Pith Number

pith:JXAR2IUV

pith:2021:JXAR2IUVYILVQRYNKMBPZJR2VT

not attested not anchored not stored refs pending

Entropy of temporal entanglement

Leonardo Castellani

arxiv:2104.05722 v2 · 2021-04-12 · quant-ph · hep-th · physics.hist-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{JXAR2IUVYILVQRYNKMBPZJR2VT}

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	2026-07-05T04:11:05.432863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4dc11d2295c21758470d5302fca63aace3c036288b2d5ee7c8307bda8adbcc3b

Aliases

arxiv: 2104.05722 · arxiv_version: 2104.05722v2 · doi: 10.48550/arxiv.2104.05722 · pith_short_12: JXAR2IUVYILV · pith_short_16: JXAR2IUVYILVQRYN · pith_short_8: JXAR2IUV

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/JXAR2IUVYILVQRYNKMBPZJR2VT \
  | 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: 4dc11d2295c21758470d5302fca63aace3c036288b2d5ee7c8307bda8adbcc3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b95a9a46ed9d30d8547cb3f08ff83a4f2886d5cea79968f02e9ef00fa5047e42",
    "cross_cats_sorted": [
      "hep-th",
      "physics.hist-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-04-12T18:00:01Z",
    "title_canon_sha256": "02086ba9495b70919c3e70034acaf4a1d0c5a91dd90efe65ac06695d1b6b7cc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.05722",
    "kind": "arxiv",
    "version": 2
  }
}