Pith Number

pith:QPZFO4A5

pith:2019:QPZFO4A5MLHR6A6O2PUY3ZLHDG

not attested not anchored not stored refs pending

The Diffuse Ultraviolet and Optical Background: Status and Future Prospects

Jayant Murthy, M. S. Akshaya, S. Ravichandran

arxiv:1909.05325 v2 · 2019-09-11 · 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{QPZFO4A5MLHR6A6O2PUY3ZLHDG}

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	2026-07-05T00:07:07.990029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83f257701d62cf1f03ced3e98de5671989732328731583c7e6324fb253fd4e32

Aliases

arxiv: 1909.05325 · arxiv_version: 1909.05325v2 · doi: 10.48550/arxiv.1909.05325 · pith_short_12: QPZFO4A5MLHR · pith_short_16: QPZFO4A5MLHR6A6O · pith_short_8: QPZFO4A5

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/QPZFO4A5MLHR6A6O2PUY3ZLHDG \
  | 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: 83f257701d62cf1f03ced3e98de5671989732328731583c7e6324fb253fd4e32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5f20b8601b7da9a9ed8f108454944e8750ea25bd0bbb248e3b07df12117689d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-09-11T19:40:03Z",
    "title_canon_sha256": "9e82ef254220e55d25a2ff2aa957661d08f5fdfedd9ea33ea25c0d116f40c073"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.05325",
    "kind": "arxiv",
    "version": 2
  }
}