Pith Number

pith:54XEVO4J

pith:2020:54XEVO4JWNXA2CC6UXFIRT2TUN

not attested not anchored not stored refs pending

Replacements and Replaceables: Making the Case for Code Variants

Anita Sarma, Devika Sondhi, Rahul Purandare, Sumit Keswani, Venkatesh Vinayakarao

arxiv:2006.03844 v2 · 2020-06-06 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{54XEVO4JWNXA2CC6UXFIRT2TUN}

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	2026-07-05T01:09:59.413039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef2e4abb89b36e0d085ea5ca88cf53a34cf4e92cc127ead6a8f4ffda749b3fa6

Aliases

arxiv: 2006.03844 · arxiv_version: 2006.03844v2 · doi: 10.48550/arxiv.2006.03844 · pith_short_12: 54XEVO4JWNXA · pith_short_16: 54XEVO4JWNXA2CC6 · pith_short_8: 54XEVO4J

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/54XEVO4JWNXA2CC6UXFIRT2TUN \
  | 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: ef2e4abb89b36e0d085ea5ca88cf53a34cf4e92cc127ead6a8f4ffda749b3fa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42ed61967a3a86386306e33971bf3c94c83d383e84cc0545f314b4e13acb5df2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2020-06-06T11:00:16Z",
    "title_canon_sha256": "792245a0241d09e195c31f46f162deb56e7a767d07363267a5d2d6b244ca5441"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.03844",
    "kind": "arxiv",
    "version": 2
  }
}