Pith Number

pith:4KSOCPPN

pith:2010:4KSOCPPNP6FE6NTOTAUICV3KSN

not attested not anchored not stored refs pending

Measurements of the UV background at 4.6 < z < 6.4 using the quasar proximity effect

(2) Melbourne), Alexander P. Calverley (1), George D. Becker (1), James S. Bolton (2) ((1) KICC/IoA Cambridge, Martin G. Haehnelt (1)

arxiv:1011.5850 v1 · 2010-11-26 · 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{4KSOCPPNP6FE6NTOTAUICV3KSN}

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	2026-05-18T02:04:38.521110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2a4e13ded7f8a4f366e982881576a9355a0f640f1841994ca1242c6cc82cbf1

Aliases

arxiv: 1011.5850 · arxiv_version: 1011.5850v1 · doi: 10.48550/arxiv.1011.5850 · pith_short_12: 4KSOCPPNP6FE · pith_short_16: 4KSOCPPNP6FE6NTO · pith_short_8: 4KSOCPPN

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/4KSOCPPNP6FE6NTOTAUICV3KSN \
  | 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: e2a4e13ded7f8a4f366e982881576a9355a0f640f1841994ca1242c6cc82cbf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c0ee7d6395ec69198f94aeb8303560378df46726d964f1430554d39268b293a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-11-26T17:57:15Z",
    "title_canon_sha256": "35e16d23cab44a09f5692d713b40d83e615903c7697254ef762ce93d9141a7e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.5850",
    "kind": "arxiv",
    "version": 1
  }
}