L.E.J, short for Lucie, Élisa and Juliette, sometimes Elijay, is a French band composed of three women from Saint-Denis, a city in Paris' suburbs. They became famous by condensing numerous top songs f
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 0x27db8b3e18ab6e9125f6bf9617a02c89efeb75c510cf6e65438b79cf3b69ce05. 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/31dac2ea-eb6d-46f9-b298-1fed9c6c7927.json and https://artists.proofprofile.net/proofs/artist/31dac2ea-eb6d-46f9-b298-1fed9c6c7927.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 0x0076485fb98f948bd3e46e51fd29df1cf25fe7cdff9da6804d3198ba3676db6f. 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/FRPJW1601360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f199feabcb408f1d1e18eaa69256091ede75245fff7678761a3200aa9db28. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/FRPJW1601370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbd50fa80f4c5a229191695f7519fd8166db8c9520c9f7df664cab5ef521968. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRPJW1601380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a381974a7747f41172ca8a482f35a5681fa6bc171b5e52917ee2268225cec5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRPJW1803000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9116fcfd5811b7bd7d9a308aa009344a72bf87c2de20c045f389eabf5f878fa5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRPJW1803080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad6de8dfd34062e521ecebed0258c9176409966102abb1c9b26a8e05f14b15. 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/FRPJW1803060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b873f727be9f18e6081c094ed23bba17b80e3c93df01ee391e372c1f62990c1. 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/FRPJW1803110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b32a5e8e613dbbca04975cef6aa936e6a43ee98d32c8e812e89352297131d17. 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/FRPJW1803040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6574b2ae28ecf217be83b6083e98a646ea4a3fc1461553ceb02dca4763298bce. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRPJW1803090.
On fait du bruit (Avec le Village d'Eva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beaebb0af78ac88554b58dee2341ab39fc38162a81677f8323a79cf1171e8c6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/FRPJW2003730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512ab928733f3f203b3dda0ba02ec9de974306016bbfd41797ec09ae12e25590. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FR9W12518733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd90e99008979e89f48779058260ae6deabe4197b253860b16f73761192f87b. 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/FRUM71600958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beaebb0af78ac88554b58dee2341ab39fc38162a81677f8323a79cf1171e8c6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRPJW2003730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e07e7883240ca7d30cda947d2030974cacc1118d24d5cd4c588e162f3a19c4. 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/FRT461600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cc7879eab750f4de80f8b48acf31fb4d1f66139d62314258fa6244dd7efa3b. 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/FR9W12216184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a381974a7747f41172ca8a482f35a5681fa6bc171b5e52917ee2268225cec5. 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/FRPJW1803000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a52fe04cdaf46944fe6b416ffeeae6631cb00b05d9d7026169cf1938a999b8. 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/FR44T1910150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ae2abead4d4a1eee7b53f88038340eb54cc9ce96f7c792fb46b50c1c2f4d5. 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/FR44T1910010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5cd263e167be6576dfb8ff41c0c8d974f799688f879cdad05388eb85741285. 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/FR9W12014444.