Pith Number

pith:OBFKNRAF

pith:2013:OBFKNRAFQRIXDF2VXFZA3XJHDJ

not attested not anchored not stored refs pending

Towards experimentally testing the paradox of black hole information loss

Baocheng Zhang, Li You, Ming-Sheng Zhan, Qing-yu Cai

arxiv:1302.1341 v1 · 2013-02-06 · gr-qc · hep-th · 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{OBFKNRAFQRIXDF2VXFZA3XJHDJ}

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	2026-05-18T03:34:24.522052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

704aa6c4058451719755b9720ddd271a4b3d2b1d64785e8ab244a22675891210

Aliases

arxiv: 1302.1341 · arxiv_version: 1302.1341v1 · doi: 10.48550/arxiv.1302.1341 · pith_short_12: OBFKNRAFQRIX · pith_short_16: OBFKNRAFQRIXDF2V · pith_short_8: OBFKNRAF

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/OBFKNRAFQRIXDF2VXFZA3XJHDJ \
  | 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: 704aa6c4058451719755b9720ddd271a4b3d2b1d64785e8ab244a22675891210

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a3ed16cfa0934abe96327cc8255dc552bebac2913819fb2b1dc9e584a373cd0",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-02-06T12:39:55Z",
    "title_canon_sha256": "bb7b6a0f009edce51240171684a8637effa1018b58dca0e70028bcd2ac8ce729"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.1341",
    "kind": "arxiv",
    "version": 1
  }
}