Vive la Fête () is a Belgian music duo from Ghent, East Flanders, formed in 1997 by Danny Mommens (guitar, vocals) and Els Pynoo (vocals). History Vive la Fête was founded in 1997 when Danny Mommens
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 0x7d2d2baecc008c289d49319805ae17cb12e1c1d5b5625d76bea8b3c9379f174e. 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/c2e6a5d1-cbb2-4fea-b4e9-dcfc8c284b11.json and https://artists.proofprofile.net/proofs/artist/c2e6a5d1-cbb2-4fea-b4e9-dcfc8c284b11.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 0x7f899a21333ebf3b6f3239194bf98e492c54c49778b7b36bcbd056d503bb066c. 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/TCAFR2167481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70a2f3612018426464dd41ce407d11b3c1680b1887d2cf8b2a8455e9fa71fc6. 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/TCAFR2167494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107aad17cccc4d46f5e24195c9106c6f4f6c55f11c8217a9697c632308d58d68. 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/TCAEU2065459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f3f4a760ff368e43794b1dbc52930952e84588aedd605baa35580a0fea4af9. 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/TCAEU2065461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa463924d7e22bce4f759694dd9eea7143c0216743e6693bb2fbb8bfd41007c18. 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/TCAEU2065469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214cbe34d0a92b7c4a52505324293a20a8862bfd9fad6ad1f62e7eca319de5b1. 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/TCAET2029670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab77acbe356209d32b44bdbe587d9a361763c6dc3da61b5598166d58eb8942e. 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/TCAEY2029907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f2b5422e3d76d30f794596838d77f82b92f031d8d5da6c27962e412b5e99d. 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/TCAEY2029920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f73589a4c907a6142c133c549f88ba8b8787127113ef1931dc3d1488105f53. 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/TCAEX2097399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed8ab9bc9ef1e73d3e46c0af72223845d08da75bfe4d62ff5061a3a0218e647. 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/BEY270300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a334789d5b7310a6a29284d02fc86e7db112116e71d09f653b9d6fb56bd65e. 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/BEY270300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe227601147644bd50d122dc266b34fdb5621f459b81280800efd01f4a98ac417. 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/BEY270500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b810e251513463773599b05a7469f9cee5729d5fd0b6849f3c670ab0b709e12. 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/BEY270500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dafc94240a25740a5f7c01c3fd33214ddce793958d97d4f829046bb50b74a5. 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/BEY270200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013d043dacb4632c461a076ce23ef9fd7a703ee6ca0f36b5b8afc5a1ddd915d3. 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/BEY270300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff861a0a3e47f18918ba5e143d653385cc82a807954050daf1181f611463647. 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/TCAEX2004165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d72c1d32edde8b59ad1bc48bc4b86794617f1a050ba003634d8c03eef96608. 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/TCAEW2097767.