Pith Number

pith:E7PYDZWK

pith:2013:E7PYDZWKG7MIDFDL2UNTUOLUSM

not attested not anchored not stored refs pending

A model for the Balmer pseudocontinuum in spectra of type 1 AGNs

Jelena Kovacevic, Luka C. Popovic, Wolfram Kollatschny

arxiv:1311.6653 v1 · 2013-11-26 · 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{E7PYDZWKG7MIDFDL2UNTUOLUSM}

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	2026-05-18T01:46:06.019640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27df81e6ca37d881946bd51b3a39749300c182794624648959fdfb578b84695f

Aliases

arxiv: 1311.6653 · arxiv_version: 1311.6653v1 · doi: 10.48550/arxiv.1311.6653 · pith_short_12: E7PYDZWKG7MI · pith_short_16: E7PYDZWKG7MIDFDL · pith_short_8: E7PYDZWK

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/E7PYDZWKG7MIDFDL2UNTUOLUSM \
  | 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: 27df81e6ca37d881946bd51b3a39749300c182794624648959fdfb578b84695f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45c0528ff1b9a9e8810b6b36f6358fddb570db43dac7ea0907b9b120463d880e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-26T13:20:17Z",
    "title_canon_sha256": "eba074aee3ebed1de76888a6f72d8613325ae209016646a4d6ad9ba2f2718348"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6653",
    "kind": "arxiv",
    "version": 1
  }
}