Flip Kowlier (pseudonym of Filip Willy Mariette Cauwelier, born 15 March 1976 in Izegem, West Flanders) is a Belgian singer, songwriter and rapper. He sings in a distinct West Flemish dialect. He is a
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 0x5875b278c1e14414c2168c162ec1a140ba70fc3aa1a9864474f3f3b813d5f16e. 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/f6c92b3e-e309-4520-ab13-f9d751e5c6fe.json and https://artists.proofprofile.net/proofs/artist/f6c92b3e-e309-4520-ab13-f9d751e5c6fe.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 0x8745173d414235865cbe7aef4286fea46b0b43e11ef7083896564724290ef9be. 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/BEX502125001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b44b5e3090f7d8c9bf6499f034548dc16e5c2a5927de222fb3aaf5c10c1c4. 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/BEX501316102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a3a0901595c258d7b348c4bcea89ce0bd213c3febd29eae6ccd06ea257f590. 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/BEX501316104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76198a4d3c4e9118beac4f565239b518af90f1626dc860c75b367c13101b77b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:22:54Z), 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/BEX501316106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa3ec9d90f17aa696af9d05ca477b9d46dca6f24f96a3ed9cf8a03ed46adcdc. 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/BEX501316109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e383d0f780087c7461722838aff1a08a7c97c11a65a143d67186e16c374475c. 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/BEX500403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61456f4e2e07e15850a55ca5839c8729c31d60a85e32503953a38c18b4695765. 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/BEX500608001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a24b970e2b43655fbaa3cd1f8d414508b0138c95422ea8b14cf4954262f6ba. 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/BEX501011901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5268454b796688f96311664203470c4eb0fb412d54f3e05f664c77035a60536a. 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/BEX501012701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683dfcaacbb5fc8a7520c6a9aa8581db5500f265938268e5054d7e09b3768755. 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/BEX501113301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd523fa94ea7ad01a26d86859319c70b19f14be737370ca0e4018a367bf68d4f9. 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/BEX501011702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec480bc4bc35048af6927656c197c05a042d4c88c5ddaaaadb173e90a7bb98. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:37Z), 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/BEX501011703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf080e2c3a8fef9e93eaa3c7d715d29f066112a29921e5f4cdb742a273ccaf52. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:21:04Z), 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/BEX501011706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51af962632b9fdc877089e433402276eaa7192885fc9c78d35910b7057b68a58. 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/BEX501011708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba838a71d313ad8a67a7a5b92c479a8effae4bce9ee85f926680e344184107b. 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/BEX501011711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236aeb4b267850cfaa8ab9f766de6f943b2ba3ce2c2cac6ea431f1e64c51ae4b. 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/BEX500709408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6687ef5fd7bfaca2c6709a6b2b2bc081daa280c6a8d07cb9e52d4ecc24718. 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/BEX500403101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e383d0f780087c7461722838aff1a08a7c97c11a65a143d67186e16c374475c. 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/BEX500403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1a023dd65c9db1b449a2201dd162e6a00adb2fe45ed25d5b35e6a9ec88de65. 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/BEX500403103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530faa2436a37687f907542e80749333425b0f95d7dccc3873f72c29f134e8fc. 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/BEX500403106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee436e984d7cd064659051cb06b5ed9405b0a57cef16f586473a669f31b03786. 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/BEX500403110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc88acbbbbe9dd12ce740b20c23b4228d4ac732b636dff74dc7ef4c8f8f063. 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/BEX500100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea688525067e468f43e6a4a722e09e208b7f6e40073641c7a2bf5d4188d602f. 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/BEX500100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea3c8d357a4cd64aa4c8d34f2d4c4d24dfe247afcd58657b280c380671e6ac. 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/BEX502226501.