Pith Number

pith:FDG5R6CO

pith:2019:FDG5R6COWPQE2TOYV7KNTTX2R3

not attested not anchored not stored refs pending

A 5deg x 5deg deep HI survey of the M81 group

A. Sorgho, C. Carignan, L. Chemin, T. Foster

arxiv:1903.03767 v1 · 2019-03-09 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FDG5R6COWPQE2TOYV7KNTTX2R3}

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	2026-05-17T23:50:55.110432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28cdd8f84eb3e04d4dd8afd4d9cefa8ee9dc6d0c2836eac78e232651a8ddb5d6

Aliases

arxiv: 1903.03767 · arxiv_version: 1903.03767v1 · doi: 10.48550/arxiv.1903.03767 · pith_short_12: FDG5R6COWPQE · pith_short_16: FDG5R6COWPQE2TOY · pith_short_8: FDG5R6CO

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/FDG5R6COWPQE2TOYV7KNTTX2R3 \
  | 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: 28cdd8f84eb3e04d4dd8afd4d9cefa8ee9dc6d0c2836eac78e232651a8ddb5d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efe0a1441c6fae3ac420af746a653d5ee0cb42b7f0c970e035bd56fe16a75306",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-09T09:20:32Z",
    "title_canon_sha256": "c841a0f5460d892e5759a8153fa02f445812f16677e1527e24f361d39497e846"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03767",
    "kind": "arxiv",
    "version": 1
  }
}