Pith Number

pith:ZKW5PHV4

pith:2008:ZKW5PHV4BB5THCNWEDI7562PCG

not attested not anchored not stored refs pending

Information is Not Lost in the Evaporation of 2-dimensional Black Holes

Abhay Ashtekar, Madhavan Varadarajan, Victor Taveras

arxiv:0801.1811 v2 · 2008-01-11 · gr-qc · 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{ZKW5PHV4BB5THCNWEDI7562PCG}

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

Minimum lifetime of a black hole

Receipt and verification

First computed	2026-05-18T02:28:29.709206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

caadd79ebc087b3389b620d1fefb4f11bd2765cad3e3c3f39e366dfb48ca9183

Aliases

arxiv: 0801.1811 · arxiv_version: 0801.1811v2 · doi: 10.48550/arxiv.0801.1811 · pith_short_12: ZKW5PHV4BB5T · pith_short_16: ZKW5PHV4BB5THCNW · pith_short_8: ZKW5PHV4

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/ZKW5PHV4BB5THCNWEDI7562PCG \
  | 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: caadd79ebc087b3389b620d1fefb4f11bd2765cad3e3c3f39e366dfb48ca9183

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a068be14672d7c2485a9209932a11fd94e461e4c563e5e0f79c8dd708ebdeae2",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-01-11T17:36:26Z",
    "title_canon_sha256": "11d26b570a129b3af6562d684adee41fa9752ce7c60f69193d3a4263b61ddf2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.1811",
    "kind": "arxiv",
    "version": 2
  }
}