Pith Number

pith:V3SLPR6J

pith:2019:V3SLPR6JHIHKVPJYFEGFKSWVP5

not attested not anchored not stored refs pending

Initial results from a systematic search for changing-look active galactic nuclei selected via mid-infrared variability

Chenwei Yang, Hengxiao Guo, Jiani Ding, Liming Dou, Luming Sun, Ning Jiang, Tinggui Wang, Zhenfeng Sheng, Zheng Cai

arxiv:1905.02904 v1 · 2019-05-08 · 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{V3SLPR6JHIHKVPJYFEGFKSWVP5}

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	2026-07-05T00:38:01.893272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aee4b7c7c93a0eaabd38290c554ad57f678e71fa2b275255e262945b79c03a92

Aliases

arxiv: 1905.02904 · arxiv_version: 1905.02904v1 · doi: 10.48550/arxiv.1905.02904 · pith_short_12: V3SLPR6JHIHK · pith_short_16: V3SLPR6JHIHKVPJY · pith_short_8: V3SLPR6J

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/V3SLPR6JHIHKVPJYFEGFKSWVP5 \
  | 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: aee4b7c7c93a0eaabd38290c554ad57f678e71fa2b275255e262945b79c03a92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61c0eed70c9b1f72b5c422bfbc7f1993ed0e0ce1068beb6489d34a3e2889e908",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-05-08T04:24:09Z",
    "title_canon_sha256": "ee84dd70deb4e24f2edc884e1aff22e4ce7922a5ccc2808832d758f290402e6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02904",
    "kind": "arxiv",
    "version": 1
  }
}