Pith Number

pith:7KSB7RFE

pith:2016:7KSB7RFE2F4CFIJWUDO55RVEXP

not attested not anchored not stored refs pending

Evidence for a postreproductive phase in female false killer whales Pseudorca crassidens

Helene Marsh, Ines M Ferreira, Peter B Best, Theoni Photopoulou, Toshio Kasuya

arxiv:1606.04519 v2 · 2016-06-14 · 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{7KSB7RFE2F4CFIJWUDO55RVEXP}

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	2026-05-18T00:51:01.266535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493

Aliases

arxiv: 1606.04519 · arxiv_version: 1606.04519v2 · doi: 10.48550/arxiv.1606.04519 · pith_short_12: 7KSB7RFE2F4C · pith_short_16: 7KSB7RFE2F4CFIJW · pith_short_8: 7KSB7RFE

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/7KSB7RFE2F4CFIJWUDO55RVEXP \
  | 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: faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8a2e694b2529e41e84210a0246bce60f5a249fe16bc592e0e6b4eaeb36a7e28",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2016-06-14T19:33:27Z",
    "title_canon_sha256": "4120c24cd5ffb83830210ec1bb23d510cadb6c6ff9fcd2568c6f04a5e33e2d5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.04519",
    "kind": "arxiv",
    "version": 2
  }
}