Pith Number

pith:47BS2QV5

pith:2017:47BS2QV5ZQDMZ3A7D5SCZFYUGD

not attested not anchored not stored refs pending

On the origin of the hard X-Ray excess of high-synchrotron-peaked BL Lac object Mrk 421

Liang Chen

arxiv:1706.04611 v2 · 2017-06-14 · 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{47BS2QV5ZQDMZ3A7D5SCZFYUGD}

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	2026-05-18T00:39:25.578723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7c32d42bdcc06ccec1f1f642c971430d1b5170384860a3c2bb285eafbb0ab7e

Aliases

arxiv: 1706.04611 · arxiv_version: 1706.04611v2 · doi: 10.48550/arxiv.1706.04611 · pith_short_12: 47BS2QV5ZQDM · pith_short_16: 47BS2QV5ZQDMZ3A7 · pith_short_8: 47BS2QV5

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/47BS2QV5ZQDMZ3A7D5SCZFYUGD \
  | 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: e7c32d42bdcc06ccec1f1f642c971430d1b5170384860a3c2bb285eafbb0ab7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90476f0f1e0b4c4f485843e8b4845755de45383cdeab598ad2a6759582537349",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-06-14T17:57:21Z",
    "title_canon_sha256": "0f2ed0b6542b36d3bf9501f0ad2f9f4d16a328c4d326c4663771d081f9f5da5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.04611",
    "kind": "arxiv",
    "version": 2
  }
}