Marco Verkuijlen (, born 3 April 1967 in Dinther), who performs under the name Marco V and alias Vision 20/20, is a Dutch electronic music DJ. He is considered to be a pioneer of tech trance and one o
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 0x2a1e6a828e8bfc52705131a825a8523f6c50398ceb7c51315896b758f5d5cfb3. 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/3ef2f974-e4d4-4431-b0ea-2d0bc2d38bef.json and https://artists.proofprofile.net/proofs/artist/3ef2f974-e4d4-4431-b0ea-2d0bc2d38bef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flamingo Nights 4 Ibiza Edition [Mixed by Marco V and Jewelz & Scott Sparks]
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 0xbc196e5b205f9777942157819cace276eaa14dcc528432b808adaef188ea32cd. 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/NLBV21300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708265fd4624aae9f6587e0c40cf44d34520742f9d7c6028465bab21f0eaa05d. 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/GBTDG1200521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c14e66fb8e74748d2a9c333a67ce09691e42c48f2a5f85efda1f154672ad2. 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/DELM41302431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f5d7f1666f8b77e88e9fed383b961171b68b80987dc4f211a4a1a27d5e86da. 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/NLE801300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625b65b0093c5b78dcd02de74d4119a2f6237c31a74c6e855cffa9cb8d83e716. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLE801300327.
Let Your Mind - Mikael Weermets & Nico De Andrea Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b31a93fd64d3ffa50c8ce61baa222ea12405c9fc765213e82e722bc0e59d7e2. 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/NLZ541200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61b7a8cdaf76b98ebc0c9586aa0ad5b333466aaddd1b65a4139cdec666a7b1c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE801300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c2e8189ed7545b468bb9fcd8912a8357becd0f2337a9d2369212e3a27ebc8d. 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/NLE801300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c71b7bace91b7e0955be94c4c8d192df97139ca475924eafa8ffcd8076dcf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITZA61200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02543b4a37e68d888030b8104dcd094470c7b8f1d254d5b9180552c4b72dbe64. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE801300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee59245970022ca83e383566f5946a410f5ae3762d86d4ca1da3da9dd4d458. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBLNZ1300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0cb6196a3c6dac633695e9e9c9cc90e5d9937337e0f72ddbff7d32473deebd. 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/NLBV21300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d89a27401a1c3aaa1490b9019759235480819e7a0b9adc3c6f11d16d325916. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE801200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f8e2114f23384bf3c14b1a2cb81492238555d9ce102c89ea325140f61406a3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLM701200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4a25e983703f53ee7cdf480013b0583d8c49d12a805cbdb3331e986d4adc3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH3131211175.
Loops & Tings Relooped - Marco V's Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4084ecb129f1f9a4c76d93b28056f18915c98d4bfe106d2379a31166acd70a97. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE800300018.
50 Best Trance Hits Ever (Extended Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeefb56cd449d1a3ffa86d4f6fb72f800ac717d129b97b45426f2e53d49999ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE800510079.
Simulated (ASOT 1179) - Maarten de Jong Remix
ASOT 1179 - A State of Trance Episode 1179 [Including Live at ASOT 950 (Utrecht, The Netherlands) [Who's Afraid Of 138?!] (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6cc68a140a137bfefb4ba01d24d46d040f3533dc1874d0111d6e7098adec68. 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/NLF712406031.
A State Of Trance Episode 229 (Year Mix 2005)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154bc49a8cc8dacdf3bc0fdd6490c49b18bfbb155682dd82330c761310f06e06. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLF711313687.
Simulated (ASOT 904) [Progressive Pick] - Estiva Remix
ASOT 904 - A State Of Trance Episode 904
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1779a0143355ecc583a69b1fab4fdbbbbe7be8e792a8bad39fb1619b90584cd. 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/NLF711902498.
A State Of Trance 500 (Selected by Armin van Buuren, Markus Schulz, Paul Oakenfold, Cosmic Gate & Andy Moor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf112f846fd0e0a80150bf4406cedab57b2a343f4dca3a1e0a32dcc3090bdf8d1. 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/NLF711505206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961dbc5c07a2bc14bec87a202b2f3c4002a349d76507039b931d46d825d16da6. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLF711504801.