Ben Liebrand (; born 27 September 1960) is a Dutch dance music DJ and remixer. He has produced for artists such as Forrest and MC Miker G & DJ SvenDutch Platinum Sales Award Liebrand.com Dutch Platinu
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e39813b328cc962d0c7feb7593c871f8b03ebeca1a31d69f802e6ce798f35ee. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69bce4e0-36c6-4a1b-96b8-b224740878e3.json and https://artists.proofprofile.net/proofs/artist/69bce4e0-36c6-4a1b-96b8-b224740878e3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f9a129086df0d1feb7a0f0da5bcac791642d9019f2f7cb94e688dcca41863. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP432500126 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2930c3a14d2d6ade64f0a97461e1cfd826f9a42a2da45522a03a476e66c785. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYE8700158 — a six-check JSON result.
Ain't 2 Proud 2 Beg - Ben Liebrand 12" Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb102f7b13f52c83be5f3a489c18e5eca2ca6cd7bb9c9882bf4dfc82166c1f560. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLF29200117 — a six-check JSON result.
Ain't 2 Proud 2 Beg - Ben Liebrand 12" Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd056179df589fee9af4754590e036f8537b19152c762f664cb4f1ee40cb251f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLF21600005 — a six-check JSON result.
Just Get Ready (Ben Liebrand Classic Groove)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe807eec5e04fbd0fe25472431f72d4d43e10a07905af6cdcef06957491f5803a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP432100099 — a six-check JSON result.
Just Get Ready - The Ben Liebrand Funky Groove
Just Get Ready (The Ben Liebrand Funky Groove Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e77551545d99e2504070c60c0b939346639aa5414025479496ba81fdfa7a6e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP432100080 — a six-check JSON result.
Just Get Ready - The Ben Liebrand Funky Groove Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b95ecbca5a9786e7b7bb7938cc88f580cb5d3ef302cdb7f819cda59bdddb102. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP432100081 — a six-check JSON result.
Englishman In New York - Ben Liebrand Mix
...Nothing Like The Sun (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615b80528934f34e2a4f07f85bf6d779853ecfcb79623651fa93d6f330f668e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72207803 — a six-check JSON result.
Englishman In New York - The Ben Liebrand Mix / Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd032399527e19d103f87534c944c560d98e3c5cd8f625436e48bdad8fe8ab6b9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72218004 — a six-check JSON result.
Happy Station - Scratch Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b1503e5e1ddf5a76c3ee73547a1af7128f419c48690e8bf2c02e7ae6b14eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT00D8300109 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a245b01ee73aa565d579b1f438c7a2945305cfe644e61c511f62ec46194d6fc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT00D8500403 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a76f056ee35b12110013ac86601f2b54fd8984ac6fd7ed731ca79b2347b0a3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT00D8700603 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e92fbaab7e001696fa14797d14d1680bcea38ee3ec27c22924c3c2649d5cb6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT00D8300103 — a six-check JSON result.
Happy Station (Ben Liebrand ‘Le Disco’ Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd1637e720b7580824f91052d9c0679c88c2bea46af9f5f501a7c3a29115a2c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT00D2400601 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd13dbec87084cc98513a05733a0e387d3cd94925645fcf2d6972ae159a4644. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT00D8700601 — a six-check JSON result.