Pith Number

pith:67UAUXD6

pith:2018:67UAUXD6SBKPXHHX6YNAS3PJ64

not attested not anchored not stored refs pending

Predicting Quasar Continua Near Lyman-$\alpha$ with Principal Component Analysis

Bram P. Venemans, Chiara Mazzucchelli, Eduardo Ba\~nados, Emanuele P. Farina, Fabian Walter, Feige Wang, Frederick B. Davies, Hans-Walter Rix, Jinyi Yang, Joseph F. Hennawi, Robert A. Simcoe, Roberto Decarli, Xiaohui Fan

arxiv:1801.07679 v1 · 2018-01-23 · 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{67UAUXD6SBKPXHHX6YNAS3PJ64}

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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	2026-05-18T00:05:32.130634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7e80a5c7e9054fb9cf7f61a096de9f70fe275794609cbe0e7f79bc60d98e12a

Aliases

arxiv: 1801.07679 · arxiv_version: 1801.07679v1 · doi: 10.48550/arxiv.1801.07679 · pith_short_12: 67UAUXD6SBKP · pith_short_16: 67UAUXD6SBKPXHHX · pith_short_8: 67UAUXD6

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/67UAUXD6SBKPXHHX6YNAS3PJ64 \
  | 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: f7e80a5c7e9054fb9cf7f61a096de9f70fe275794609cbe0e7f79bc60d98e12a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a4fc1152b82b3fc15429b00303b829e25e89559575d04052c51c3292e08114d",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-23T17:59:49Z",
    "title_canon_sha256": "74060e8e8dc0d7eb2ef9e9fcde94529074e58f2ea05ce3ae410c4b3ad4103b10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07679",
    "kind": "arxiv",
    "version": 1
  }
}