Pith Number

pith:QDHCKF4T

pith:2025:QDHCKF4TYL4F2ISW7KUOJ5MRZT

not attested not anchored not stored refs pending

A Deep SETI Search for Technosignatures in the TRAPPIST-1 System with FAST

Bo-Lun Huang, Bo Yu, Guang-Yuan Song, Tong-Jie Zhang, Yan Cui, Zhen-Zhao Tao

arxiv:2509.06310 v2 · 2025-09-08 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDHCKF4TYL4F2ISW7KUOJ5MRZT}

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	2026-07-03T01:17:12.838699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80ce251793c2f85d2256faa8e4f591ccc381baeb5335fa2430c1b01a230f8d6b

Aliases

arxiv: 2509.06310 · arxiv_version: 2509.06310v2 · doi: 10.48550/arxiv.2509.06310 · pith_short_12: QDHCKF4TYL4F · pith_short_16: QDHCKF4TYL4F2ISW · pith_short_8: QDHCKF4T

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/QDHCKF4TYL4F2ISW7KUOJ5MRZT \
  | 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: 80ce251793c2f85d2256faa8e4f591ccc381baeb5335fa2430c1b01a230f8d6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cc37ded306f458123818fd934434ab76d30b1d72a434a79403df0e521033dbb",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-09-08T03:23:39Z",
    "title_canon_sha256": "c59cde1205209891b4c537ab2f9b35288bb8e76bdac7219456281deb768f9b60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.06310",
    "kind": "arxiv",
    "version": 2
  }
}