Pith Number

pith:4VHZ7UGY

pith:2026:4VHZ7UGYQQ7DKH6T2MNLCXAE6G

not attested not anchored not stored refs pending

Extreme color-magnitude variability: connection to changing-look AGNs

(2) ARIES, Alok C. Gupta, China, India), Jiawen Li (1) ((1) Yunnan University, Litao Zhu, Man Lang, P. U. Devanand (2), Qiangmeng Huang, Ruoheng Yang, Zhongxiang Wang (1)

arxiv:2605.25689 v1 · 2026-05-25 · 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{4VHZ7UGYQQ7DKH6T2MNLCXAE6G}

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	2026-05-26T02:04:50.361313Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e54f9fd0d8843e351fd3d31ab15c04f195702dcc990122141dfbbede4cbc0323

Aliases

arxiv: 2605.25689 · arxiv_version: 2605.25689v1 · doi: 10.48550/arxiv.2605.25689 · pith_short_12: 4VHZ7UGYQQ7D · pith_short_16: 4VHZ7UGYQQ7DKH6T · pith_short_8: 4VHZ7UGY

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/4VHZ7UGYQQ7DKH6T2MNLCXAE6G \
  | 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: e54f9fd0d8843e351fd3d31ab15c04f195702dcc990122141dfbbede4cbc0323

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d307eb2500d715331f397e414b72e3eb7183d5fabb4fcb0940246960ad0f176",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-25T10:44:14Z",
    "title_canon_sha256": "237e7ed564c17bb987643f66a11a0330484b525130bc6d9bc437b306bf7f5ad7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.25689",
    "kind": "arxiv",
    "version": 1
  }
}