Mathieu Bordaraud (; born 27 May 1990), better known by his stage name Mathieu Koss, is a French DJ, record producer, and composer from Nancy. In 2017, his cover of "Big Jet Plane" by Angus and Julia
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 0x726a1b2ff942ff5462a1b6574a60f2a0323670ed99832a7d04da117348808a8f. 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/7330cbdd-655c-4a0d-9428-ce862594ffdf.json and https://artists.proofprofile.net/proofs/artist/7330cbdd-655c-4a0d-9428-ce862594ffdf.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 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 0xa2a847310354c40fe92556d70aa70c1cabebc7a303f002de5817be0f19c3bb7d. 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/NLZ542300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab0f7debe972d38781e637b1fdc9f023dc6010dd972e99a752a8e9c6b25c89b. 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/DEXO32376591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88883f71c1280e89e502f8841f0bd1fb3fa98fd7307065d91a5acb64a6c24f1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA062337209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2239c430483f48737b94b2920c01141da5c754236c2f8adf695c83b7b00c41f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12338552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c29cf3043fd17dd07d27813fd93d0a80daa7bae9afc2a5dcdd5f8856546f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEXN82369654.
Comment ne pas te louer ? (Mathieu Koss Remix)
Comment ne pas te louer ? - Mathieu Koss Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e0c360179cf979e6cc145335c3ae18e3e5c4b2187d89b902536137047e9120. 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/FR9W12304176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d90bd0c7647740f99e61ba61b61ab4094f1af330d78f4ebb7ab414c8a4795cf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO32243035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9648f028d01d3690962e4437127b882f01fa9c165f7e6a0f2ac974cf3324dcd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEIW12200210.
Make It Up As We Go (feat. Lockyer Boys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadab3e55a2d0dac71b0002f629c6fbd1934c1a11f02b89b7b4cb32585ffd11c3. 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/FR9W12212032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f500d9ea25c8502998d0014a946133815e558296daa024e8cb1072d8ba7acf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVT62100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f313328e622be24bfdad3ab7c95dbd8e4dcaf5f11d75bf15d7d53369523dffd. 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/FR9W12137563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94baeb8b6e41a8d11fc0867a0cbf54ec8814fb1b364e5f7f52f286895ec1d7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12125554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e945915a33aada5dee83bef88bb8ff78786e7b5c8f9baa33ad66d1e9c1bb2. 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/NLZ542100890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0170c49ea63e8a83c934b5e4bda813b5d39051e7c9f15559a6c6b224d0412b87. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12107905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049ce0165dea85da213435ce9d0c5bead56a6e3094685b0cb64b5e50c72eece0. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/NLF712101559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610cfd412a7c60daa374fff53c1b7c641cf54695451c655ea2ef24f16a501d30. 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/NLF712007380.
Don't Leave Me Now - Brooks Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f90fa0685cc8a2d0d7bd5cedab8bb30c5166d1e17ee2410b96f9bf5c17aa66. 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/NLF712101560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7884bff9e7288f9185e3b6066a86d05b3ff20ea32fc4978f079a4a7a662d5843. 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/FR9W11923469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871e5e993883b52a1bf58b218b5a0718e8659f715259547af6f3e50ca6c5c9b7. 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/FR9W11917264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa99d06a7f831360d4a64ea0bdd5d003f32c9d2eb28f3b9d5244f12208230e3c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11909251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0220136e5db5dc654ed01d7524e84702c596a3949b4d722bf0b4f097bd870212. 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/FR9W11903271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fe7455e59781e92c2ecd493927abe0de355f4cc4c71a8901c6506606fa61c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLZ541800393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea1c1fb2e5223db0e2cde2a6179317a483054cd5bfa1fb7235a5d305cb886e6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXD301700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d866e0ff3e5c523ae4fc1a6f16d0b5e9330b12d1003cdf5cd6602d3f363183. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ541701719.
Love Is A Temple (feat. IRO) - Scorsi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5b6350a284e8de484370dbe152a246962877fe1e0073f4e6fe4dc878cd3d10. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ541701720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbce8d669c147ce97c84de07f4a1be887b48111e9110399b3f068df0e1253292. 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/BXD301700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7b01e8ed75505fc01a840f28b4c20744151933ceea47c971c643ba34eb256. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ541701149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92671fa699d024c9b377984984a83e8c2295a972a75d581a58640c382525e070. 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/NLZ541600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa25103274c3c47b91ecb3197d8d3611c62dd13c4ac189c6a042ef361b88e398. 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/NLZ541600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc87f57cb63a036558b1072acaf3a7c197e142ea4351a969a10bec7630fe1ea. 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/NLZ541600187.
Big Jet Plane (Pharmacist Remix) [Extended Mix]
Big Jet Plane (Pharmacist Remix) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f22512b1e3fd2d30506cb66f5825c92946a3b9afcce3d63a64572b93b1a59d6. 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/NLZ542300237.