Pith Number

pith:EUGLBY4M

pith:2015:EUGLBY4MW77QZX4NP2S4QR3Q5R

not attested not anchored not stored refs pending

Seeking instructional specificity: an example from analogical instruction

Carl E. Wieman, Eric Kuo

arxiv:1504.06401 v2 · 2015-04-24 · physics.ed-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{EUGLBY4MW77QZX4NP2S4QR3Q5R}

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	2026-05-18T01:25:00.815581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

250cb0e38cb7ff0cdf8d7ea5c84770ec6cc09fdd46517f5d89ff8ca43a9d949f

Aliases

arxiv: 1504.06401 · arxiv_version: 1504.06401v2 · doi: 10.48550/arxiv.1504.06401 · pith_short_12: EUGLBY4MW77Q · pith_short_16: EUGLBY4MW77QZX4N · pith_short_8: EUGLBY4M

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/EUGLBY4MW77QZX4NP2S4QR3Q5R \
  | 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: 250cb0e38cb7ff0cdf8d7ea5c84770ec6cc09fdd46517f5d89ff8ca43a9d949f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf21b64d52558e637be8fd2fa01dab06fc636ccbd2cfa80673c05adb704cc3a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-04-24T05:55:38Z",
    "title_canon_sha256": "6cf6e7dec1958c467eec13c509b529d6eb75536f0fd2c053e456c79db0b8eff0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06401",
    "kind": "arxiv",
    "version": 2
  }
}