Pith Number

pith:4JCW7KBQ

pith:2010:4JCW7KBQGM3JXHAWATT4LM5E5M

not attested not anchored not stored refs pending

Near-zone sizes and the rest frame extreme ultra-violet spectral index of the highest redshift quasars

James S. Bolton, Stuart Wyithe

arxiv:1008.1107 v1 · 2010-08-06 · 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{4JCW7KBQGM3JXHAWATT4LM5E5M}

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	2026-05-18T02:05:58.561452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2456fa83033369b9c1604e7c5b3a4eb3ad25172852833daaa1d5556197fc064

Aliases

arxiv: 1008.1107 · arxiv_version: 1008.1107v1 · doi: 10.48550/arxiv.1008.1107 · pith_short_12: 4JCW7KBQGM3J · pith_short_16: 4JCW7KBQGM3JXHAW · pith_short_8: 4JCW7KBQ

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/4JCW7KBQGM3JXHAWATT4LM5E5M \
  | 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: e2456fa83033369b9c1604e7c5b3a4eb3ad25172852833daaa1d5556197fc064

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e6267e90e3d09f2995d22e39f77dceb79414d3b80766c0ea1a08dbdb7a53057",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-08-06T02:15:50Z",
    "title_canon_sha256": "4d1a26a6aa4e81599f339cc8083eb5a6f7d888ad0e942b2add0e0015c5bd058a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.1107",
    "kind": "arxiv",
    "version": 1
  }
}