Pith Number

pith:3EYBS6PJ

pith:2021:3EYBS6PJZIMGWZ4KFW5B24UVCS

not attested not anchored not stored refs pending

The Luminosity Function of bright QSOs at z~4 and implications for the cosmic ionizing background

A.Grazian, A. Omizzolo, E. Giallongo, F. Fontanot, F. Guarneri, G. Calderone, G. Cupani, K.Boutsia, N. Menci, S. Cristiani, V. D'Odorico

arxiv:2103.10446 v1 · 2021-03-18 · 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{3EYBS6PJZIMGWZ4KFW5B24UVCS}

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	2026-07-05T02:41:18.175214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9301979e9ca186b678a2dba1d7295149f7bca844090f3d15eaab2c71655f51d

Aliases

arxiv: 2103.10446 · arxiv_version: 2103.10446v1 · doi: 10.48550/arxiv.2103.10446 · pith_short_12: 3EYBS6PJZIMG · pith_short_16: 3EYBS6PJZIMGWZ4K · pith_short_8: 3EYBS6PJ

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/3EYBS6PJZIMGWZ4KFW5B24UVCS \
  | 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: d9301979e9ca186b678a2dba1d7295149f7bca844090f3d15eaab2c71655f51d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bba37cc3f1de6fdc79b64d3cb18ed24627baa5096114c9ec8fe090b1b59196c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-18T18:00:23Z",
    "title_canon_sha256": "7050399a35214c71b3171cfc4da400b254d829898fb9d241d86d396dd8075567"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.10446",
    "kind": "arxiv",
    "version": 1
  }
}