Pith Number

pith:42HEIQ4X

pith:2020:42HEIQ4XSVHOFJXBKS2QQQ2HJW

not attested not anchored not stored refs pending

Learning as We Go: An Examination of the Statistical Accuracy of COVID19 Daily Death Count Predictions

Martin A. Tanner, Noelle I. Samia, Ori Rosen, Roman Marchant, Sally Cripps

arxiv:2004.04734 v4 · 2020-04-09 · stat.OT · 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{42HEIQ4XSVHOFJXBKS2QQQ2HJW}

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	2026-07-05T01:05:12.401378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e68e444397954ee2a6e154b50843474db72ef0c569e7037e9ed2c490e52c9155

Aliases

arxiv: 2004.04734 · arxiv_version: 2004.04734v4 · doi: 10.48550/arxiv.2004.04734 · pith_short_12: 42HEIQ4XSVHO · pith_short_16: 42HEIQ4XSVHOFJXB · pith_short_8: 42HEIQ4X

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/42HEIQ4XSVHOFJXBKS2QQQ2HJW \
  | 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: e68e444397954ee2a6e154b50843474db72ef0c569e7037e9ed2c490e52c9155

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0755448a471ba7dc460d039676862354fcec25bd6b4a8a55268a2d48794fc47",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.OT",
    "submitted_at": "2020-04-09T01:12:12Z",
    "title_canon_sha256": "b4864747593ea77307414e11f4bb2b7b76d1a1b743e7c49a1dadeec926019185"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.04734",
    "kind": "arxiv",
    "version": 4
  }
}