Pith Number

pith:P3IPDWDB

pith:2013:P3IPDWDBZGBTWCPRFDXFWRMCXS

not attested not anchored not stored refs pending

On the Change in Archivability of Websites Over Time

Justin F. Brunelle, Mat Kelly, Michael L. Nelson, Michele C. Weigle

arxiv:1307.8067 v1 · 2013-07-30 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P3IPDWDBZGBTWCPRFDXFWRMCXS}

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	2026-05-17T23:46:06.815141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ed0f1d861c9833b09f128ee5b4582bcb4a726e95548166eb78c8aa15a24b68a

Aliases

arxiv: 1307.8067 · arxiv_version: 1307.8067v1 · doi: 10.48550/arxiv.1307.8067 · pith_short_12: P3IPDWDBZGBT · pith_short_16: P3IPDWDBZGBTWCPR · pith_short_8: P3IPDWDB

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/P3IPDWDBZGBTWCPRFDXFWRMCXS \
  | 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: 7ed0f1d861c9833b09f128ee5b4582bcb4a726e95548166eb78c8aa15a24b68a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe986ce02060e45d1271fabd2d14cec1f62c0b9e2f4f70683347ae152da3ffd2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2013-07-30T17:52:38Z",
    "title_canon_sha256": "f5423f4e269c7516f75912b53e8211b78894e9a40cd53cec2897871ee4227b39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.8067",
    "kind": "arxiv",
    "version": 1
  }
}