Pith Number

pith:BBKM2XVF

pith:2026:BBKM2XVFQNTBUOPWYXLATWZNFY

not attested not anchored not stored refs pending

The physical mechanism for two rapid changing-look AGNs: SDSS J0225+0030 and SDSS J1723+5504

Shuang-Liang Li, Wei-Min Gu, Xinwu Cao

arxiv:2608.01249 v1 · 2026-08-02 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBKM2XVFQNTBUOPWYXLATWZNFY}

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	2026-08-04T02:02:16.713484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0854cd5ea583661a39f6c5d609db2d2e033c8527b920fe05f040c675aa398035

Aliases

arxiv: 2608.01249 · arxiv_version: 2608.01249v1 · doi: 10.48550/arxiv.2608.01249 · pith_short_12: BBKM2XVFQNTB · pith_short_16: BBKM2XVFQNTBUOPW · pith_short_8: BBKM2XVF

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/BBKM2XVFQNTBUOPWYXLATWZNFY \
  | 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: 0854cd5ea583661a39f6c5d609db2d2e033c8527b920fe05f040c675aa398035

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db1fea3d0407402f758b76a295193cbd618ff3981e9468d7e97430a7ce6b0693",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-08-02T14:01:09Z",
    "title_canon_sha256": "f45afa2a3eaf821e6cc5649d4392dc7d8fad9b01ec0d05f465db8f23b0b9b67f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.01249",
    "kind": "arxiv",
    "version": 1
  }
}