BlackRock Select Treasury Based Liquidity Fund, OnChain Shares (DOLXX), BSTBL token
Subscribers see which of their clients hold this program and whether each household qualifies under these terms, and Ketju emails them when the file changes. $299 per firm per month, first 30 days free.
The verdict is on the memo: BlackRock Select Treasury Based Liquidity Fund, OnChain Shares (DOLXX), BSTBL token Not approved
Eligibility
Each answer quotes the issuer’s own words from the document named under it. Ketju reads each document again and records whether the words are still there. Where the documents say nothing, the row states that.
- What the holder owns
The token is the fund share: the chain records, joined to BNY’s off-chain list of who owns each wallet, are the fund’s official register.
“Such blockchain records, together with an off‑chain register associating wallet addresses with shareholder personal identifying information, will constitute the official shareholder register of the Fund and, in the absence of a technical failure of either of those systems, conclusively govern the record ownership of the OnChain Shares.”
SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · Prospectus, Fund Overview, “Use of the Blockchain” · words found 2026-09-23
- Who may hold it
U.S. residents; the shares are registered for sale only in the United States and some territories.
“OnChain Shares of the Fund are only registered for sale in the United States and certain of its territories. Consequently, the Fund generally does not accept investments from non‑U.S. residents.”
SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · Prospectus, Account Information, “Purchase of OnChain Shares” · words found 2026-09-23
- Who may hold it
Only wallets the transfer agent has registered and verified may buy.
“OnChain Shares will be issued as permissioned ERC-20 Tokens on Ethereum, a public blockchain, and may be purchased only by investors whose blockchain wallet addresses have been registered with, and verified by, the Transfer Agent.”
SEC EDGAR: OnChain Shares summary prospectus (497K), 3 August 2026 · Summary prospectus, “Purchase and Sale of OnChain Shares” · words found 2026-09-23
- First purchase minimum
$3 million first purchase for institutions, which the fund’s officers may reduce or waive; no minimum after that.
“Minimum Initial Investment $3 million for institutions. Minimum Additional Investment No subsequent minimum.”
SEC EDGAR: OnChain Shares summary prospectus (497K), 3 August 2026 · Summary prospectus, “Purchase and Sale of OnChain Shares” · words found 2026-09-23
- Account types
The minimum applies to institutions. The prospectus expects some record owners to be accounts at crypto banks whose customers may be stablecoin issuers.
“certain record owners of OnChain Shares are expected to be trust or other accounts maintained by state or federally chartered crypto banks or other financial intermediaries in the crypto ecosystem”
SEC EDGAR: OnChain Shares summary prospectus (497K), 3 August 2026 · Summary prospectus, “Payments to Broker/Dealers and Other Financial Intermediaries” · words found 2026-09-23
- Who it may be transferred to
Holder to holder at any hour, but only between wallets the transfer agent has whitelisted; newly minted tokens are locked until the next business day.
“Before transferring OnChain Shares, you (as the transferor) and the potential transferee must each have an active, permissioned (i.e., “whitelisted”) account registered with the Transfer Agent.”
SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · Prospectus, Account Information, “Peer-to-Peer Transfers of OnChain Shares” · words found 2026-09-23
- How a holder redeems
The transfer agent burns tokens moved to the Redemption Wallet by 5:00 p.m. Eastern that day, and the fund typically wires dollars the same day.
“Tokens will be burned from the Redemption Wallet on the same Business Day on which the redemption request is received in good order, and payment for redeemed OnChain Shares will typically be wired in federal funds on that same day, provided the Fund’s custodian is also open for business.”
SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · Prospectus, Account Information, “Redemption of OnChain Shares” · words found 2026-09-23
- Who keeps the official record
BNY Mellon Investment Servicing keeps the official record of ownership on a public chain, through a permissioned system.
“The Fund’s transfer agent, BNY Mellon Investment Servicing (US) Inc. (the “Transfer Agent”), maintains the official record of ownership of OnChain Shares on a public blockchain that is used by the Fund’s investors.”
SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · Prospectus, Fund Overview, “Use of the Blockchain” · words found 2026-09-23
- What the issuer says it can freeze or take back
The fund may freeze a holder’s wallet to comply with money laundering and sanctions law, and the transfer agent’s contracts can claw back tokens.
“The Fund also reserves the right to freeze shareholder wallets or otherwise restrict their ability to send or receive OnChain Shares from other wallets in order to comply with applicable money laundering, sanctions or other laws.”
SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · Prospectus, General Information, “Anti-Money Laundering Requirements” · words found 2026-09-23
| Fact | Answer |
|---|---|
| Who onboards the holder | issuer |
| Voting rights | Yes |
| Distributions | new tokens |
| SIPC coverage of the wallet | No |
The transfer agent’s SEC record
A transfer agent registers with the SEC on Form TA-1 and reports each year on Form TA-2: how many securityholder accounts it keeps and for how many issues it keeps the master securityholder file, the list that says who owns each share.
| Agent | SEC file | TA-2 period | Accounts | Issues with master file | Work it hires out |
|---|---|---|---|---|---|
| BNY Mellon Investment Servicing (US) Inc. | 084-01761 | 2025-12-31 | 2,971,312 | 5,310 | BNY Mellon International Operations (India) Private Ltd; ExlService Phillippines, Inc.; ExlService.com, LLC |
Who controls it
Ketju read these powers from the deployed contracts and their verified source code: the token and every contract it checks on a transfer. A power listed here is something the issuer can do; it does not mean the issuer has used it.
| Chain | Freeze a holder | Pause | Claw back | Gate holders | Change the code | Keys held by |
|---|---|---|---|---|---|---|
| Ethereum | Yes | Yes | Yes | Yes | Yes | A single key can pause transfers and freeze a holder and claw back tokens. A single key, through a contract, can change the code with no delay. |
Who holds the keys
Ketju read every current holder of each power from the chain on 2026-09-23. A single key is one private key, and whoever holds it acts alone. A multisig needs the stated number of signers. A timelock delays every action, so holders can see it before it takes effect.
| Chain | Key | What it can do | Held by | Address |
|---|---|---|---|---|
| Ethereum | Owner | grant and revoke these powers, decide who may hold, pause transfers, freeze a holder, mint new tokens, claw back tokens | a single key | 0x0fc1…5cea |
| Ethereum | Proxy admin | change the code | a contract run by a single key | 0x628d…3909 |
Ethereum: 4 contract reads, 6 functions in verified source, 2026-09-23
- eip1967.implementation=0x308ce697ba00ba7ff016484399cbc802c1c9e215
- eip1967.admin=0x628d3e5eb2d1a3fa294ccdc00a324b61836d3909
- owner()=0x0fc190f3e3b36530a67443663118195577285cea
- paused()=false
- _isWhitelisted in verified source 0x308c…e215
- freeze in verified source 0x308c…e215
- pause in verified source 0x308c…e215
- burn in verified source 0x308c…e215
- mint in verified source 0x308c…e215
- upgradeTo in verified source 0x308c…e215
Where it trades
| Venue | Kind |
|---|---|
| BlackRock Liquidity Service Center and the Cachematrix order portal | issuer primary |
Redemption
| Route | Cutoff | Settlement | Settles in |
|---|---|---|---|
| Redeem with the fund at NAV by the daily cutoff | 17:00 America/New_York | The holder moves the tokens to the fund’s Redemption Wallet by 5:00 p.m. Eastern on a business day, or calls the Liquidity Service Center if it cannot redeem on chain. The transfer agent burns the tokens that day. The fund typically wires federal funds the same day if its custodian is open, and otherwise on the custodian’s next open day. | USD |
- BlackRock changes who may hold, the $3 million minimum, the 5:00 p.m. cutoff, or same-day payment
- The implementation, owner, or proxy admin of the Ethereum token changes, or the owner moves from a single key to a multisig or timelock
- The fund adds a chain other than Ethereum for OnChain Shares; Ketju then reads that contract
- The single holder is joined by others or leaves, or the fund breaks its dollar price, suspends redemptions, or limits peer-to-peer transfers
- Regulators issue GENIUS Act rules that exclude money market fund shares from stablecoin reserves or cap them
Daily checks
Every day Ketju reads each control function in the table above and the contracts the token checks on a transfer. Ketju compares the token’s on-chain supply with yesterday’s, and its market quote with its one-dollar value. Ketju also reads every document quoted above and reviews the file again if a quoted passage disappears from its document. Ketju reads EDGAR for the transfer agent’s registration and reviews the file again when a new filing appears. Ketju counts a new, removed, or changed key as a change only when the chain’s own log shows the grant, revocation, or signer change since yesterday. If the log does not show it, Ketju updates the key list in this file and does nothing more. A change opens a review before any client action. Subscribers get an email that names each of their clients who hold the token, with the household result.
File history
Ketju has not revised this file since filing it. If Ketju revises it, the earlier version stays as published, with the reason.
| Date | Change |
|---|---|
| 2026-09-23 | Filed. |
Sources
- SEC EDGAR: BlackRock Liquidity Funds Form N-1A post-effective amendment (485BPOS), OnChain Shares prospectus for BlackRock Select Treasury Based Liquidity Fund, 31 July 2026 · primary · accessed 2026-09-23
Supports: government money market fund under Rule 2a-7, formerly BlackRock Liquid Federal Trust Fund, GENIUS Act eligible reserve asset, ERC-20 tokens on Ethereum, BNY Mellon Investment Servicing keeps the official record, chain plus off-chain register is the official register, U.S. and territories only, whitelisted wallets, new tokens locked until next business day, 5:00 p.m. cutoff, same-day burn and wire, off-chain redemption by phone, freeze and claw back, burn and reissue on error, $100,000 small-account redemption, not listed on an exchange or ATS, monthly dividends reinvested as new tokens - SEC EDGAR: OnChain Shares summary prospectus (497K), 3 August 2026 · primary · accessed 2026-09-23
Supports: $3 million for institutions, management fee 0.20%, net expense 0.17% after waiver through June 30, 2028, permissioned ERC-20 on Ethereum, crypto intermediaries, no OnChain Shares outstanding at the prospectus date - SEC EDGAR: BlackRock Liquidity Funds statement of additional information (497), 3 August 2026 · primary · accessed 2026-09-23
Supports: OnChain Shares ticker DOLXX, blockchain section applies only to this fund and class, BNY Mellon Investment Servicing transfer agent - BlackRock: BlackRock Select Treasury Based Liquidity Fund, OnChain Shares product page · primary · accessed 2026-09-23
Supports: DOLXX, CUSIP 09250C572, fund size $6,468.1 million, class size $11.9 million, performance start 31 July 2026, WAM 20 days, daily distribution factor, AAAm, AAAmmf, Aaa-mf - SEC EDGAR: BNY Mellon Investment Servicing (US) Inc., Form TA-1/A, 12 June 2026 · primary · accessed 2026-09-23
Supports: SEC-registered transfer agent, file 084-01761 - Verified BSTBL implementation on Ethereum (Sourcify, FundBNRV1) · primary · accessed 2026-09-23
Supports: owner-only whitelist, freeze, pause, mint, and burn from any wallet, mintLockToken - Blockscout: BSTBL token on Ethereum (name, supply, holders, mints) · secondary · accessed 2026-09-23
Supports: on-chain name names the fund, supply 11,902,847.27, one holder, mints since 6 August 2026, created 4 August 2026