Pith Number

pith:QAEKBA6X

pith:2016:QAEKBA6X7W2EI7KX6JKRH6ASX3

not attested not anchored not stored refs pending

The luminosity dependence of quasar UV continuum slope: dust extinction scenario

Hui Liu, Linlin Li, Shiyin Shen, Xiaoyi Xie, Zhengyi Shao

arxiv:1604.05892 v1 · 2016-04-20 · astro-ph.GA · 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{QAEKBA6X7W2EI7KX6JKRH6ASX3}

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	2026-05-18T01:12:29.464822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8008a083d7fdb4447d57f25513f812bef3fe9903561d93ccc02ef8aa77566f4c

Aliases

arxiv: 1604.05892 · arxiv_version: 1604.05892v1 · doi: 10.48550/arxiv.1604.05892 · pith_short_12: QAEKBA6X7W2E · pith_short_16: QAEKBA6X7W2EI7KX · pith_short_8: QAEKBA6X

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/QAEKBA6X7W2EI7KX6JKRH6ASX3 \
  | 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: 8008a083d7fdb4447d57f25513f812bef3fe9903561d93ccc02ef8aa77566f4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "178d513a611306146366ca0a1d2eb39684d1f2de09dedbdd3a132c07af7983ed",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-04-20T11:05:43Z",
    "title_canon_sha256": "1eafdbf3c252ab86cc87d343f7033cce40b72995a8b601caa42eb6492b40652d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05892",
    "kind": "arxiv",
    "version": 1
  }
}