Pith Number

pith:B7A7HOOU

pith:2017:B7A7HOOUQXVFGUYD2EW5IY3URT

not attested not anchored not stored refs pending

Narrow head-tail radio galaxies at very high resolution

Beatrice Terni de Gregory, Federica Govoni, Gabriele Giovannini, Luigina Feretti, Matteo Murgia, Rick A. Perley, Valentina Vacca

arxiv:1709.00223 v2 · 2017-09-01 · astro-ph.GA · 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{B7A7HOOUQXVFGUYD2EW5IY3URT}

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	2026-05-18T00:27:43.723787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fc1f3b9d485ea535303d12dd463748cc8c0239a8cc6503507f84dc5f628f796

Aliases

arxiv: 1709.00223 · arxiv_version: 1709.00223v2 · doi: 10.48550/arxiv.1709.00223 · pith_short_12: B7A7HOOUQXVF · pith_short_16: B7A7HOOUQXVFGUYD · pith_short_8: B7A7HOOU

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/B7A7HOOUQXVFGUYD2EW5IY3URT \
  | 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: 0fc1f3b9d485ea535303d12dd463748cc8c0239a8cc6503507f84dc5f628f796

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58cbe8b10ba872cee22cd47787ea1bc21073b2b5d49d297e411dbcd7c2d4a599",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-01T09:54:46Z",
    "title_canon_sha256": "7cb9d01e13f99828db55d35a3fe13241eb43f7c7910052c3367cac21412a25c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.00223",
    "kind": "arxiv",
    "version": 2
  }
}