Pith Number

pith:AYLMTZWT

pith:2016:AYLMTZWTTH3JRQM3KAEKCSBWWC

not attested not anchored not stored refs pending

Early Evolution of Bird-Type Language without Grammar: Duplication and Mutation

Miki Fukunoue, Osamu Narikiyo

arxiv:1611.03327 v2 · 2016-10-22 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AYLMTZWTTH3JRQM3KAEKCSBWWC}

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	2026-05-18T00:49:31.784578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0616c9e6d399f698c19b5008a14836b082b35716c290098a6b6f79c3ccf45bbd

Aliases

arxiv: 1611.03327 · arxiv_version: 1611.03327v2 · doi: 10.48550/arxiv.1611.03327 · pith_short_12: AYLMTZWTTH3J · pith_short_16: AYLMTZWTTH3JRQM3 · pith_short_8: AYLMTZWT

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/AYLMTZWTTH3JRQM3KAEKCSBWWC \
  | 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: 0616c9e6d399f698c19b5008a14836b082b35716c290098a6b6f79c3ccf45bbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b44df1a6afde20ba643acd41f97a4dfcb6b86bbd19cd3d1ee69ca0131e1512d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2016-10-22T08:06:56Z",
    "title_canon_sha256": "588f490809eed9c65e692fe15cba1189899d99f40a45f94f631763ae0524cc3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.03327",
    "kind": "arxiv",
    "version": 2
  }
}