La Rumeur () is a French rap band from Élancourt, Yvelines. Founded in 1995, the group is composed of four rappers, Ékoué, Hamé, Mourad, and Philippe, and two DJs, Kool M and Soul G. Considering them
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedd6319210aa28bfe1945d5437e7e63220d61c9a354c439c993f53647246a61. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac9c8936-c55c-4143-9402-8334743d0c60.json and https://artists.proofprofile.net/proofs/artist/ac9c8936-c55c-4143-9402-8334743d0c60.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e53ac3284ed13afc37b73e038519c0bb7217f687cb98d58f507f8c6b7c497c2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:41Z), 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/FRZ110100682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc89bbadfeb485b63c8a60b64c7e6ea058e83c8c10405f3701ffce4d30dc30fa. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FRZ110100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2b0bbbb12fe8199b0664537e7bca375a79bdcf0fb9bf3b2b05852731354d86. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRZ110100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bf1bea6ee4a3dfcbaeee19f63043decd21507a420392e3ce9c37ed8c8dc71b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRZ110100685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691eded8b8af10f9c52f41a79fc43c5e2ecb7f8a27041ee3a06499828666795f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRZ110100688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16705aa666f424acd941a5452c6ad1da328e34f09f7afccc2976b2fc2b20d13d. 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/FRZ110100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047d4688068a2a7c029d7372a5a6f91f7c86a20ad47ef5f8e9f5d8e9f0a47784. 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/FRZ110100691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fea1cf249d9301530297448b6326c1408535e6b2545aac6283b82e22910c2a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:13:29Z), 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/FRQ040400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382dd2e2f85295a434cc4d13606ab820fc745a8996b927ed765cfb5700b03a83. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRQ040400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fe9ce0e8f2685b8d048616841e19c195a843b258aa9f1f050be7d948f847b3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRQ040400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deb87b6d43afe78c0e1c9be57c3a4874877350cca1b2ef02105b34be5de99f7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR3T51300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf273ef537ff13100832b64a1a5196a528c0488019d09fef6d466a3df901800aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR3T51500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d749d5b852a7f422544203ee4db68e1bd1dd9476a2e846c16b97c36a6453856. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR3T52000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2abfea6ea4d4fb09bf346ee9728ac154bcf349f026afd85bb3b3676d08b929. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR3T52000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efea7319671f2040ac154350bf187fcd3e0982c7cad111ae97fa17a8fa73e04. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR3T52000007.
Que tremblent les feuilles mortes (remix)