Pith Number

pith:IVLSMDZ3

pith:2019:IVLSMDZ3VGT45MCDCH7ADHTBXH

not attested not anchored not stored refs pending

Space-bounded Church-Turing thesis and computational tractability of closed systems

Cristobal Rojas, Jonathan Schneider, Mark Braverman

arxiv:1905.03610 v1 · 2019-05-02 · 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{IVLSMDZ3VGT45MCDCH7ADHTBXH}

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	2026-05-17T23:46:17.377737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4557260f3ba9a7ceb04311fe019e61b9fb654b2b1e85eb548c4e32414023ee9a

Aliases

arxiv: 1905.03610 · arxiv_version: 1905.03610v1 · doi: 10.48550/arxiv.1905.03610 · pith_short_12: IVLSMDZ3VGT4 · pith_short_16: IVLSMDZ3VGT45MCD · pith_short_8: IVLSMDZ3

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/IVLSMDZ3VGT45MCDCH7ADHTBXH \
  | 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: 4557260f3ba9a7ceb04311fe019e61b9fb654b2b1e85eb548c4e32414023ee9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bed2717e43b0bab801700ce96994977ea42b4699c6b4682caa19a81a9f811d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-05-02T15:36:57Z",
    "title_canon_sha256": "70e48bf11902c13ade783944cdc3ab906b9ec9faf74c38d6d7913c4d31236747"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.03610",
    "kind": "arxiv",
    "version": 1
  }
}