Pith Number

pith:CBNKLHRY

pith:2015:CBNKLHRYRIS4J52MWMI7TYV4OM

not attested not anchored not stored refs pending

How to coadd images? II. A coaddition image that is optimal for any purpose in the background dominated noise limit

Barak Zackay, Eran O. Ofek

arxiv:1512.06879 v1 · 2015-12-21 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CBNKLHRYRIS4J52MWMI7TYV4OM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:20:07.678982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

105aa59e388a25c4f74cb311f9e2bc731511f7d603dd3fb23b95eb240a081c23

Aliases

arxiv: 1512.06879 · arxiv_version: 1512.06879v1 · doi: 10.48550/arxiv.1512.06879 · pith_short_12: CBNKLHRYRIS4 · pith_short_16: CBNKLHRYRIS4J52M · pith_short_8: CBNKLHRY

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/CBNKLHRYRIS4J52MWMI7TYV4OM \
  | 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: 105aa59e388a25c4f74cb311f9e2bc731511f7d603dd3fb23b95eb240a081c23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "558a2b882e9bd89b4c4797018321ccda5287ac54a3e69d34a2db30a1d5edcb3f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-12-21T21:27:52Z",
    "title_canon_sha256": "a68e52cec9f571c33a920bb3cf2f672f6cfe6af183cee782c08edc77ad75a209"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06879",
    "kind": "arxiv",
    "version": 1
  }
}