Pith Number

pith:P5WOYYEK

pith:2012:P5WOYYEKHYGOPAHAIKD6LQETQS

not attested not anchored not stored refs pending

Fiber detection for state surfaces

David Futer

arxiv:1201.1643 v2 · 2012-01-08 · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P5WOYYEKHYGOPAHAIKD6LQETQS}

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	2026-05-18T02:41:43.439289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f6cec608a3e0ce780e04287e5c09384b5d3c33445b1a0b02219127f0545c428

Aliases

arxiv: 1201.1643 · arxiv_version: 1201.1643v2 · doi: 10.48550/arxiv.1201.1643 · pith_short_12: P5WOYYEKHYGO · pith_short_16: P5WOYYEKHYGOPAHA · pith_short_8: P5WOYYEK

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/P5WOYYEKHYGOPAHAIKD6LQETQS \
  | 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: 7f6cec608a3e0ce780e04287e5c09384b5d3c33445b1a0b02219127f0545c428

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d01666f2133b99203b4724738ac30def97a3dbdbc1f1ea92e554e44907c23920",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2012-01-08T17:37:28Z",
    "title_canon_sha256": "104f5f07451d51aa186f6d378775a463ecf05cab3a8ee087cc70878f192c60c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1643",
    "kind": "arxiv",
    "version": 2
  }
}