Pith Number

pith:MMO2JG6M

pith:2021:MMO2JG6MP5G4RSKHVBLTFFPUUP

not attested not anchored not stored refs pending

Being nice to the server: Wrapping a REST API for a cosmological distance/velocity calculator with Python

Bruno S\'anchez, Ehsan Kourkchi, Erik Peterson, Juan Cabral, Martin Beroiz

arxiv:2110.12249 v1 · 2021-10-23 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MMO2JG6MP5G4RSKHVBLTFFPUUP}

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	2026-07-05T03:25:02.082117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

631da49bcc7f4dc8c947a8573295f4a3d052915cb33753d879444f552a9c57a0

Aliases

arxiv: 2110.12249 · arxiv_version: 2110.12249v1 · doi: 10.48550/arxiv.2110.12249 · pith_short_12: MMO2JG6MP5G4 · pith_short_16: MMO2JG6MP5G4RSKH · pith_short_8: MMO2JG6M

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/MMO2JG6MP5G4RSKHVBLTFFPUUP \
  | 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: 631da49bcc7f4dc8c947a8573295f4a3d052915cb33753d879444f552a9c57a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d349b4b16e75ffc9e883d9c2cd97e41048d498f68f756d5f0576adf57d63ea4",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-10-23T15:44:07Z",
    "title_canon_sha256": "450077237d895f6ee7afa792b5a3665a593f783946698a2d69025d957cce5917"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.12249",
    "kind": "arxiv",
    "version": 1
  }
}