Pith Number

pith:3JU3Y73X

pith:2019:3JU3Y73XSMECBHZZTEMWHSIYMD

not attested not anchored not stored refs pending

The optically-selected 1.4-GHz quasar luminosity function below 1 mJy

Eliab Malefahlo, Jonathan T. L. Zwart, Mario G. Santos, Matt J. Jarvis, Sarah V. White

arxiv:1908.05316 v4 · 2019-08-14 · 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{3JU3Y73XSMECBHZZTEMWHSIYMD}

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	2026-07-05T00:34:42.782497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da69bc7f779308209f39991963c91860f0efc554c1cf131a778b93e2544fe6a5

Aliases

arxiv: 1908.05316 · arxiv_version: 1908.05316v4 · doi: 10.48550/arxiv.1908.05316 · pith_short_12: 3JU3Y73XSMEC · pith_short_16: 3JU3Y73XSMECBHZZ · pith_short_8: 3JU3Y73X

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/3JU3Y73XSMECBHZZTEMWHSIYMD \
  | 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: da69bc7f779308209f39991963c91860f0efc554c1cf131a778b93e2544fe6a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "193691aab4684a17d59ff6367f091e1629ad59562b7bf3a4248fff59e2eabc9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-14T19:11:25Z",
    "title_canon_sha256": "aac524ade056e30b40fb68c78788d4b2ff27febcee6bc2ea1ab3a1d00a632fcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05316",
    "kind": "arxiv",
    "version": 4
  }
}