Pith Number

pith:VKTMYDGS

pith:2013:VKTMYDGSCZPEFHG7AMVJWZBKH3

not attested not anchored not stored refs pending

Dynamics of a producer-parasite ecosystem on the brink of collapse

Alvaro Sanchez, Andrew Chen, Jeff Gore, Lei Dai

arxiv:1306.3465 v1 · 2013-06-14 · 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{VKTMYDGSCZPEFHG7AMVJWZBKH3}

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	2026-05-18T01:49:16.830230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaa6cc0cd2165e429cdf032a9b642a3ecdae5afd68e0055feca4ba614669213e

Aliases

arxiv: 1306.3465 · arxiv_version: 1306.3465v1 · doi: 10.48550/arxiv.1306.3465 · pith_short_12: VKTMYDGSCZPE · pith_short_16: VKTMYDGSCZPEFHG7 · pith_short_8: VKTMYDGS

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/VKTMYDGSCZPEFHG7AMVJWZBKH3 \
  | 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: aaa6cc0cd2165e429cdf032a9b642a3ecdae5afd68e0055feca4ba614669213e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c5b246a96cde8290c71a7478f8d20715ecdf9027bb3a83adf2be959bba741ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2013-06-14T17:37:25Z",
    "title_canon_sha256": "43d02ad41bedc36acfd8e4049bf841c026ea0cfe731ba669c7b11cc0e229c55d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3465",
    "kind": "arxiv",
    "version": 1
  }
}