Pith Number

pith:7FG4CVUV

pith:2019:7FG4CVUVHTJGVWCCP7AV5LGXKR

not attested not anchored not stored refs pending

Change Detection and Notification of Webpages: A Survey

Dulani Meedeniya, Eranga Nimalarathna, Lakmal Meegahapola, Roshan Alwis, Sampath Jayarathna, Vijini Mallawaarachchi

arxiv:1901.02660 v4 · 2019-01-09 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7FG4CVUVHTJGVWCCP7AV5LGXKR}

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	2026-07-05T00:40:53.827293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f94dc156953cd26ad8427fc15eacd7546da748f2558f2db13e3ed28319bf9f2f

Aliases

arxiv: 1901.02660 · arxiv_version: 1901.02660v4 · doi: 10.48550/arxiv.1901.02660 · pith_short_12: 7FG4CVUVHTJG · pith_short_16: 7FG4CVUVHTJGVWCC · pith_short_8: 7FG4CVUV

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/7FG4CVUVHTJGVWCCP7AV5LGXKR \
  | 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: f94dc156953cd26ad8427fc15eacd7546da748f2558f2db13e3ed28319bf9f2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef54a5d4445707f0099000571717ad108676acb13278f23ffd749d08b13adf71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-01-09T10:20:40Z",
    "title_canon_sha256": "1080d03dae4fdecd4b019073cdb7db7ae7308d6d4dd0965dac346a996f309b2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02660",
    "kind": "arxiv",
    "version": 4
  }
}