Pith Number

pith:C62ZL5TG

pith:2019:C62ZL5TGHZLDLD6AGIZ5ZOJWBP

not attested not anchored not stored refs pending

First Law of Entanglement Entropy in Flat-Space Holography

Mehdi Hakami Shalamzari, Reza Fareghbal

arxiv:1908.02560 v2 · 2019-08-07 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C62ZL5TGHZLDLD6AGIZ5ZOJWBP}

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	2026-07-05T00:20:18.061386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17b595f6663e56358fc03233dcb9360bde1a356e3667d32600cd0b35642dcf22

Aliases

arxiv: 1908.02560 · arxiv_version: 1908.02560v2 · doi: 10.48550/arxiv.1908.02560 · pith_short_12: C62ZL5TGHZLD · pith_short_16: C62ZL5TGHZLDLD6A · pith_short_8: C62ZL5TG

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/C62ZL5TGHZLDLD6AGIZ5ZOJWBP \
  | 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: 17b595f6663e56358fc03233dcb9360bde1a356e3667d32600cd0b35642dcf22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "283408ce864af01e94339a44e118ca64d91c3b37ec12df196eda09b89b00cb72",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2019-08-07T12:22:24Z",
    "title_canon_sha256": "1980e10e827bd9be0531af137ebf67eb7fc2895f937ffabb16462f39c79f1324"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02560",
    "kind": "arxiv",
    "version": 2
  }
}