Pith Number

pith:FCUHT4PY

pith:2012:FCUHT4PYBNBXVJLN2VNDJ5Z4PG

not attested not anchored not stored refs pending

Early evolution of spherical ejecta expanding into the circumstellar matter at ultra-relativistic speeds

Akihiro Suzuki, Ko Nakamura, Toshikazu Shigeyama

arxiv:1202.5833 v1 · 2012-02-27 · astro-ph.HE · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FCUHT4PYBNBXVJLN2VNDJ5Z4PG}

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	2026-05-18T01:58:19.500529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28a879f1f80b437aa56dd55a34f73c79bf981bd1ef0981ad4946fa49e8cf1d3c

Aliases

arxiv: 1202.5833 · arxiv_version: 1202.5833v1 · doi: 10.48550/arxiv.1202.5833 · pith_short_12: FCUHT4PYBNBX · pith_short_16: FCUHT4PYBNBXVJLN · pith_short_8: FCUHT4PY

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/FCUHT4PYBNBXVJLN2VNDJ5Z4PG \
  | 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: 28a879f1f80b437aa56dd55a34f73c79bf981bd1ef0981ad4946fa49e8cf1d3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f7d88dd2203cdcbba316f7801ef8c5784f40ca3c1de7e5769f9f85afc15449b",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-02-27T06:38:31Z",
    "title_canon_sha256": "af5510f57930d29cac14e84ebcbe2ac1467c5047c902362947f07260ec3bd0f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5833",
    "kind": "arxiv",
    "version": 1
  }
}