Pith Number

pith:3V6VPDCR

pith:2013:3V6VPDCRI6SSUUK6X6U7GDQJVZ

not attested not anchored not stored refs pending

Two-year monitoring of intra-day variability of quasar 1156+295 at 4.8 GHz

B.-R. Liu, J.A. Zensus, J. Liu, L. Fuhrmann, L.-G. Mi, N. Marchili, T.P. Krichbaum, X. Liu

arxiv:1305.5612 v2 · 2013-05-24 · 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{3V6VPDCRI6SSUUK6X6U7GDQJVZ}

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	2026-05-18T03:19:24.048178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd7d578c5147a52a515ebfa9f30e09ae6e1fce7d8090a76956a44028470790b6

Aliases

arxiv: 1305.5612 · arxiv_version: 1305.5612v2 · doi: 10.48550/arxiv.1305.5612 · pith_short_12: 3V6VPDCRI6SS · pith_short_16: 3V6VPDCRI6SSUUK6 · pith_short_8: 3V6VPDCR

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/3V6VPDCRI6SSUUK6X6U7GDQJVZ \
  | 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: dd7d578c5147a52a515ebfa9f30e09ae6e1fce7d8090a76956a44028470790b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c04d16e400ef8a68f1cd2cd5619516f3d80d3fa726f1367473644002d02e1dfb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-05-24T04:36:11Z",
    "title_canon_sha256": "a6488f52eccf895097dceda0447dae6dfc36a60d3cc9cbfa3b8efe7bb2b18ff1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5612",
    "kind": "arxiv",
    "version": 2
  }
}