Pith Number

pith:RMPO7DHM

pith:2010:RMPO7DHMF2PMCH4YR3HRIGTOYK

not attested not anchored not stored refs pending

Biological Concepts Instrument (BCI): A diagnostic tool for revealing student thinking

Michael W. Klymkowsky, R. Kathleen Garvin-Doxas, Sonia M. Underwood

arxiv:1012.4501 v1 · 2010-12-20 · q-bio.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RMPO7DHMF2PMCH4YR3HRIGTOYK}

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	2026-05-18T04:32:54.206184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b1eef8cec2e9ec11f988ecf141a6ec29c0727feb928ea9565c5acb246662a58

Aliases

arxiv: 1012.4501 · arxiv_version: 1012.4501v1 · doi: 10.48550/arxiv.1012.4501 · pith_short_12: RMPO7DHMF2PM · pith_short_16: RMPO7DHMF2PMCH4Y · pith_short_8: RMPO7DHM

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/RMPO7DHMF2PMCH4YR3HRIGTOYK \
  | 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: 8b1eef8cec2e9ec11f988ecf141a6ec29c0727feb928ea9565c5acb246662a58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32ea88d6ad303e3e368b33af3c699fb8e22e46709e80c95cae2d623056b9165d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "q-bio.OT",
    "submitted_at": "2010-12-20T23:18:58Z",
    "title_canon_sha256": "83fd54c10bc598ff8c35af5c400a008652e9e4d422b53c940651309d3dd0a149"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.4501",
    "kind": "arxiv",
    "version": 1
  }
}