Pith Number

pith:XXIBB6DP

pith:2013:XXIBB6DPT4CCCEZSDMJNPWM276

not attested not anchored not stored refs pending

An inquiry-based laboratory on friction

Vera Montalbano

arxiv:1310.2307 v2 · 2013-10-09 · 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{XXIBB6DPT4CCCEZSDMJNPWM276}

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	2026-05-18T01:23:16.992731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdd010f86f9f042113321b12d7d99affb051cf99f63b4302d7e712a639927fc5

Aliases

arxiv: 1310.2307 · arxiv_version: 1310.2307v2 · doi: 10.48550/arxiv.1310.2307 · pith_short_12: XXIBB6DPT4CC · pith_short_16: XXIBB6DPT4CCCEZS · pith_short_8: XXIBB6DP

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/XXIBB6DPT4CCCEZSDMJNPWM276 \
  | 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: bdd010f86f9f042113321b12d7d99affb051cf99f63b4302d7e712a639927fc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb7cbeb27a6562ac597d81c1f3404b39f82ce0fef3bfc44b004720431bb860ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2013-10-09T00:04:17Z",
    "title_canon_sha256": "ff92fd232bd8c57a8aa0bd89d174ee37f5590cde1f9c65b63e6b9049ceac4df1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2307",
    "kind": "arxiv",
    "version": 2
  }
}