Pith Number

pith:QHNWDSWV

pith:2019:QHNWDSWVF3XLHBOI6WD4HBP3QM

not attested not anchored not stored refs pending

Proper motion in lensed radio jets at redshift 3: a possible dual super-massive black hole system in the early Universe

C. Spingola, D. Massari, J. P. McKean, L. V. E. Koopmans

arxiv:1908.11756 v1 · 2019-08-30 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHNWDSWVF3XLHBOI6WD4HBP3QM}

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	2026-07-05T00:09:04.030558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81db61cad52eeeb385c8f587c385fb832f3f5df0b7aa92e2d0586402e802e90e

Aliases

arxiv: 1908.11756 · arxiv_version: 1908.11756v1 · doi: 10.48550/arxiv.1908.11756 · pith_short_12: QHNWDSWVF3XL · pith_short_16: QHNWDSWVF3XLHBOI · pith_short_8: QHNWDSWV

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/QHNWDSWVF3XLHBOI6WD4HBP3QM \
  | 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: 81db61cad52eeeb385c8f587c385fb832f3f5df0b7aa92e2d0586402e802e90e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e93d2d934089b22a1d0bedf14b748f2d816686cb8b7eebb1649dcf65b8dae69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-30T14:20:19Z",
    "title_canon_sha256": "4ca292fa235e9f9471bb83426dd426fae96257d528f2547ce05d0d0283dfb812"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.11756",
    "kind": "arxiv",
    "version": 1
  }
}