Pith Number

pith:GQJWJHNF

pith:2015:GQJWJHNFAT64IVJGZMX6SN5YYY

not attested not anchored not stored refs pending

Distinguishing Hidden Markov Chains

A. Prasad Sistla, Stefan Kiefer

arxiv:1507.02314 v2 · 2015-07-08 · cs.DS · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GQJWJHNFAT64IVJGZMX6SN5YYY}

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	2026-05-18T01:15:23.512677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3413649da504fdc45526cb2fe937b8c637cddd95430838d48069829ed60ea871

Aliases

arxiv: 1507.02314 · arxiv_version: 1507.02314v2 · doi: 10.48550/arxiv.1507.02314 · pith_short_12: GQJWJHNFAT64 · pith_short_16: GQJWJHNFAT64IVJG · pith_short_8: GQJWJHNF

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/GQJWJHNFAT64IVJGZMX6SN5YYY \
  | 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: 3413649da504fdc45526cb2fe937b8c637cddd95430838d48069829ed60ea871

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "697f53d1dc6ba641567c82e15c43e04a627a1ad6aa50165142c83f1b3c3ad86e",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-07-08T21:14:14Z",
    "title_canon_sha256": "375fbd15e38c6d06ba9897e4db829e821db72c660ad964589940227d2f82f87a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02314",
    "kind": "arxiv",
    "version": 2
  }
}