Pith Number

pith:TWFGBVGN

pith:2005:TWFGBVGNNPUO5HYALXBWGDPKAG

not attested not anchored not stored refs pending

Information Storage in Black Holes

M. D. Maia

arxiv:gr-qc/0505119 v1 · 2005-05-23 · 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{TWFGBVGNNPUO5HYALXBWGDPKAG}

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	2026-05-18T01:39:20.577394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d8a60d4cd6be8ee9f005dc3630dea01b6c6d8595c71762eecbdbbb77d0d5e60

Aliases

arxiv: gr-qc/0505119 · arxiv_version: gr-qc/0505119v1 · doi: 10.48550/arxiv.gr-qc/0505119 · pith_short_12: TWFGBVGNNPUO · pith_short_16: TWFGBVGNNPUO5HYA · pith_short_8: TWFGBVGN

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/TWFGBVGNNPUO5HYALXBWGDPKAG \
  | 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: 9d8a60d4cd6be8ee9f005dc3630dea01b6c6d8595c71762eecbdbbb77d0d5e60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1241357bf57bc4d85da4daf3b8843175b4f0fdfa480983f944f67a017c145b1a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2005-05-23T18:17:56Z",
    "title_canon_sha256": "14017fbe198c76055da431d726d4cad5de8866749479ede4bb1bef94368a686f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0505119",
    "kind": "arxiv",
    "version": 1
  }
}