Pith Number

pith:ZZCIHEGV

pith:2015:ZZCIHEGVA3IZCHD4GJVFV77ZIH

not attested not anchored not stored refs pending

Light is Heavy

G.W. 't Hooft, M.B. van der Mark

arxiv:1508.06478 v1 · 2015-08-26 · physics.hist-ph · 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{ZZCIHEGVA3IZCHD4GJVFV77ZIH}

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	2026-05-18T01:34:42.871102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce448390d506d1911c7c326a5afff941fc18822db2e185aa4cf24b82d2e271ab

Aliases

arxiv: 1508.06478 · arxiv_version: 1508.06478v1 · doi: 10.48550/arxiv.1508.06478 · pith_short_12: ZZCIHEGVA3IZ · pith_short_16: ZZCIHEGVA3IZCHD4 · pith_short_8: ZZCIHEGV

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/ZZCIHEGVA3IZCHD4GJVFV77ZIH \
  | 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: ce448390d506d1911c7c326a5afff941fc18822db2e185aa4cf24b82d2e271ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87fa54be2b8ea5c74633aa28e5f151daed902606e9828b8adfc06a99bca8e97a",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2015-08-26T13:03:32Z",
    "title_canon_sha256": "da3eea66728f1de89d0a351c96462db2620327bf8d76f0bb8a5051b6259219f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.06478",
    "kind": "arxiv",
    "version": 1
  }
}