Pith Number

pith:K3Q7BEJX

pith:2021:K3Q7BEJXMPOTZOQQZ4IMDLKUFH

not attested not anchored not stored refs pending

Predictions of TeV emission for a set of hard BL Lac objects

Alberto Franceschini, Aldo Treves, Renato Falomo, Simona Paiano

arxiv:2110.04051 v1 · 2021-10-08 · 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{K3Q7BEJXMPOTZOQQZ4IMDLKUFH}

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	2026-07-05T03:23:52.924713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56e1f0913763dd3cba10cf10c1ad5429e1fe36e33f339d31fd1d16310050e920

Aliases

arxiv: 2110.04051 · arxiv_version: 2110.04051v1 · doi: 10.48550/arxiv.2110.04051 · pith_short_12: K3Q7BEJXMPOT · pith_short_16: K3Q7BEJXMPOTZOQQ · pith_short_8: K3Q7BEJX

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/K3Q7BEJXMPOTZOQQZ4IMDLKUFH \
  | 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: 56e1f0913763dd3cba10cf10c1ad5429e1fe36e33f339d31fd1d16310050e920

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad8a2f77144f054e711b8c172a4009b68c23eba8ac6b7454980446d571773ed1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-10-08T11:55:59Z",
    "title_canon_sha256": "a7897047b8c37d5be6d215655800841e78f97e77cb0ae9cb91d6f14cea9c6ec9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.04051",
    "kind": "arxiv",
    "version": 1
  }
}