Pith Number

pith:NE5466MU

pith:2015:NE5466MUAH4EIEA4QO5ID2LB2P

not attested not anchored not stored refs pending

Theoretical ecology without species

Mikhail Tikhonov

arxiv:1504.02550 v4 · 2015-04-10 · 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{NE5466MUAH4EIEA4QO5ID2LB2P}

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	2026-05-18T00:34:39.580773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

693bcf799401f844101c83ba81e961d3daf7de87bbd7372183dbaaadcc362eb6

Aliases

arxiv: 1504.02550 · arxiv_version: 1504.02550v4 · doi: 10.48550/arxiv.1504.02550 · pith_short_12: NE5466MUAH4E · pith_short_16: NE5466MUAH4EIEA4 · pith_short_8: NE5466MU

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/NE5466MUAH4EIEA4QO5ID2LB2P \
  | 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: 693bcf799401f844101c83ba81e961d3daf7de87bbd7372183dbaaadcc362eb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "beaa222e594ff0784c9eaada25a689e8351e10c7dc211e554012577792d8eb7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-04-10T04:52:24Z",
    "title_canon_sha256": "56e1bc10c770ca9c22c0254115ecdce8a7a9e2617b5c50c50dc3bee11415922f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02550",
    "kind": "arxiv",
    "version": 4
  }
}