Pith Number

pith:NVRWDNDU

pith:2016:NVRWDNDU5JWDQNU46J6PIEQEZJ

not attested not anchored not stored refs pending

On the Chen Conjecture regarding the complexity of QCSPs

Barnaby Martin

arxiv:1607.03819 v1 · 2016-07-13 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NVRWDNDU5JWDQNU46J6PIEQEZJ}

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	2026-05-18T01:11:05.627947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d6361b474ea6c38369cf27cf41204ca5171cc31a8472958f53528be9946f0ec

Aliases

arxiv: 1607.03819 · arxiv_version: 1607.03819v1 · doi: 10.48550/arxiv.1607.03819 · pith_short_12: NVRWDNDU5JWD · pith_short_16: NVRWDNDU5JWDQNU4 · pith_short_8: NVRWDNDU

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/NVRWDNDU5JWDQNU46J6PIEQEZJ \
  | 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: 6d6361b474ea6c38369cf27cf41204ca5171cc31a8472958f53528be9946f0ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0db698090dcb5534eb0052f6a9d081830598c3fcf417b6490c4fe17308f045b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-07-13T16:33:05Z",
    "title_canon_sha256": "1e1a59df69eebb516e5ae2de4b944db1ef654cb344e91faebf722542693518b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.03819",
    "kind": "arxiv",
    "version": 1
  }
}