828cb61e6d8d43fc57f38a5853cbe9ffdfb32d182f69d23b7f3c3a4a0a614fc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-23T12:33:44Z",
    "title_canon_sha256": "9459a6a4ecd92bbb6dea1d7a962f3df3c516219eae663030625d03cd6cb484a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6261",
    "kind": "arxiv",
    "version": 1
  }
}