Pith Number

pith:JJVQT4NB

pith:2021:JJVQT4NBQBRDP2BLUYUR7NVVPD

not attested not anchored not stored refs pending

High-redshift quasars and their host galaxies II: multiphase gas and stellar kinematics

Alessandro Lupi, Joseph Silk, Marta Volonteri, Roberto Decarli, Stefano Bovino

arxiv:2109.01679 v2 · 2021-09-03 · 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{JJVQT4NBQBRDP2BLUYUR7NVVPD}

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	2026-07-05T03:49:18.238612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a6b09f1a1806237e82ba6291fb6b578f2a8bcd4bc3fa3cdb5e4a6de18df5b1e

Aliases

arxiv: 2109.01679 · arxiv_version: 2109.01679v2 · doi: 10.48550/arxiv.2109.01679 · pith_short_12: JJVQT4NBQBRD · pith_short_16: JJVQT4NBQBRDP2BL · pith_short_8: JJVQT4NB

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/JJVQT4NBQBRDP2BLUYUR7NVVPD \
  | 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: 4a6b09f1a1806237e82ba6291fb6b578f2a8bcd4bc3fa3cdb5e4a6de18df5b1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24604d7ea14890371b8a2d9f75c4d72d25b70ba77bb92bf79839abe56d1e504c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-03T18:00:03Z",
    "title_canon_sha256": "d86057b59ce819afeb9c09cde5c5a0f228748454a94b2322d626e4d78be18a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.01679",
    "kind": "arxiv",
    "version": 2
  }
}