Pith Number

pith:TZN4TN2U

pith:2021:TZN4TN2UUDFASRXZ3OIODEFDJ4

not attested not anchored not stored refs pending

Digital color codes of stars

Jan-Vincent Harre, Ren\'e Heller

arxiv:2101.06254 v2 · 2021-01-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZN4TN2UUDFASRXZ3OIODEFDJ4}

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	2026-07-05T02:18:07.083931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e5bc9b754a0ca0946f9db90e190a34f294c4592c707290e21a2373c2515e2fb

Aliases

arxiv: 2101.06254 · arxiv_version: 2101.06254v2 · doi: 10.48550/arxiv.2101.06254 · pith_short_12: TZN4TN2UUDFA · pith_short_16: TZN4TN2UUDFASRXZ · pith_short_8: TZN4TN2U

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/TZN4TN2UUDFASRXZ3OIODEFDJ4 \
  | 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: 9e5bc9b754a0ca0946f9db90e190a34f294c4592c707290e21a2373c2515e2fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2b6357e16ae1483bef3fe207bbea53a0ea89709825cf096f940e61ec9e4bbdb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-01-15T18:37:52Z",
    "title_canon_sha256": "79809d45ee84ad59082f967904dd9dc065952d28dd3e13cdaaedfe093e397be9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.06254",
    "kind": "arxiv",
    "version": 2
  }
}