Pith Number

pith:DOPQTNJK

pith:2016:DOPQTNJKHKDTWRB5UUNRV4EAVM

not attested not anchored not stored refs pending

AST: A library for modelling and manipulating coordinate systems

David Berry, Rodney Warren-Smith, Tim Jenness

arxiv:1602.06681 v1 · 2016-02-22 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DOPQTNJKHKDTWRB5UUNRV4EAVM}

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	2026-05-18T01:19:40.233818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b9f09b52a3a873b443da51b1af080ab3d95ed6b95a325a05514a4d288dc4bb4

Aliases

arxiv: 1602.06681 · arxiv_version: 1602.06681v1 · doi: 10.48550/arxiv.1602.06681 · pith_short_12: DOPQTNJKHKDT · pith_short_16: DOPQTNJKHKDTWRB5 · pith_short_8: DOPQTNJK

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/DOPQTNJKHKDTWRB5UUNRV4EAVM \
  | 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: 1b9f09b52a3a873b443da51b1af080ab3d95ed6b95a325a05514a4d288dc4bb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c459a25397ef7de2e0eb88b7ce2c8c10231b0df85cf242ccb6e5b57a7713e86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2016-02-22T08:36:23Z",
    "title_canon_sha256": "c017cc1fedc8e851f50b5b531b56dda9371d46fa1c21ba7f691b238587755c27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.06681",
    "kind": "arxiv",
    "version": 1
  }
}