Pith Number

pith:PBGG2GCL

pith:2021:PBGG2GCLAZ5ZPUN67QFY7XM2JD

not attested not anchored not stored refs pending

The BIG X-ray tail

Alessandro Boselli, Chong Ge, Christine Jones, Eugene Churazov, Irina Zhuravleva, Li Ji, Masafumi Yagi, Matteo Fossati, Ming Sun, Pavel J\'achym, Rongxin Luo, William Forman

arxiv:2109.07964 v1 · 2021-09-16 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PBGG2GCLAZ5ZPUN67QFY7XM2JD}

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	2026-07-05T03:15:03.571840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

784c6d184b067b97d1befc0b8fdd9a48d58eee3ea030dee1ba85fb38bf678769

Aliases

arxiv: 2109.07964 · arxiv_version: 2109.07964v1 · doi: 10.48550/arxiv.2109.07964 · pith_short_12: PBGG2GCLAZ5Z · pith_short_16: PBGG2GCLAZ5ZPUN6 · pith_short_8: PBGG2GCL

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/PBGG2GCLAZ5ZPUN67QFY7XM2JD \
  | 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: 784c6d184b067b97d1befc0b8fdd9a48d58eee3ea030dee1ba85fb38bf678769

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7d87715170fc664957261a94930e35b0674007e75207a335a89391a56a4b41a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-16T13:20:00Z",
    "title_canon_sha256": "2ac35be8c83b90aa91f01bbe3f05aa2ce84051edb6a4a3f7e6d43a4fefec5135"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.07964",
    "kind": "arxiv",
    "version": 1
  }
}