Pith Number

pith:2DYQBS6E

pith:2021:2DYQBS6EOIXIIJVC2KBFMSST6K

not attested not anchored not stored refs pending

It's good to be popular in high school: A look at disparities in STEM AP offerings in Northern California public high schools

Bree Barnett Dreyfuss, David Marasco

arxiv:2106.05456 v1 · 2021-06-10 · physics.ed-ph · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DYQBS6EOIXIIJVC2KBFMSST6K}

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	2026-07-05T04:24:09.490445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0f100cbc4722e8426a2d282564a53f2b9edb9e43aa5a81e7cc44cc8f78408ca

Aliases

arxiv: 2106.05456 · arxiv_version: 2106.05456v1 · doi: 10.48550/arxiv.2106.05456 · pith_short_12: 2DYQBS6EOIXI · pith_short_16: 2DYQBS6EOIXIIJVC · pith_short_8: 2DYQBS6E

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/2DYQBS6EOIXIIJVC2KBFMSST6K \
  | 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: d0f100cbc4722e8426a2d282564a53f2b9edb9e43aa5a81e7cc44cc8f78408ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f9e36359355f7d7a2de076a348e67ad89d7e2017154ef185bee891bdae4d13c",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2021-06-10T02:01:03Z",
    "title_canon_sha256": "65a2a3b8f565c5284311b0af5c10753f5f5af8d18e9049b6ea7528017b32aeb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.05456",
    "kind": "arxiv",
    "version": 1
  }
}