Pith Number

pith:C57JWNJ7

pith:2018:C57JWNJ7UDVDEQFTLYIC55II5Z

not attested not anchored not stored refs pending

Frequency-Dependent Core Shifts in Ultracompact Quasars

A. B. Pushkarev, A. P. Lobanov, A. V. Ipatov, A. V. Plavin, P. A. Voitsik, Y. Y. Kovalev

arxiv:1809.10011 v1 · 2018-09-26 · 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{C57JWNJ7UDVDEQFTLYIC55II5Z}

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	2026-05-18T00:00:34.736612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

177e9b353fa0ea3240b35e102ef508ee7ece5134ee78de6a459fc53ee838e47a

Aliases

arxiv: 1809.10011 · arxiv_version: 1809.10011v1 · doi: 10.48550/arxiv.1809.10011 · pith_short_12: C57JWNJ7UDVD · pith_short_16: C57JWNJ7UDVDEQFT · pith_short_8: C57JWNJ7

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/C57JWNJ7UDVDEQFTLYIC55II5Z \
  | 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: 177e9b353fa0ea3240b35e102ef508ee7ece5134ee78de6a459fc53ee838e47a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af0091f13289e88595b1869825a32977491ca8921ee6869008fcea01d502c738",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-26T14:15:09Z",
    "title_canon_sha256": "2f2af72a034fb4c6cc80a1d0e1bdfc0fb86bcff2155b6cfee7182a0e180c4bf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10011",
    "kind": "arxiv",
    "version": 1
  }
}