Pith Number

pith:PYTTE2IP

pith:2020:PYTTE2IPNXTQFP53FZLEITAQYA

not attested not anchored not stored refs pending

PSPACE-completeness of Pulling Blocks to Reach a Goal

Adam Suhl, Dylan Hendrickson, Erik D. Demaine, Hayashi Ani, Jayson Lynch, Jenny Diomidova, Sarah Scheffler, Sualeh Asif

arxiv:2006.04337 v2 · 2020-06-08 · 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{PYTTE2IPNXTQFP53FZLEITAQYA}

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	2026-07-05T07:12:45.122228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e2732690f6de702bfbb2e56444c10c026016da8536319b32b2bca2c1dc27847

Aliases

arxiv: 2006.04337 · arxiv_version: 2006.04337v2 · doi: 10.48550/arxiv.2006.04337 · pith_short_12: PYTTE2IPNXTQ · pith_short_16: PYTTE2IPNXTQFP53 · pith_short_8: PYTTE2IP

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/PYTTE2IPNXTQFP53FZLEITAQYA \
  | 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: 7e2732690f6de702bfbb2e56444c10c026016da8536319b32b2bca2c1dc27847

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4be1e3b5df5ae184d74587dcb8cb5ae9f684ec9ac27c5b9026d354fbe8fcd15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2020-06-08T03:21:45Z",
    "title_canon_sha256": "c7054fd4ecadd4a222dc160690f17399ea0457615995b22c4d4b65d7bc08769b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.04337",
    "kind": "arxiv",
    "version": 2
  }
}