Pith Number

pith:EMI7VG7F

pith:2018:EMI7VG7FXYMSF5ZZAVPI4VVKVL

not attested not anchored not stored refs pending

Modelling of the quasar main sequence in the optical plane

Bo\.zena Czerny, Conor Wildy, Joanna Kuraszkiewicz, Krzysztof Hryniewicz, Marzena \'Sniegowska, Swayamtrupta Panda, Tek P. Adhikari

arxiv:1806.08571 v3 · 2018-06-22 · 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{EMI7VG7FXYMSF5ZZAVPI4VVKVL}

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	2026-05-18T00:00:54.833694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2311fa9be5be1922f739055e8e56aaaae4ac59cad67bd3ba23af0f1776c5d678

Aliases

arxiv: 1806.08571 · arxiv_version: 1806.08571v3 · doi: 10.48550/arxiv.1806.08571 · pith_short_12: EMI7VG7FXYMS · pith_short_16: EMI7VG7FXYMSF5ZZ · pith_short_8: EMI7VG7F

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/EMI7VG7FXYMSF5ZZAVPI4VVKVL \
  | 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: 2311fa9be5be1922f739055e8e56aaaae4ac59cad67bd3ba23af0f1776c5d678

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e28912d1f6a53566e304a1a2c0ffcc6e53256ae8693e92ac67f664e74092327d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-06-22T09:29:45Z",
    "title_canon_sha256": "8364dfd9bf0b0f7b0903d8ab7071ed055c2cca1f47c355dbc7b66458a6fee311"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08571",
    "kind": "arxiv",
    "version": 3
  }
}