Pith Number

pith:NOPKU7PA

pith:2026:NOPKU7PABJAOZ4CBNIJMODDOIV

not attested not anchored not stored refs pending

Two Earliest Optical-UV Tidal Disruption Events Hidden in the SDSS DR7 Catalog Unveiled by the Transformer-Based Spectrum Classifier

Dezheng Meng, Lulu Fan, Ranfang Zheng, Ran Song, Xu Kong, Zheyu Lin

arxiv:2607.11539 v1 · 2026-07-13 · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NOPKU7PABJAOZ4CBNIJMODDOIV}

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	2026-07-14T02:22:09.866365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b9eaa7de00a40ecf0416a12c70c6e4560842e4754413c1d7d045e8b4831f2f1

Aliases

arxiv: 2607.11539 · arxiv_version: 2607.11539v1 · doi: 10.48550/arxiv.2607.11539 · pith_short_12: NOPKU7PABJAO · pith_short_16: NOPKU7PABJAOZ4CB · pith_short_8: NOPKU7PA

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/NOPKU7PABJAOZ4CBNIJMODDOIV \
  | 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: 6b9eaa7de00a40ecf0416a12c70c6e4560842e4754413c1d7d045e8b4831f2f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d031bb0670ac515a1a2f293bb7b4a355dcaa458e670c0dd19e68d57138fdbe76",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-07-13T13:23:31Z",
    "title_canon_sha256": "195a627bf832029a650f45bb2154a38c3c73a043b045c1c6ae8d5d7f74d9349d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.11539",
    "kind": "arxiv",
    "version": 1
  }
}