Pith Number

pith:UPB6VCKU

pith:2018:UPB6VCKUZ7WLWOHSVUX44GTSAV

not attested not anchored not stored refs pending

The rise and fall of the UV upturn: $z=0.3,\ 0.55$ and $0.7$

Finland, Malcolm Bremer (1), Roberto De Propris (2) (1) H. H. Wills Physics Laboratory, Sadman Ali (1), Steven Phillipps (1), UK (2) FINCA, University of Bristol, University of Turku

arxiv:1807.09274 v1 · 2018-07-24 · 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{UPB6VCKUZ7WLWOHSVUX44GTSAV}

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	2026-05-18T00:08:37.879304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3c3ea8954cfecbb38f2ad2fce1a72054d887557577b9d9c62e8ed7e2877f75b

Aliases

arxiv: 1807.09274 · arxiv_version: 1807.09274v1 · doi: 10.48550/arxiv.1807.09274 · pith_short_12: UPB6VCKUZ7WL · pith_short_16: UPB6VCKUZ7WLWOHS · pith_short_8: UPB6VCKU

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/UPB6VCKUZ7WLWOHSVUX44GTSAV \
  | 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: a3c3ea8954cfecbb38f2ad2fce1a72054d887557577b9d9c62e8ed7e2877f75b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abcaffc159db8978e9e39dd6941a3d93e1961b9ed05d34f075d775c3ab0e30d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-24T18:00:01Z",
    "title_canon_sha256": "d09556f70e259caa1c1033d4c3126b7bf5981a63a41d39ca7e2300a708f8f6fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.09274",
    "kind": "arxiv",
    "version": 1
  }
}