Pith Number

pith:UTGRY4ZK

pith:2015:UTGRY4ZKLGFCT4STYDWQXRSXAK

not attested not anchored not stored refs pending

Swift J1357.2-0933: a massive black hole in the Galactic thick disc

Daniel Mata S\'anchez, Jes\'us Corral-Santana, Jorge Casares, Tariq Shahbaz, Teo Munoz-Darias

arxiv:1509.05412 v1 · 2015-09-17 · 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{UTGRY4ZKLGFCT4STYDWQXRSXAK}

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	2026-05-18T01:29:44.566790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4cd1c732a598a29f253c0ed0bc657029994e66d035b79b787ccf10f4b37c6cd

Aliases

arxiv: 1509.05412 · arxiv_version: 1509.05412v1 · doi: 10.48550/arxiv.1509.05412 · pith_short_12: UTGRY4ZKLGFC · pith_short_16: UTGRY4ZKLGFCT4ST · pith_short_8: UTGRY4ZK

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/UTGRY4ZKLGFCT4STYDWQXRSXAK \
  | 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: a4cd1c732a598a29f253c0ed0bc657029994e66d035b79b787ccf10f4b37c6cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2f16aff72295b4ff7804ce6c30ede109040065027d8fcd9ba22e9543c377d0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-09-17T20:15:08Z",
    "title_canon_sha256": "eb53796212156d68bdd2b6e48e79ecab1e44d30cbd3a9775a484e0188766caf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05412",
    "kind": "arxiv",
    "version": 1
  }
}