Pith Number

pith:7KDK7GWH

pith:2019:7KDK7GWHMYB3YC73TNUXCBROMC

not attested not anchored not stored refs pending

Manipulating magnetic fields in inaccessible regions by negative magnetic permeability

Jordi Prat-Camps, Mark G. Bason, Nuria Del-Valle, Rosa Mach-Batlle

arxiv:1912.12477 v1 · 2019-12-28 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7KDK7GWHMYB3YC73TNUXCBROMC}

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	2026-07-05T01:46:46.049042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa86af9ac76603bc0bfb9b6971062e60b81f49262989afeb0055ad4d1e210e4a

Aliases

arxiv: 1912.12477 · arxiv_version: 1912.12477v1 · doi: 10.48550/arxiv.1912.12477 · pith_short_12: 7KDK7GWHMYB3 · pith_short_16: 7KDK7GWHMYB3YC73 · pith_short_8: 7KDK7GWH

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/7KDK7GWHMYB3YC73TNUXCBROMC \
  | 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: fa86af9ac76603bc0bfb9b6971062e60b81f49262989afeb0055ad4d1e210e4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a8bbce3c65cfd8effa8ae523c06bfe49cfcc9fce90af37e3f2020c83488da11",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2019-12-28T16:00:05Z",
    "title_canon_sha256": "deba163740c72c67214f1a9b65e3f08c7229b1da952b9631163fecec4c05579a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.12477",
    "kind": "arxiv",
    "version": 1
  }
}