Pith Number

pith:4MPFJ74S

pith:2019:4MPFJ74STXJ5QTEYIC3DDLEIDC

not attested not anchored not stored refs pending

Probing an X-ray flare pattern in Mrk 421 induced by multiple stationary shocks: a solution to the bulk Lorentz factor crisis

Abraham D. Falcone, Amanpreet Kaur, David A. Williams, Olivier Hervet

arxiv:1904.06802 v1 · 2019-04-15 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4MPFJ74STXJ5QTEYIC3DDLEIDC}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:44:54.359404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e31e54ff929dd3d84c9840b631ac881898af727358d85ff2532901ce6ff7744a

Aliases

arxiv: 1904.06802 · arxiv_version: 1904.06802v1 · doi: 10.48550/arxiv.1904.06802 · pith_short_12: 4MPFJ74STXJ5 · pith_short_16: 4MPFJ74STXJ5QTEY · pith_short_8: 4MPFJ74S

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/4MPFJ74STXJ5QTEYIC3DDLEIDC \
  | 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: e31e54ff929dd3d84c9840b631ac881898af727358d85ff2532901ce6ff7744a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "512d6140ae87f0c7f3bf287b75a72414e3147f40f9a4c248376c8778c5620bcc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-04-15T01:14:39Z",
    "title_canon_sha256": "629176a1757ad23594e4a030c4d120993bb3536f4cadb06666d34ab90722d800"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06802",
    "kind": "arxiv",
    "version": 1
  }
}