Pith Number

pith:5HBP22W6

pith:2019:5HBP22W6GNHSTRI43OJAFUCNI7

not attested not anchored not stored refs pending

Classification of Broad Absorption Line Quasars with a Convolutional Neural Network

Paul Martini, Zhiyuan Guo

arxiv:1901.04506 v1 · 2019-01-14 · 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{5HBP22W6GNHSTRI43OJAFUCNI7}

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

1 paper in Pith

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

Receipt and verification

First computed	2026-05-17T23:41:12.291051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9c2fd6ade334f29c51cdb9202d04d47c2eaa94c7b357168b5106247515ea416

Aliases

arxiv: 1901.04506 · arxiv_version: 1901.04506v1 · doi: 10.48550/arxiv.1901.04506 · pith_short_12: 5HBP22W6GNHS · pith_short_16: 5HBP22W6GNHSTRI4 · pith_short_8: 5HBP22W6

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/5HBP22W6GNHSTRI43OJAFUCNI7 \
  | 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: e9c2fd6ade334f29c51cdb9202d04d47c2eaa94c7b357168b5106247515ea416

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fdaa67e19885a030343906a10a24bba50b79ca20cf0f5c5897f1ab96848cfd7",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-14T19:00:04Z",
    "title_canon_sha256": "cf27328c7b8c1fe2b51b8f71a77dd914b94e3753d2e823d30d48f9653facd218"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04506",
    "kind": "arxiv",
    "version": 1
  }
}