Pith Number

pith:5Q5SRROQ

pith:2019:5Q5SRROQ6DWI57A6NGZKH4JXBE

not attested not anchored not stored refs pending

IDStack -- The Common Protocol for Document Verification built on Digital Signatures

Chamin Wickramarathna, Chanaka Lakmal, Chandu Herath, Gihan Dias, Sachithra Dangalla, Shantha Fernando

arxiv:1901.01883 v3 · 2019-01-07 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5Q5SRROQ6DWI57A6NGZKH4JXBE}

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	2026-07-05T03:31:20.115442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec3b28c5d0f0ec8efc1e69b2a3f1370926073ac2d71253bd4f8444b502cd7cd0

Aliases

arxiv: 1901.01883 · arxiv_version: 1901.01883v3 · doi: 10.48550/arxiv.1901.01883 · pith_short_12: 5Q5SRROQ6DWI · pith_short_16: 5Q5SRROQ6DWI57A6 · pith_short_8: 5Q5SRROQ

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/5Q5SRROQ6DWI57A6NGZKH4JXBE \
  | 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: ec3b28c5d0f0ec8efc1e69b2a3f1370926073ac2d71253bd4f8444b502cd7cd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce2df2ba7ebe1685bedc0e5aee5df1915f7328f6af1ded893f8cb909240b081e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-01-07T15:32:37Z",
    "title_canon_sha256": "7ee89602de2f41ca002ee09f09d0c26d324ac18c3f486161069866ae8364de53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01883",
    "kind": "arxiv",
    "version": 3
  }
}