Pith Number

pith:IKDISZU7

pith:2020:IKDISZU7DN2WYDGHDVMPZFLNIW

not attested not anchored not stored refs pending

Optical and X-ray discovery of the changing-look AGN IRAS23226-3843 showing extremely broad and double-peaked Balmer profiles

D. Grupe, E. Herwig, E. Romero-Colmenero, M.L. Parker, M. Santos-Lleo, M. W. Ochmann, N. Schartel, S. Komossa, W. Kollatschny

arxiv:2004.01711 v1 · 2020-04-03 · astro-ph.GA · 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{IKDISZU7DN2WYDGHDVMPZFLNIW}

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	2026-07-05T01:15:15.694132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

428689669f1b756c0cc71d58fc956d45a31e41796dbd2da1cec6ac9b3d4a0b58

Aliases

arxiv: 2004.01711 · arxiv_version: 2004.01711v1 · doi: 10.48550/arxiv.2004.01711 · pith_short_12: IKDISZU7DN2W · pith_short_16: IKDISZU7DN2WYDGH · pith_short_8: IKDISZU7

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/IKDISZU7DN2WYDGHDVMPZFLNIW \
  | 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: 428689669f1b756c0cc71d58fc956d45a31e41796dbd2da1cec6ac9b3d4a0b58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdd0c22da7ca11b78c485ce6aa700233506516c35e5966a5b00e98623b421f84",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-04-03T15:03:40Z",
    "title_canon_sha256": "3991211226362be28e4a89cff5c7f5c2a10a5cbb6a11261e4ef43878889c3d71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.01711",
    "kind": "arxiv",
    "version": 1
  }
}