Pith Number

pith:FNPJ6W7K

pith:2018:FNPJ6W7KC3QL6KCLTB7C7QBLQS

not attested not anchored not stored refs pending

The Blazar PG 1553+113 as a Binary System of Supermassive Black Holes

Alfonso Cavaliere, Andrea Argan, Marco Tavani, Pere Munar-Adrover

arxiv:1801.03335 v2 · 2018-01-10 · 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{FNPJ6W7KC3QL6KCLTB7C7QBLQS}

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.

Cited by

1 paper in Pith

Tracking down the broadband polarimetric properties of PG 1553+113

Receipt and verification

First computed	2026-05-18T00:22:56.777751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b5e9f5bea16e0bf284b987e2fc02b848997200392457a9aacd265f8bb92807e

Aliases

arxiv: 1801.03335 · arxiv_version: 1801.03335v2 · doi: 10.48550/arxiv.1801.03335 · pith_short_12: FNPJ6W7KC3QL · pith_short_16: FNPJ6W7KC3QL6KCL · pith_short_8: FNPJ6W7K

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/FNPJ6W7KC3QL6KCLTB7C7QBLQS \
  | 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: 2b5e9f5bea16e0bf284b987e2fc02b848997200392457a9aacd265f8bb92807e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79fbc5d08973622198d8a706e0b80ad95de1b31db05d355965fcf2753f104089",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-01-10T12:18:14Z",
    "title_canon_sha256": "d690b40dee0f87abfcc65c6d3f37b4d3f48502d52d87db5ad277293753d62ab8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03335",
    "kind": "arxiv",
    "version": 2
  }
}