Pith Number

pith:BN54L645

pith:2021:BN54L645RTMGLR4LCFWVW4J73E

not attested not anchored not stored refs pending

Island Finder and Entropy Bound

Arvin Shahbazi-Moghaddam, Raphael Bousso

arxiv:2101.11648 v3 · 2021-01-27 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BN54L645RTMGLR4LCFWVW4J73E}

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.

Cited by

1 paper in Pith

An apologia for islands

Receipt and verification

First computed	2026-07-05T02:39:37.572653Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b7bc5fb9d8cd865c78b116d5b713fd91ec1ffd76a45610c8fc742bedbcbdae3

Aliases

arxiv: 2101.11648 · arxiv_version: 2101.11648v3 · doi: 10.48550/arxiv.2101.11648 · pith_short_12: BN54L645RTMG · pith_short_16: BN54L645RTMGLR4L · pith_short_8: BN54L645

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/BN54L645RTMGLR4LCFWVW4J73E \
  | 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: 0b7bc5fb9d8cd865c78b116d5b713fd91ec1ffd76a45610c8fc742bedbcbdae3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12e17d5701f1814d497b262573470584a2931625b624abe79f9849f17c60c45d",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2021-01-27T19:10:26Z",
    "title_canon_sha256": "a93debdd9b88b7caae16175f3f9b48260537db746ed5b56b6fb5e62095fb07ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.11648",
    "kind": "arxiv",
    "version": 3
  }
}