Pith Number

pith:EN7WZQPE

pith:2013:EN7WZQPEERAIGNIAONES77BLSB

not attested not anchored not stored refs pending

Negative Entropy and Black Hole Information

Daegene Song

arxiv:1302.6141 v2 · 2013-01-28 · physics.gen-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{EN7WZQPEERAIGNIAONES77BLSB}

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	2026-05-18T01:51:28.823657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

237f6cc1e4244083350073492ffc2b906aba754a6bd7eafd3da89615f9e222ec

Aliases

arxiv: 1302.6141 · arxiv_version: 1302.6141v2 · doi: 10.48550/arxiv.1302.6141 · pith_short_12: EN7WZQPEERAI · pith_short_16: EN7WZQPEERAIGNIA · pith_short_8: EN7WZQPE

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/EN7WZQPEERAIGNIAONES77BLSB \
  | 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: 237f6cc1e4244083350073492ffc2b906aba754a6bd7eafd3da89615f9e222ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2f95c9609c1ecda916472c35236c7178664a5b7444cde56e9f73c5f5e163989",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2013-01-28T14:25:39Z",
    "title_canon_sha256": "09bdda5a6b3fde98141cf83ff94766c64ff14e2f301934b36d037f6c046e34e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6141",
    "kind": "arxiv",
    "version": 2
  }
}