Pith Number

pith:CMTPC4TM

pith:2010:CMTPC4TM2PO5H3JPQDHAI2PVVJ

not attested not anchored not stored refs pending

Complex sequencing rules of birdsong can be explained by simple hidden Markov processes

Kazuo Okanoya, Kentaro Katahira, Kenta Suzuki, Masato Okada

arxiv:1011.2575 v1 · 2010-11-11 · q-bio.NC · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CMTPC4TM2PO5H3JPQDHAI2PVVJ}

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	2026-05-18T02:04:48.989574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1326f1726cd3ddd3ed2f80ce0469f5aa59d0dc0aef8960253689a84117bda245

Aliases

arxiv: 1011.2575 · arxiv_version: 1011.2575v1 · doi: 10.48550/arxiv.1011.2575 · pith_short_12: CMTPC4TM2PO5 · pith_short_16: CMTPC4TM2PO5H3JP · pith_short_8: CMTPC4TM

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/CMTPC4TM2PO5H3JPQDHAI2PVVJ \
  | 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: 1326f1726cd3ddd3ed2f80ce0469f5aa59d0dc0aef8960253689a84117bda245

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2abe264808c1925b39313da2c386bc5ba42e08dc6bcce2f5505c2155831f3ce2",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2010-11-11T06:46:10Z",
    "title_canon_sha256": "a7196adccd961fafbe759ed9f14090587148a7bae6e82ea7c6a6b03a949a420a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2575",
    "kind": "arxiv",
    "version": 1
  }
}