Pith Number

pith:NTCY6WQ5

pith:2017:NTCY6WQ5BUGSNUHOEUFRQIX3FF

not attested not anchored not stored refs pending

Jet precession driven by a supermassive black hole binary system in the BL Lac object PG 1553+113

Anderson Caproni (NAT-Universidade Cruzeiro do Sul), Hektor Monteiro (UNIFEI), Juliana Cristina Motter (IAG/USP), Zulema Abraham (IAG/USP)

arxiv:1712.06881 v1 · 2017-12-19 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTCY6WQ5BUGSNUHOEUFRQIX3FF}

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	2026-05-18T00:27:10.461173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc58f5a1d0d0d26d0ee250b1822fb2955fef104e0cac63643465b9ec7b31a66

Aliases

arxiv: 1712.06881 · arxiv_version: 1712.06881v1 · doi: 10.48550/arxiv.1712.06881 · pith_short_12: NTCY6WQ5BUGS · pith_short_16: NTCY6WQ5BUGSNUHO · pith_short_8: NTCY6WQ5

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/NTCY6WQ5BUGSNUHOEUFRQIX3FF \
  | 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: 6cc58f5a1d0d0d26d0ee250b1822fb2955fef104e0cac63643465b9ec7b31a66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f95551837c49fd2fe04fc6e4af366a1c9fc713636aa67c75696d5876ee84881a",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-19T11:50:11Z",
    "title_canon_sha256": "77ad0a5117f132793fab036e74089bdf03406489586680ed21229ac99d440e1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.06881",
    "kind": "arxiv",
    "version": 1
  }
}