Pith Number

pith:ECR3UCQZ

pith:2015:ECR3UCQZIKIVBB27PZG7ILAEBJ

not attested not anchored not stored refs pending

A Framework for Textbook Enhancement and Learning using Crowdsourced Annotations

Anamika Chhabra, Poonam Saini, Rajesh Shreedhar Bhat, S. R. S. Iyengar

arxiv:1503.06009 v3 · 2015-03-20 · cs.CY · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECR3UCQZIKIVBB27PZG7ILAEBJ}

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	2026-05-18T01:35:32.123550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20a3ba0a19429150875f7e4df42c040a5000436902e96d2106e039447dd5b9d7

Aliases

arxiv: 1503.06009 · arxiv_version: 1503.06009v3 · doi: 10.48550/arxiv.1503.06009 · pith_short_12: ECR3UCQZIKIV · pith_short_16: ECR3UCQZIKIVBB27 · pith_short_8: ECR3UCQZ

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/ECR3UCQZIKIVBB27PZG7ILAEBJ \
  | 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: 20a3ba0a19429150875f7e4df42c040a5000436902e96d2106e039447dd5b9d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b249b5766095e8fe58202be666cee5f5e614a2f041f919fc87d41fe8fe5bd4cd",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2015-03-20T07:25:04Z",
    "title_canon_sha256": "543d38a30018853fe197be118e7f2d763d70a2c9410631a85455a398cde79407"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06009",
    "kind": "arxiv",
    "version": 3
  }
}