Pith Number

pith:L67FRW4L

pith:2017:L67FRW4LKW3OGDEMHQRESQCM5F

not attested not anchored not stored refs pending

Holographic Entanglement of Purification

Koji Umemoto, Tadashi Takayanagi

arxiv:1708.09393 v2 · 2017-08-30 · hep-th · cond-mat.str-el · quant-ph

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

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.

Cited by

1 paper in Pith

Toward a worldsheet theory of entanglement entropy

Receipt and verification

First computed	2026-05-17T23:58:19.640604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fbe58db8b55b6e30c8c3c2249404ce94f60c507b30d95a3242c74d8d09674a1

Aliases

arxiv: 1708.09393 · arxiv_version: 1708.09393v2 · doi: 10.48550/arxiv.1708.09393 · pith_short_12: L67FRW4LKW3O · pith_short_16: L67FRW4LKW3OGDEM · pith_short_8: L67FRW4L

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/L67FRW4LKW3OGDEMHQRESQCM5F \
  | 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: 5fbe58db8b55b6e30c8c3c2249404ce94f60c507b30d95a3242c74d8d09674a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4f0662dfc0c2d1dcdf4c4eee9502067cc3addf175912997fcf22eb6b797d28e",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2017-08-30T18:00:02Z",
    "title_canon_sha256": "787c7a223cde92f3c49bbec381f2f916873120847ec5f9d23b52c92083fad5c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09393",
    "kind": "arxiv",
    "version": 2
  }
}