Pith Number

pith:IZZD426S

pith:2015:IZZD426SS3FJ4DNNKB3TQ7NKYB

not attested not anchored not stored refs pending

Differential measurement of atmospheric refraction with a telescope with double fields of view

Hao Luo, Jian-Jun Cao, Ming Zhao, Yong Yu, Zheng-Hong Tang

arxiv:1504.04166 v1 · 2015-04-16 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZZD426SS3FJ4DNNKB3TQ7NKYB}

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	2026-05-18T01:30:24.784191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46723e6bd296ca9e0dad5077387daac05d913e475c4b02de71dca67308b9fb28

Aliases

arxiv: 1504.04166 · arxiv_version: 1504.04166v1 · doi: 10.48550/arxiv.1504.04166 · pith_short_12: IZZD426SS3FJ · pith_short_16: IZZD426SS3FJ4DNN · pith_short_8: IZZD426S

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/IZZD426SS3FJ4DNNKB3TQ7NKYB \
  | 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: 46723e6bd296ca9e0dad5077387daac05d913e475c4b02de71dca67308b9fb28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f3563398ebe12f5d37676aeb47911747c8034f3974f54a6a8cd6150f5ca96c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-04-16T09:46:55Z",
    "title_canon_sha256": "3c76a0c7e4aa7ad464d19f9d5f1e8daf151aab1b94e658b70b891e86623c766e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04166",
    "kind": "arxiv",
    "version": 1
  }
}