Pith Number

pith:EVKZHLOS

pith:2022:EVKZHLOSVYYH6CN4M4Y6LLCDNC

not attested not anchored not stored refs pending

A spectral hardening in the Fermi-LAT Data of 1ES 0502+675

Dahai Yan, Jiancheng Wang, Wen Hu, Yuhang Zeng

arxiv:2201.02508 v1 · 2022-01-07 · 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{EVKZHLOSVYYH6CN4M4Y6LLCDNC}

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	2026-07-05T03:49:29.819392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

255593add2ae307f09bc6731e5ac43688b3f7275f46eba662927fab1cf5cfe9f

Aliases

arxiv: 2201.02508 · arxiv_version: 2201.02508v1 · doi: 10.48550/arxiv.2201.02508 · pith_short_12: EVKZHLOSVYYH · pith_short_16: EVKZHLOSVYYH6CN4 · pith_short_8: EVKZHLOS

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/EVKZHLOSVYYH6CN4M4Y6LLCDNC \
  | 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: 255593add2ae307f09bc6731e5ac43688b3f7275f46eba662927fab1cf5cfe9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39d1cd1ed2a9bc8985d011c3b3d9ca15848f69361a87d07bcf6050c8c2557cf1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-01-07T15:50:57Z",
    "title_canon_sha256": "3d03046e3d93171aa5b63e4f88a3fd3622f225b8d2a37a2a26d0266f37c5c126"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.02508",
    "kind": "arxiv",
    "version": 1
  }
}