Pith Number

pith:QDCYNLYD

pith:2017:QDCYNLYD3UDC2XMZQWDM4DEVAI

not attested not anchored not stored refs pending

A model for an aquatic ecosystem

Ezio Venturino, Han Li Qiao

arxiv:1701.06931 v1 · 2017-01-23 · 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{QDCYNLYD3UDC2XMZQWDM4DEVAI}

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	2026-05-18T00:52:10.097216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80c586af03dd062d5d998586ce0c95022e3e0d6327649aead620f2303f1bd390

Aliases

arxiv: 1701.06931 · arxiv_version: 1701.06931v1 · doi: 10.48550/arxiv.1701.06931 · pith_short_12: QDCYNLYD3UDC · pith_short_16: QDCYNLYD3UDC2XMZ · pith_short_8: QDCYNLYD

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/QDCYNLYD3UDC2XMZQWDM4DEVAI \
  | 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: 80c586af03dd062d5d998586ce0c95022e3e0d6327649aead620f2303f1bd390

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c54d22ce9b47dbbd3dc17566685c107ebd6a0341e433383cb4ead12c6cba902",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2017-01-23T15:54:34Z",
    "title_canon_sha256": "d63d6e755a97457824ea61d3f4f582aaf8d35288683cf08ce80f26697bb610a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06931",
    "kind": "arxiv",
    "version": 1
  }
}