Pith Number

pith:QGFDV5E5

pith:2018:QGFDV5E5EU4WFP5XRPUIQNXKAQ

not attested not anchored not stored refs pending

UV SEDs of early-type cluster galaxies: A new look at the UV upturn

(2) FINCA, Finland), M. N. Bremer (1), R. De Propris (2) ((1) H. H. Wills Physics Laboratory, S. Phillipps (1), S. S. Ali (1), UK, University of Bristol, University of Turku

arxiv:1801.09688 v1 · 2018-01-29 · 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{QGFDV5E5EU4WFP5XRPUIQNXKAQ}

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	2026-05-18T00:23:27.242656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

818a3af49d253962bfb78be88836ea040f087b99783fcf06996cb44cc4a78db9

Aliases

arxiv: 1801.09688 · arxiv_version: 1801.09688v1 · doi: 10.48550/arxiv.1801.09688 · pith_short_12: QGFDV5E5EU4W · pith_short_16: QGFDV5E5EU4WFP5X · pith_short_8: QGFDV5E5

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/QGFDV5E5EU4WFP5XRPUIQNXKAQ \
  | 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: 818a3af49d253962bfb78be88836ea040f087b99783fcf06996cb44cc4a78db9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "835d6c6c39e41c217c44a62d804c8b3509a73f46fb294c636458d38b8e0379f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-29T19:00:01Z",
    "title_canon_sha256": "8c8a4c9e6450eae2acbc1ad9b5269c7838f335e6eba207c44752aba33c7e0d24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09688",
    "kind": "arxiv",
    "version": 1
  }
}