Pith Number

pith:5ZAQWPYF

pith:2015:5ZAQWPYFWOV75Z6MY4QRGIBVPU

not attested not anchored not stored refs pending

Spindown of magnetars: Quantum Vacuum Friction?

Chun-Yuan Gao, Ren-Xin Xu, Xue-Yu Xiong

arxiv:1504.02204 v4 · 2015-04-09 · 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{5ZAQWPYFWOV75Z6MY4QRGIBVPU}

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	2026-05-18T01:22:40.624335Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee410b3f05b3abfee7ccc7211320357d0d5701123d4c2929f36b9c1e4371dee8

Aliases

arxiv: 1504.02204 · arxiv_version: 1504.02204v4 · doi: 10.48550/arxiv.1504.02204 · pith_short_12: 5ZAQWPYFWOV7 · pith_short_16: 5ZAQWPYFWOV75Z6M · pith_short_8: 5ZAQWPYF

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/5ZAQWPYFWOV75Z6MY4QRGIBVPU \
  | 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: ee410b3f05b3abfee7ccc7211320357d0d5701123d4c2929f36b9c1e4371dee8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a66448e79b1e3e4e7c9fce1258febdf9aa0727a46f78df679fde83f9e8f15eb9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-09T06:56:14Z",
    "title_canon_sha256": "8637d43cb46d1cdcb73cfa121b849404806698e92f0693779e060a3255e7255f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02204",
    "kind": "arxiv",
    "version": 4
  }
}