Pith Number

pith:GQ3FGJ4O

pith:2019:GQ3FGJ4OYSCE7YHTN3RDORXK6Q

not attested not anchored not stored refs pending

Nonlinear chiral refrigerators

Bjorn Sothmann, David Sanchez, Rafael Sanchez, Rosa Lopez

arxiv:1904.04506 v2 · 2019-04-09 · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GQ3FGJ4OYSCE7YHTN3RDORXK6Q}

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	2026-05-17T23:43:02.630625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

343653278ec4844fe0f36ee23746eaf43ecab96d8b9b223ba9006e73b179d671

Aliases

arxiv: 1904.04506 · arxiv_version: 1904.04506v2 · doi: 10.48550/arxiv.1904.04506 · pith_short_12: GQ3FGJ4OYSCE · pith_short_16: GQ3FGJ4OYSCE7YHT · pith_short_8: GQ3FGJ4O

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/GQ3FGJ4OYSCE7YHTN3RDORXK6Q \
  | 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: 343653278ec4844fe0f36ee23746eaf43ecab96d8b9b223ba9006e73b179d671

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1b7ad394694ec4639dbc901d5d09a5c7517701412344ed24789abeaba7054e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2019-04-09T07:55:51Z",
    "title_canon_sha256": "46d4dd0a475b8f3e0c327815279e5376efca09df922f485bb6ae16fc363d2e2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04506",
    "kind": "arxiv",
    "version": 2
  }
}