Pith Number

pith:UZ4COBLR

pith:2021:UZ4COBLRLF2RUPT6Y6LP3P5GHE

not attested not anchored not stored refs pending

The Million Quasars (Milliquas) v7.2 Catalogue, now with VLASS associations. The inclusion of SDSS-DR16Q quasars is detailed

Eric Wim Flesch

arxiv:2105.12985 v1 · 2021-05-27 · 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{UZ4COBLRLF2RUPT6Y6LP3P5GHE}

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

3 papers in Pith

The Galactic Squeeze: How Aggregate and Highly Dynamical Environments Shape Star Formation in the Local Universe

Cosmic Duets I. High-spatial resolution spectroscopy of dual and lensed AGN with MUSE-NFM

Kinematic Stratification in Extremely Red Quasars Revealed by JWST

Receipt and verification

First computed	2026-07-05T02:43:55.986811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a67827057159751a3e7ec796fdbfa63907d1f6ad0b014e4c27714d4c1f651b70

Aliases

arxiv: 2105.12985 · arxiv_version: 2105.12985v1 · doi: 10.48550/arxiv.2105.12985 · pith_short_12: UZ4COBLRLF2R · pith_short_16: UZ4COBLRLF2RUPT6 · pith_short_8: UZ4COBLR

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/UZ4COBLRLF2RUPT6Y6LP3P5GHE \
  | 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: a67827057159751a3e7ec796fdbfa63907d1f6ad0b014e4c27714d4c1f651b70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38c89e04b581239d695e7de310d7a651988bc0349b233986dd945aa172b82e05",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-05-27T08:02:01Z",
    "title_canon_sha256": "82f3cbbee97c319fb5dcfbd84dffbc198328dfb2ec99ebb0b30a9a819f381907"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.12985",
    "kind": "arxiv",
    "version": 1
  }
}