Pith Number

pith:HDG4CEID

pith:2018:HDG4CEIDIHTL3QQ5HLYILKIGPP

not attested not anchored not stored refs pending

On the origin of gamma rays in Fermi blazars: beyond the broad line region

A. Tramacere, E. Antolini, G. Tosti, L. Costamante, S. Cutini

arxiv:1804.02408 v1 · 2018-04-06 · 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{HDG4CEIDIHTL3QQ5HLYILKIGPP}

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	2026-05-18T00:15:54.793678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38cdc1110341e6bdc21d3af085a9067be74ba8ad77a6020f24a9047654fe7bc6

Aliases

arxiv: 1804.02408 · arxiv_version: 1804.02408v1 · doi: 10.48550/arxiv.1804.02408 · pith_short_12: HDG4CEIDIHTL · pith_short_16: HDG4CEIDIHTL3QQ5 · pith_short_8: HDG4CEID

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/HDG4CEIDIHTL3QQ5HLYILKIGPP \
  | 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: 38cdc1110341e6bdc21d3af085a9067be74ba8ad77a6020f24a9047654fe7bc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61fa4d1ae0ef4e658a2c32f2500a27d3968ddf12ff473b54331e01ad9d99a189",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-04-06T18:00:29Z",
    "title_canon_sha256": "4bdd43b8ebd7ba3380f58c46af5604bb81802221399a2d95bc7c0e1d9cb8e37b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02408",
    "kind": "arxiv",
    "version": 1
  }
}