Pith Number

pith:42BS7NAP

pith:2021:42BS7NAPOWF7DKPDXL2FDTT4VB

not attested not anchored not stored refs pending

Two-zone model as origin of hard gamma-rays spectrum in extreme BL Lacs

E. Aguilar-Ruiz, N. Fraija

arxiv:2108.11906 v1 · 2021-08-26 · 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{42BS7NAPOWF7DKPDXL2FDTT4VB}

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	2026-07-05T03:09:10.841627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6832fb40f758bf1a9e3baf451ce7ca8460aace68f6062fd7edb486349c36250

Aliases

arxiv: 2108.11906 · arxiv_version: 2108.11906v1 · doi: 10.48550/arxiv.2108.11906 · pith_short_12: 42BS7NAPOWF7 · pith_short_16: 42BS7NAPOWF7DKPD · pith_short_8: 42BS7NAP

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/42BS7NAPOWF7DKPDXL2FDTT4VB \
  | 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: e6832fb40f758bf1a9e3baf451ce7ca8460aace68f6062fd7edb486349c36250

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9980a88a403d75eb94c8ac51d7c2e61d92ffe3d7264439b7448954b08f50f228",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-08-26T16:59:21Z",
    "title_canon_sha256": "386dea86ba315439ee09b86295a2324f20480dbd23131b872a4fcf9cc274c964"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.11906",
    "kind": "arxiv",
    "version": 1
  }
}