Pith Number

pith:XFO7QEPU

pith:2018:XFO7QEPUW7ZXADOIF4KRFOTRTK

not attested not anchored not stored refs pending

The variable quality of metadata about biological samples used in biomedical experiments

Mark A. Musen, Rafael S. Gon\c{c}alves

arxiv:1808.06907 v2 · 2018-08-17 · cs.DB · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XFO7QEPUW7ZXADOIF4KRFOTRTK}

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	2026-05-17T23:52:41.207380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b95df811f4b7f3700dc82f1512ba719ab41fe242837b0d810d31c4cfe7b5378e

Aliases

arxiv: 1808.06907 · arxiv_version: 1808.06907v2 · doi: 10.48550/arxiv.1808.06907 · pith_short_12: XFO7QEPUW7ZX · pith_short_16: XFO7QEPUW7ZXADOI · pith_short_8: XFO7QEPU

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/XFO7QEPUW7ZXADOIF4KRFOTRTK \
  | 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: b95df811f4b7f3700dc82f1512ba719ab41fe242837b0d810d31c4cfe7b5378e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b422c461944fd250d2aa2ec209739f2574fcc646844950f3e3db2576aea1b27",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2018-08-17T18:03:26Z",
    "title_canon_sha256": "1c73efbf81a9c8fa9b45043d90d8ef997de50a69942d124c2314de6b042a8fc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06907",
    "kind": "arxiv",
    "version": 2
  }
}