Pith Number

pith:FVIG37YS

pith:2013:FVIG37YSIGBCIAXLHVWDIOJNJS

not attested not anchored not stored refs pending

Looking Inside a Black Hole

Alexander R. H. Smith, Robert B. Mann

arxiv:1309.4125 v2 · 2013-09-16 · 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{FVIG37YSIGBCIAXLHVWDIOJNJS}

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	2026-05-18T01:47:36.964021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d506dff1241822402eb3d6c34392d4c8a903512a1b183e69cd39b2fb2d1c6bc

Aliases

arxiv: 1309.4125 · arxiv_version: 1309.4125v2 · doi: 10.48550/arxiv.1309.4125 · pith_short_12: FVIG37YSIGBC · pith_short_16: FVIG37YSIGBCIAXL · pith_short_8: FVIG37YS

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/FVIG37YSIGBCIAXLHVWDIOJNJS \
  | 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: 2d506dff1241822402eb3d6c34392d4c8a903512a1b183e69cd39b2fb2d1c6bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "230b7e9bbad19a3c826c6718d7ba9de6bf1c75a61fe526f1d07f09e70d57d4f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-09-16T21:30:39Z",
    "title_canon_sha256": "d754574ce2bc26a59b7d9505dc244119b4697bbcf7f737d1f83e235863f6c7b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4125",
    "kind": "arxiv",
    "version": 2
  }
}