Jonas Steur (; born 1982) is a Belgian trance DJ and producer. He is known under several additional aliases, most notably Estuera, the name under which he released most of his music until 2005 when he
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f42d41ed0809e28719e36a7881a3d6d4c68ed534d29c071614a4d190569de7b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c719d352-407d-486d-9976-fa7ceb9a6b24.json and https://artists.proofprofile.net/proofs/artist/c719d352-407d-486d-9976-fa7ceb9a6b24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef622d7250a0254f403c831d26d03f07ad810039d85bea43d90f4e669b436dd9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLCY30800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2d907f0ecb3f1d442f26483d825c0ff61f172fe4b651c41ea4087fbe81c566. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE710704601.
Private Party, Vol. 2 (Mixed by Jonas Steur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b5610b389f37f866e6e78e88b6a9dbfa750062adcb661954cd0f124af0d2df. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE711800318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fcb281de93ac8bad674e2bfc4a13caf5290fbc100758d60de97156c0ad8275. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC732100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa27fe88b1658e752602431d857cdfe16f3e66b45622954376d14b6bdf1db0c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC732100507.
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 0x5025382c78669ae84d6882fe16d075b402b390147dea4fc8e9c991147b1fa911. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD682403122.
In Search of Sunrise 19 (mixed by Markus Schulz, Ilan Bluestone & Daniel Wanrooy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6e24be9b1261d87259320c16ee4b827cf8e96c43fd3767910026e77c6ff1d1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD682303531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf94569ee0db196e754dd94d38da3d392aefee9700c0cd6c3b9eaafd973e7f82. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD682303549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2705a957636ce90166b703a4bca5148b52a4e5c83d9c0ba346c5ad7dcca71f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS241202666.
A State Of Trance Episode 229 (Year Mix 2005)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a4149ca8ec3493b1f708d0849fc026a6b0b7acb2c9f3f1a2489542c2309a5a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711313696.
Tales From The South - Jonas Steur's Revision Flow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43380b14e2f0a53e2306b61b05c4f134ee146dd45360aea479617bac0c1e35b7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE710620941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d1f90879f48d900a025afb33f3bae7f9ade9a56c3d29ba57f1b54874eb107a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE710620923.
In Search of Sunrise 6 Mixed by Tiësto (Ibiza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c997d89a819bf7c58f1a22f6a5631823457be2ee3a4ea466626e58a2eaf33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD681803000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cac874985b2e1b8acbb05e080c4a64f8e21b901d783dee0e557e742a178a11. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE710720852.
Tales from the South - Jonas Steur's Revision Flow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cc003ae5b057d4a34306b59fea3b45532cb0a8daf6d75ac47e84befa487aa2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD681802964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259584044dd01d4e41f17f4cbe04371ce4077538832193ef03747ec3066fa477. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD681802966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760676053847db38fe2f1f3d3dc4ea4f85af377af5186e21058c8926c4556c12. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711313681.
Still I Wait - Richard Durand’s In Search of Sunrise Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700bdf7c0661d4a88bdf3e68588152d5a063a94dbd0fe518deb2a8db57197d4a. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE711121512.
A State Of Trance Episode 281 (Year Mix 2006)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8bf2ae2b7c3b68f33a236bbeafa2d17af725faf3f958ce8bfcabdcae480e30. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711313638.