Pith Number

pith:OKCUR6E4

pith:2018:OKCUR6E43RLZH2P6B2MPMZPUCJ

not attested not anchored not stored refs pending

High-redshift quasar selection from the CFHQSIR survey

C. J. Willott, J.-C. Cuillandre, J. G. Cuby, P. Hudelot, S. Arnouts, S. Basa, S. Pipien

arxiv:1808.10672 v2 · 2018-08-31 · 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{OKCUR6E43RLZH2P6B2MPMZPUCJ}

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	2026-05-18T00:03:55.438688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

728548f89cdc5793e9fe0e98f665f41244421825513c65969b8e737a3c7a7902

Aliases

arxiv: 1808.10672 · arxiv_version: 1808.10672v2 · doi: 10.48550/arxiv.1808.10672 · pith_short_12: OKCUR6E43RLZ · pith_short_16: OKCUR6E43RLZH2P6 · pith_short_8: OKCUR6E4

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/OKCUR6E43RLZH2P6B2MPMZPUCJ \
  | 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: 728548f89cdc5793e9fe0e98f665f41244421825513c65969b8e737a3c7a7902

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3ee0670b412f507cddb43f28233555db7d624d2edcd3af384eabad03a8bef38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-31T10:46:29Z",
    "title_canon_sha256": "ac79fbe5d760f533f5edc951caadf3d89e38d64d468e82baeffc9c100702de41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10672",
    "kind": "arxiv",
    "version": 2
  }
}