Pith Number

pith:QQ5VVE7B

pith:2019:QQ5VVE7B27QPH47MLGBF54GO7Y

not attested not anchored not stored refs pending

The Stefan problem with variable thermophysical properties and phase change temperature

Marc Calvo-Schwarzw\"alder, Matthew G. Hennessy, Timothy G. Myers

arxiv:1904.05698 v1 · 2019-04-11 · physics.comp-ph · 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{QQ5VVE7B27QPH47MLGBF54GO7Y}

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	2026-05-17T23:48:48.731980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

843b5a93e1d7e0f3f3ec59825ef0cefe208f4a0a7c78dfab6dc0701adce12316

Aliases

arxiv: 1904.05698 · arxiv_version: 1904.05698v1 · doi: 10.48550/arxiv.1904.05698 · pith_short_12: QQ5VVE7B27QP · pith_short_16: QQ5VVE7B27QPH47M · pith_short_8: QQ5VVE7B

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/QQ5VVE7B27QPH47MLGBF54GO7Y \
  | 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: 843b5a93e1d7e0f3f3ec59825ef0cefe208f4a0a7c78dfab6dc0701adce12316

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96bc411198d80a673ece088aa825311cf469e3b37a7496fe56e95bd1f9e01a62",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2019-04-11T13:59:25Z",
    "title_canon_sha256": "b1c0cbacd3f2fa6bd96e1cb40ae6828d467770cec593f382192d2a4b0a96ec8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05698",
    "kind": "arxiv",
    "version": 1
  }
}