Pith Number

pith:O64WURGR

pith:2012:O64WURGRSISLU7OVCIRYF4GCNY

not attested not anchored not stored refs pending

Phytoplankton competition in deep biomass maximum

Alexei B. Ryabov

arxiv:1201.5211 v1 · 2012-01-25 · q-bio.PE · nlin.AO · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O64WURGRSISLU7OVCIRYF4GCNY}

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	2026-05-18T04:03:55.318938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77b96a44d19224ba7dd5122382f0c26e3acfa6b627d9ef2936cb6176aa698f0a

Aliases

arxiv: 1201.5211 · arxiv_version: 1201.5211v1 · doi: 10.48550/arxiv.1201.5211 · pith_short_12: O64WURGRSISL · pith_short_16: O64WURGRSISLU7OV · pith_short_8: O64WURGR

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/O64WURGRSISLU7OVCIRYF4GCNY \
  | 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: 77b96a44d19224ba7dd5122382f0c26e3acfa6b627d9ef2936cb6176aa698f0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "833027424a1fa70e7b1518ea59d0ab75dd1f3f5657906a3034066a693c68be0f",
    "cross_cats_sorted": [
      "nlin.AO",
      "nlin.PS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-01-25T09:22:13Z",
    "title_canon_sha256": "42b77e3ac9715d08123e4ac613e0f1ff659edeae99102cfde31e1457c7d316b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5211",
    "kind": "arxiv",
    "version": 1
  }
}