Pith Number

pith:MYY47UTK

pith:2015:MYY47UTKNLQRJ5UHAQ7NWBBW4L

not attested not anchored not stored refs pending

Bayesian total evidence dating reveals the recent crown radiation of penguins

Alexandra Gavryushkina, Alexei J. Drummond, Daniel T. Ksepka, David Welch, Tanja Stadler, Tracy A. Heath

arxiv:1506.04797 v2 · 2015-06-15 · 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{MYY47UTKNLQRJ5UHAQ7NWBBW4L}

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	2026-05-18T00:52:17.750145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6631cfd26a6ae114f687043edb0436e2d90fe2650fb4a52763820162df6ed0ae

Aliases

arxiv: 1506.04797 · arxiv_version: 1506.04797v2 · doi: 10.48550/arxiv.1506.04797 · pith_short_12: MYY47UTKNLQR · pith_short_16: MYY47UTKNLQRJ5UH · pith_short_8: MYY47UTK

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/MYY47UTKNLQRJ5UHAQ7NWBBW4L \
  | 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: 6631cfd26a6ae114f687043edb0436e2d90fe2650fb4a52763820162df6ed0ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f8d44cad3e3c296599dea2672d37437f97e694fb40261606ec2bfd830cd07a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-06-15T23:10:49Z",
    "title_canon_sha256": "7bad3c3d1dc253425329fe4197ea06acd2055abb32c1f345b21494a9706c8b37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.04797",
    "kind": "arxiv",
    "version": 2
  }
}