Pith Number

pith:OAAM7JV7

pith:2018:OAAM7JV7C4DKXTQQGM3KWW3KBF

not attested not anchored not stored refs pending

McFly: Time-Travel Debugging for the Web

Emery D. Berger, James Mickens, John Vilk, Mark Marron

arxiv:1810.11865 v1 · 2018-10-28 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OAAM7JV7C4DKXTQQGM3KWW3KBF}

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	2026-05-18T00:02:07.191007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7000cfa6bf1706abce103336ab5b6a09467e7b82a9dc06a3ab51ad09db937254

Aliases

arxiv: 1810.11865 · arxiv_version: 1810.11865v1 · doi: 10.48550/arxiv.1810.11865 · pith_short_12: OAAM7JV7C4DK · pith_short_16: OAAM7JV7C4DKXTQQ · pith_short_8: OAAM7JV7

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/OAAM7JV7C4DKXTQQGM3KWW3KBF \
  | 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: 7000cfa6bf1706abce103336ab5b6a09467e7b82a9dc06a3ab51ad09db937254

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c23cc26e8fa2e2434914655df8c365a4930864a3dd16cda3c50ec883658351f5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-10-28T19:27:06Z",
    "title_canon_sha256": "4cbb42121788804a64a69c1f6d31864aa135d04f2b79f8972f3934058a5f2ee6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.11865",
    "kind": "arxiv",
    "version": 1
  }
}