Slift (stylised as SLIFT) is a French rock band from Toulouse. The band consists of brothers Jean (guitar, vocals, synthesizers) and Rémi Fossat (bass), and their high school friend Canek Flores (drum
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 0xdc9f7db97958cae87568a5963dd5839ac71bcfc0e2b08af356eb452393016214. 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/e6b1687b-0d9e-4d21-aeae-04aadfa0dfae.json and https://artists.proofprofile.net/proofs/artist/e6b1687b-0d9e-4d21-aeae-04aadfa0dfae.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 0x7baf7337a69fb40b493a3e42a7cca17217b42528c1036c96825a4a24f034195d. 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/FR5R00906890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a7c642cae6fb862f4ba9fb0c9babf365d3d9efff997dfb2244b3193af9e335. 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/FR5R00906891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0c09bd333e4e08d191e73620fdd93eed2fcb0aae8a0576ed6a711a3d1cdf9. 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/FR5R00906892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f157142d103c18c1c4d29ad0e14bc440042acfd7b67d8d6151f8f995fe5319. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BEDC21800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada88b0c2b0bea39683fd276c1bdd74e1a0c6b099ba3467510c3409179917596. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BEDC21800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af3c3c04127fc02437f427251c4cc263f01a17c683a06fc05b9e429fbb439f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/BEDC21800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8475ea59a905a5e79e454f91bdad2e599a741b4eb64f7eb15a1d0c6dcee7cee3. 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/FRQ031915702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4626401e66a5a45ab5cc0f8fc2dd220e538c2072491613d51695a09848f79755. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRQ031915704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd80bd8757a07698b2ae95142a16420f05b1ecd2433fb20d5aac1242cd9be6f1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRQ031915705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f131f43114dad8fd58a7621d4ae28927141997c4fe3ae57e0d20b4e00f8165. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FRQ031915706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1949cac7aa209160a41f92a9a668c75178a59972a89f0f6ba0705038cef1be6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FRQ031915709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c6dade40396b7114446c41087d894a50bfd373a4ae59b3655ea654b024f410. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FRQ031915701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8475ea59a905a5e79e454f91bdad2e599a741b4eb64f7eb15a1d0c6dcee7cee3. 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/FRQ031915702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f131f43114dad8fd58a7621d4ae28927141997c4fe3ae57e0d20b4e00f8165. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRQ031915706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cc0ec847899caf4f8bc877a105856aaefe57e472692bb8b2f2fb4d614ce37b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRQ031915711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571951fd542c18c58ce915939fdcbddb61415b440612819605d997fe5725e122. 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/QM7282153988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927fc91d79528bf9c72dae1d5ad50122b74f365a0a8aa399d96aecbd3cc1e5b0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM7282153989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2cda5f24f535abf7cc5e9d92c9d8029fbf0c2f1d00e1555f614d109e65084b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM7282153990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb3840725fdd341f0eb8e3ea42ad26949126aa1342e7add13be3f3ec67dd465. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QM7282153991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d386fc64acfa7afa718df0659f5a8cb81f2e7c7eb747ef65a433477d857d76. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QM7282153992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba90951c20a4c19313c287bb9fc166a43e9ac6046571a8e544fc39801093a48. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7282153993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890ed2245db22f7ac2a8444b63e3271f22df2c23c6e51b94e134aa37efa9219. 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/QM7282153994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8490388db1d460b82817a34c6c89a871683bf554ad01f401fe2f5b270e4f9ad. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QM7282153995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73747e3a8b17976219da3b5c33c89133e0e329c8c4391594117878dfb30934e5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR9W12334028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232157cd7838a487b735cc2633ad1660c3ee24a71ebe986dc9da83164d07454c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FR9W12334029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a62d3340f550415916401451a7263e9337b5b7a4f5c9d50672c10e0fa57625b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR9W12334030.