Pith Number

pith:I3TPJY4W

pith:2019:I3TPJY4WDROU7JTOX53PFTRCCY

not attested not anchored not stored refs pending

Thick-disc model to explain the spectral state transition in NGC 247

Jing Guo (XMU), Mouyuan Sun (USTC), Tuan Yi (XMU), Wei-Min Gu (XMU)

arxiv:1902.09337 v1 · 2019-02-25 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I3TPJY4WDROU7JTOX53PFTRCCY}

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	2026-05-17T23:52:00.968583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46e6f4e3961c5d4fa66ebf76f2ce221624ec20308ef0adde829d509b4e664de6

Aliases

arxiv: 1902.09337 · arxiv_version: 1902.09337v1 · doi: 10.48550/arxiv.1902.09337 · pith_short_12: I3TPJY4WDROU · pith_short_16: I3TPJY4WDROU7JTO · pith_short_8: I3TPJY4W

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/I3TPJY4WDROU7JTOX53PFTRCCY \
  | 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: 46e6f4e3961c5d4fa66ebf76f2ce221624ec20308ef0adde829d509b4e664de6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adaaa8c723b458ca5a450cdb8793d835ca8110827e95d455a63cd9964380ad91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-02-25T15:07:06Z",
    "title_canon_sha256": "ee72f55b8fdbc5840b14b4a3546208283929874f58e4084b6658ec92f8bcc5c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09337",
    "kind": "arxiv",
    "version": 1
  }
}