Pith Number

pith:EXTJWEBA

pith:2021:EXTJWEBA3NR5CZRZMQ5QRK2UIH

not attested not anchored not stored refs pending

Intra-Day Variability Observations of Two Dozens of Blazars at 4.8 GHz

Jun Liu, Lang Cui, Ning Chang, Thomas P. Krichbaum, Xiang Liu, Xiaofeng Yang, Xin Wang

arxiv:2108.09054 v1 · 2021-08-20 · astro-ph.HE · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXTJWEBA3NR5CZRZMQ5QRK2UIH}

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	2026-07-05T03:07:33.483411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25e69b1020db63d16639643b08ab5441ea8edda4ca613131e2c3b7f3a36527f3

Aliases

arxiv: 2108.09054 · arxiv_version: 2108.09054v1 · doi: 10.48550/arxiv.2108.09054 · pith_short_12: EXTJWEBA3NR5 · pith_short_16: EXTJWEBA3NR5CZRZ · pith_short_8: EXTJWEBA

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/EXTJWEBA3NR5CZRZMQ5QRK2UIH \
  | 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: 25e69b1020db63d16639643b08ab5441ea8edda4ca613131e2c3b7f3a36527f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c3c9250582c6f6eb356d6363144b3ddb02807d5e0c7fc216b668d2636bc222d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-08-20T08:33:25Z",
    "title_canon_sha256": "66f88c1b27e693de3a3f076e34bf01e03a50ebafea5bf2e7b9d60fc39431900f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.09054",
    "kind": "arxiv",
    "version": 1
  }
}