Pith Number

pith:4WULCU3W

pith:2018:4WULCU3WNZ5EW3WNXTSP2OFGRP

not attested not anchored not stored refs pending

Entanglement of Purification in Free Scalar Field Theories

Arpan Bhattacharyya, Koji Umemoto, Tadashi Takayanagi

arxiv:1802.09545 v2 · 2018-02-26 · hep-th · cond-mat.str-el · quant-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{4WULCU3WNZ5EW3WNXTSP2OFGRP}

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	2026-05-18T00:17:32.733187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a8b153766e7a4b6ecdbce4fd38a68bcd6013dcaa11a965b82e298b5789c193

Aliases

arxiv: 1802.09545 · arxiv_version: 1802.09545v2 · doi: 10.48550/arxiv.1802.09545 · pith_short_12: 4WULCU3WNZ5E · pith_short_16: 4WULCU3WNZ5EW3WN · pith_short_8: 4WULCU3W

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/4WULCU3WNZ5EW3WNXTSP2OFGRP \
  | 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: e5a8b153766e7a4b6ecdbce4fd38a68bcd6013dcaa11a965b82e298b5789c193

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b70561629e734cffbcdff217a9e96a73d542340a62aa9e36dc4a0e6866dc40d3",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-02-26T19:00:06Z",
    "title_canon_sha256": "98f4784e8650ba59e08889dff34650f499342f03033a3990364208254d884f94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.09545",
    "kind": "arxiv",
    "version": 2
  }
}