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Protean

Live on Base Mainnet · chainId 8453

Protean Ledger — canonical scientific record

Network
Base Mainnet
Chain ID
8453
Schema
protean.ledger.v1
Deployment block
46,837,000

Proxy

0xE3c261F3C05D4c4710003cd6066EfD95094cf5f0
ScientificAssetPublishedPublic0x905e…875a

Scientific asset: Distinguishing histatin-like metal-coordination candidates by His/Cys motif geometry

Author Protean Labs2026-07-09T17:15:41ZSigned by 0x074a…33de[Bankr automation wallet]

Stored on Base mainnet · chainId 8453

This record lives on the ProteanLedger UUPS proxy at 0xE3c261F3…94cf5f0. The chain is the source of truth — the explorer is a read-only lens.

Network
Base mainnet
Block timestamp
re-indexing — refresh shortly
Recorded by
0x074a…33de[Bankr automation wallet]
Record ID
0x905e0d3f6f875a
Registration transaction
e5638988e6c0269cedview on Basescan ↗
Block
#48,430,163view on Basescan ↗

Verify this record yourself

Four commands. Two terminals. No login. No wallet. No trust in Protean Labs required.

1. Read the record from chain

cast call 0xE3c261F3C05D4c4710003cd6066EfD95094cf5f0 \
  "getRecord(bytes32)" \
  0x905e0d3fa1ec54d1b68009047f37ca966fe7ad2742f10ac7a209dd867a6f875a \
  --rpc-url https://mainnet.base.org

2. Inspect via the indexer JSON API

curl -s https://www.protean.sh/ledger/api/v1/records/0x905e0d3fa1ec54d1b68009047f37ca966fe7ad2742f10ac7a209dd867a6f875a | jq

3. Reproduce the canonical state digest from genesis

curl -sL https://raw.githubusercontent.com/proteanlabs1/ledger-mirror/main/scripts/index_ledger_from_genesis.py -o index.py
python3 index.py --rpc https://mainnet.base.org \
  --proxy 0xE3c261F3C05D4c4710003cd6066EfD95094cf5f0 \
  --db protean.db --from-block 46837000 --once
python3 index.py --digest-only --db protean.db
# Compare against https://www.protean.sh/ledger/api/v1/indexer/digest

4. Confirm published indexer digest

curl -s https://www.protean.sh/ledger/api/v1/indexer/digest | jq '.digest, .record_count, .last_block'

Verification

What we can attest to from indexer state. Replay-artifact + content-digest verification you run yourself — see the verify page for copy-pasteable shell snippets and the public mirror for the canonical reproducibility script.

  1. 01.Record exists on chain (read via indexer)Pass
  2. 02.Indexer captured RecordContentEmitted (content rendered above)Pass
  3. 03.Replay pointer is an external scheme — reader verifies via the cited URL/CID/txPass
  4. 04.Lineage edges loaded from the indexer; walk them via the panels belowPass

All 4 checks passed. The chain says what it says.

Summary

Public thesis/export asset thesis_94691873653c4c8d. Evidence clusters expose a prioritization gap between generic peptide-design pipelines and metal-coordination motifs with antimicrobial relevance. We propose a geometry-aware His/Cys discriminator to separate histatin-like coordinating candidates from proline-rich or transport-optimized peptides lacking matched coordination geometry. Support is indirect: cyclicpeptide and Designing Cyclic Peptides via Harmonic SDE with Atom-Bond Modeling emphasize computable peptide structure design. Contradicting evidence from On the Utility of Chemical Strategies to Improve Peptide Gut Stability constrains any link between motif geometry and protease resistance. Navigating the complexity of oral peptide delivery constrains translation from metallopeptide retrieval to bioavailability claims. Confidence stays moderate, given balanced support and contradiction; the §8 panel adjudicates whether geometry retrieval enriches genuine metallopeptide evidence. Boundary: public research artifact with explicit uncertainty, not biological validation.

Lineage

First-class on-chain edges. Every relation has a typed RelationType and a corresponding event log entry. Click any neighbor to navigate.

Ancestors (0)

No on-chain ancestors. This record is a root in the graph.

Descendants (0)

No on-chain descendants yet. This record is the most recent in its lineage.

Replay pointer

HTTPS replay artifact

The replay pointer references an external HTTPS URL. Fetch it and recompute the cited sha256 to verify.

https://www.protean.sh/export/ledger/replay/lane-balanced/manifest-709fe3a2fede58a1.json#sha256:9e460711b67c578b29d16dc5399231d9a2783e2fe6120a913683aa9eec10ca7e

References

External identifiers cited by this record. Resolved via Crossref / arXiv at build time. The on-chain referencesDigest is 0x87e0…3fd8.

  • thesisthesis:thesis_94691873653c4c8d
  • sha256sha256:709fe3a2fede58a1ce7e574405f84d92366c491ef3f04d69c3f7a27483a2a2c3

Cite this record

Protean Labs. (1970, January 1). Scientific asset: Distinguishing histatin-like metal-coordination candidates by His/Cys motif geometry (Scientific Record No. 0x905e0d3fa1ec54d1b68009047f37ca966fe7ad2742f10ac7a209dd867a6f875a) [Ledger research record]. Protean Ledger, Base Mainnet. https://www.protean.sh/ledger/r/905e0d3f

On-chain metadata

Record ID
0x905e0d3fa1ec54d1b68009047f37ca966fe7ad2742f10ac7a209dd867a6f875a
Record type
ScientificAsset (12)
Lifecycle
Published (7)
Disclosure
Public (4)
Writer
0x074a…33de[Bankr automation wallet]
Registered (UTC)
Published (UTC)
Not yet published
Version
1
References digest
0x87e0cbf8a70516044d3e8e095c1ebe21a41cb219c25b510c822edf0eaa3e3fd8
Raw on-chain JSON ▾
{
  "recordId": "0x905e0d3fa1ec54d1b68009047f37ca966fe7ad2742f10ac7a209dd867a6f875a",
  "priorObjectId": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "recordType": "ScientificAsset",
  "recordTypeIndex": 12,
  "lifecycleState": "Published",
  "lifecycleStateIndex": 7,
  "disclosureState": "Public",
  "disclosureStateIndex": 4,
  "title": "Scientific asset: Distinguishing histatin-like metal-coordination candidates by His/Cys motif geometry",
  "summary": "Public thesis/export asset thesis_94691873653c4c8d. Evidence clusters expose a prioritization gap between generic peptide-design pipelines and metal-coordination motifs with antimicrobial relevance. We propose a geometry-aware His/Cys discriminator to separate histatin-like coordinating candidates from proline-rich or transport-optimized peptides lacking matched coordination geometry. Support is indirect: cyclicpeptide and Designing Cyclic Peptides via Harmonic SDE with Atom-Bond Modeling emphasize computable peptide structure design. Contradicting evidence from On the Utility of Chemical Strategies to Improve Peptide Gut Stability constrains any link between motif geometry and protease resistance. Navigating the complexity of oral peptide delivery constrains translation from metallopeptide retrieval to bioavailability claims. Confidence stays moderate, given balanced support and contradiction; the §8 panel adjudicates whether geometry retrieval enriches genuine metallopeptide evidence. Boundary: public research artifact with explicit uncertainty, not biological validation.",
  "author": "Protean Labs runtime",
  "runtimeId": "2026-07-09T17:15:41Z",
  "replayPointer": "https://www.protean.sh/export/ledger/replay/lane-balanced/manifest-709fe3a2fede58a1.json#sha256:9e460711b67c578b29d16dc5399231d9a2783e2fe6120a913683aa9eec10ca7e",
  "publicationUrl": "https://www.protean.sh/research/thesis/thesis_94691873653c4c8d",
  "references": [
    "thesis:thesis_94691873653c4c8d",
    "sha256:709fe3a2fede58a1ce7e574405f84d92366c491ef3f04d69c3f7a27483a2a2c3"
  ],
  "referencesDigest": "0x87e0cbf8a70516044d3e8e095c1ebe21a41cb219c25b510c822edf0eaa3e3fd8",
  "supersedes": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "retracts": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "publishedAt": 0,
  "registeredAt": 0,
  "writer": "0x074abfb24d3fe2254672dc73f05c9696111033de",
  "version": 1,
  "registerBlock": 48430163,
  "registerTx": "e5638988e69386476080c53c0824abf07ed5d4b4cc11e3e453003c7fc0269ced"
}
LedgerBase Mainnet · chainId 8453Schema protean.ledger.v1
Indexer digestsha256:1585c5…704b