Pith Number

pith:F2C7SEG3

pith:2025:F2C7SEG3VABAN3OIDZIRRMIKAF

not attested not anchored not stored refs pending

Unsupervised outlier detection to improve bird audio dataset labels

Bruce Collins

arxiv:2504.18650 v1 · 2025-04-25 · cs.LG · cs.SD · eess.AS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2C7SEG3VABAN3OIDZIRRMIKAF}

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	2026-07-05T10:54:18.432395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e85f910dba80206edc81e5118b10a016baac75b628d36e3829b4651977eb46e

Aliases

arxiv: 2504.18650 · arxiv_version: 2504.18650v1 · doi: 10.48550/arxiv.2504.18650 · pith_short_12: F2C7SEG3VABA · pith_short_16: F2C7SEG3VABAN3OI · pith_short_8: F2C7SEG3

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/F2C7SEG3VABAN3OIDZIRRMIKAF \
  | 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: 2e85f910dba80206edc81e5118b10a016baac75b628d36e3829b4651977eb46e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "798045b0095846cb2b7ca21b1b2358474806518b8ea211d5b61f4031f4f83cbc",
    "cross_cats_sorted": [
      "cs.SD",
      "eess.AS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-04-25T19:04:40Z",
    "title_canon_sha256": "b2eab85152d1a7aacd4a7d2d18ab0cc6e6f23f4bc6296b2f04fcfbf734034b5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.18650",
    "kind": "arxiv",
    "version": 1
  }
}