Pith Number

pith:4ZMPLQUP

pith:2025:4ZMPLQUPR6PUCWNL3SSC7UB7MK

not attested not anchored not stored refs pending

Unsupervised training of keypoint-agnostic descriptors for flexible retinal image registration

\'Alvaro S. Hervella, David Rivas-Villar, Jorge Novo, Jos\'e Rouco

arxiv:2505.02787 v3 · 2025-05-05 · 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{4ZMPLQUPR6PUCWNL3SSC7UB7MK}

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	2026-08-14T01:02:45.660695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e658f5c28f8f9f4159abdca42fd03f62b181b1c311110b50a32b475bd633cc5e

Aliases

arxiv: 2505.02787 · arxiv_version: 2505.02787v3 · doi: 10.48550/arxiv.2505.02787 · pith_short_12: 4ZMPLQUPR6PU · pith_short_16: 4ZMPLQUPR6PUCWNL · pith_short_8: 4ZMPLQUP

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/4ZMPLQUPR6PUCWNL3SSC7UB7MK \
  | 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: e658f5c28f8f9f4159abdca42fd03f62b181b1c311110b50a32b475bd633cc5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4746204c4ea9547eb5d68934f88552273e22e062402a42af5e44b4eab5cfa68b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-05-05T17:02:13Z",
    "title_canon_sha256": "4822d7749a21660f9534737f83a3eeb2cdfc5cc8f4d4a0dcde782a664377ea1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.02787",
    "kind": "arxiv",
    "version": 3
  }
}