Pith Number

pith:7DPEZWTX

pith:2020:7DPEZWTX4R46IXWJ64GRZGR6BD

not attested not anchored not stored refs pending

The gamma-ray and Optical Variability Analysis of the BL Lac Object 3FGL J0449.4-4350

Haiming Zhang, Huaizhen Li, Li Ma, Lisheng Mao, Tingfeng Yi, Xing Yang, Yan Zhang

arxiv:2003.11280 v1 · 2020-03-25 · 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{7DPEZWTX4R46IXWJ64GRZGR6BD}

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	2026-07-05T00:51:44.212643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8de4cda77e479e45ec9f70d1c9a3e08f28139c25b69960c2dd943cc7daf029f

Aliases

arxiv: 2003.11280 · arxiv_version: 2003.11280v1 · doi: 10.48550/arxiv.2003.11280 · pith_short_12: 7DPEZWTX4R46 · pith_short_16: 7DPEZWTX4R46IXWJ · pith_short_8: 7DPEZWTX

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/7DPEZWTX4R46IXWJ64GRZGR6BD \
  | 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: f8de4cda77e479e45ec9f70d1c9a3e08f28139c25b69960c2dd943cc7daf029f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f50cf1dfc53918420d732fc88bffc3cc5a474f92d01e017fc54ead798744cb73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-03-25T08:55:01Z",
    "title_canon_sha256": "1bfa8d46c1abcdf663184b21edf56db51e768507a0ac1d8adbb3f050c1b82e10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.11280",
    "kind": "arxiv",
    "version": 1
  }
}