Pith Number

pith:K4TXZWWW

pith:2020:K4TXZWWWRXYTJPCHIFUSY7VV45

not attested not anchored not stored refs pending

The composite X-ray spectra of radio-loud and radio-quiet SDSS quasars

Minfeng Gu, Minhua Zhou

arxiv:2007.01049 v1 · 2020-07-02 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K4TXZWWWRXYTJPCHIFUSY7VV45}

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	2026-07-05T02:13:46.938614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57277cdad68df134bc4741692c7eb5e7524105b5f3740b869f2825a5b1f1998e

Aliases

arxiv: 2007.01049 · arxiv_version: 2007.01049v1 · doi: 10.48550/arxiv.2007.01049 · pith_short_12: K4TXZWWWRXYT · pith_short_16: K4TXZWWWRXYTJPCH · pith_short_8: K4TXZWWW

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/K4TXZWWWRXYTJPCHIFUSY7VV45 \
  | 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: 57277cdad68df134bc4741692c7eb5e7524105b5f3740b869f2825a5b1f1998e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09209df403b339eb8deede10d2394aea02a8a13d24516841416215a7734875ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-07-02T12:12:09Z",
    "title_canon_sha256": "e0be41b1758ddf737452eb39cae3bafc3d8dbe87360d845e62edad7e53aa2278"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.01049",
    "kind": "arxiv",
    "version": 1
  }
}