Pith Number

pith:WKLNVVRC

pith:2015:WKLNVVRCEMIANF4PZMTLZXYGMP

not attested not anchored not stored refs pending

A low-luminosity type-1 QSO sample; III. Optical spectroscopic properties and activity classification

A. Eckart, C. Shan, E. Tremou, J. Zuther, M. Garcia-Marin, M. Valencia-Schneider, M. Vitale

arxiv:1506.09053 v1 · 2015-06-30 · 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{WKLNVVRCEMIANF4PZMTLZXYGMP}

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	2026-05-18T01:35:07.286108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b296dad622231006978fcb26bcdf0663e5b292726318fe2f5b355604563929af

Aliases

arxiv: 1506.09053 · arxiv_version: 1506.09053v1 · doi: 10.48550/arxiv.1506.09053 · pith_short_12: WKLNVVRCEMIA · pith_short_16: WKLNVVRCEMIANF4P · pith_short_8: WKLNVVRC

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/WKLNVVRCEMIANF4PZMTLZXYGMP \
  | 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: b296dad622231006978fcb26bcdf0663e5b292726318fe2f5b355604563929af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46d46bf44e38732890583d014461b14a5ad18e89ca844c1c4c1c485836ec2c8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-06-30T12:23:28Z",
    "title_canon_sha256": "0ff19d3bbccc9f7822749f37229221508d01d3f5533afa39f8784528d342f098"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.09053",
    "kind": "arxiv",
    "version": 1
  }
}