Pith Number

pith:2FA62HAD

pith:2010:2FA62HAD2CZTBPRBFVNU2MM5SK

not attested not anchored not stored refs pending

Robust Simulations and Significant Separations

Lance Fortnow, Rahul Santhanam

arxiv:1012.2034 v1 · 2010-12-09 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2FA62HAD2CZTBPRBFVNU2MM5SK}

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	2026-05-18T04:33:49.142736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d141ed1c03d0b330be212d5b4d319d929d864216400089b9e2712ebf9beb9f13

Aliases

arxiv: 1012.2034 · arxiv_version: 1012.2034v1 · doi: 10.48550/arxiv.1012.2034 · pith_short_12: 2FA62HAD2CZT · pith_short_16: 2FA62HAD2CZTBPRB · pith_short_8: 2FA62HAD

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/2FA62HAD2CZTBPRBFVNU2MM5SK \
  | 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: d141ed1c03d0b330be212d5b4d319d929d864216400089b9e2712ebf9beb9f13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d58c2c6cb61369b40569cb60d4ec640a0d00219de967ef4e2278efec589f730",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2010-12-09T15:47:35Z",
    "title_canon_sha256": "47d719cb960abfe9e680530300f2a71a11f0b71749fe10f811fe055ac0032c58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.2034",
    "kind": "arxiv",
    "version": 1
  }
}