Pith Number

pith:C4PRZJ7D

pith:2018:C4PRZJ7DLYOGEWRDL2IM2TDKOX

not attested not anchored not stored refs pending

Gemini GNIRS near-infrared spectroscopy of 50 quasars at z>~5.7

Bram Venemans, Chris Willott, Dominik A. Riechers, Eduardo Banados, Fabian Walter, Feige Wang, Jin Wu, Jinyi Yang, Linhua Jiang, Luis C. Ho, Marianne Vestergaard, Michael A. Strauss, Xiaohui Fan, Xue-Bing Wu, Yue Shen

arxiv:1809.05584 v2 · 2018-09-14 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C4PRZJ7DLYOGEWRDL2IM2TDKOX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:52:05.156579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

171f1ca7e35e1c625a235e90cd4c6a75d24481f6baa5c4e8d81e6b95479343e2

Aliases

arxiv: 1809.05584 · arxiv_version: 1809.05584v2 · doi: 10.48550/arxiv.1809.05584 · pith_short_12: C4PRZJ7DLYOG · pith_short_16: C4PRZJ7DLYOGEWRD · pith_short_8: C4PRZJ7D

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/C4PRZJ7DLYOGEWRDL2IM2TDKOX \
  | 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: 171f1ca7e35e1c625a235e90cd4c6a75d24481f6baa5c4e8d81e6b95479343e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bb62bffa65d84ce23db3ebb055656c001e711dc0f3e0c6445a4d66b9bd71413",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-14T20:46:34Z",
    "title_canon_sha256": "b66e82022db83f429b8f2119a07841f4bbc27bcb654c56c62dbf76b64b4015a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05584",
    "kind": "arxiv",
    "version": 2
  }
}