Pith Number

pith:KPMVKM63

pith:2010:KPMVKM63BCLSNJATEUPNGPYAJV

not attested not anchored not stored refs pending

A blackbody is not a blackbox

Matteo Smerlak

arxiv:1010.5696 v2 · 2010-10-27 · physics.class-ph · physics.ed-ph · physics.gen-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{KPMVKM63BCLSNJATEUPNGPYAJV}

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	2026-05-18T04:07:19.886343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53d95533db089726a413251ed33f004d5105ba097500f83f8589b7203ac9aab6

Aliases

arxiv: 1010.5696 · arxiv_version: 1010.5696v2 · doi: 10.48550/arxiv.1010.5696 · pith_short_12: KPMVKM63BCLS · pith_short_16: KPMVKM63BCLSNJAT · pith_short_8: KPMVKM63

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/KPMVKM63BCLSNJATEUPNGPYAJV \
  | 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: 53d95533db089726a413251ed33f004d5105ba097500f83f8589b7203ac9aab6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae68f73e67559fd7c37fb593e23b413a5df1360c31f787a5089134d86405f982",
    "cross_cats_sorted": [
      "physics.ed-ph",
      "physics.gen-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2010-10-27T14:27:39Z",
    "title_canon_sha256": "ce16a5929ae5b352011254abe11e77955b91279ac4783d5d08c78ab126593b47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.5696",
    "kind": "arxiv",
    "version": 2
  }
}