Pith Number

pith:A2YVI4XN

pith:2011:A2YVI4XNKO4XVXHOWU4AWKEIQA

not attested not anchored not stored refs pending

Natural images from the birthplace of the human eye

Charles Ratliff, David Brainard, Ga\v{s}per Tka\v{c}ik, Grega Mil\v{c}inski, Jennifer M Klein, Lucia H Seyfarth, Patrick Garrigan, Peter Sterling, Vijay Balasubramanian

arxiv:1102.0817 v1 · 2011-02-04 · q-bio.NC · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2YVI4XNKO4XVXHOWU4AWKEIQA}

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	2026-05-18T03:17:12.263338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06b15472ed53b97adceeb5380b2888802294891e036700d4c5cce970807661ec

Aliases

arxiv: 1102.0817 · arxiv_version: 1102.0817v1 · doi: 10.48550/arxiv.1102.0817 · pith_short_12: A2YVI4XNKO4X · pith_short_16: A2YVI4XNKO4XVXHO · pith_short_8: A2YVI4XN

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/A2YVI4XNKO4XVXHOWU4AWKEIQA \
  | 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: 06b15472ed53b97adceeb5380b2888802294891e036700d4c5cce970807661ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb7ba32a9581162f3040e60a47ff94c269aa325c69d161e94264d6a6ef7271d2",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2011-02-04T00:27:48Z",
    "title_canon_sha256": "ee6fb6d06baf3c1e908b581f035e39ef2c45d1b2507c02134732694b08b01905"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0817",
    "kind": "arxiv",
    "version": 1
  }
}