Marylou Vanina Mayniel (born 23 April 1993), better known by her stage name Oklou (pronounced "Okay Lou"; ), is a French musician from Poitiers. Her debut mixtape Galore was released in 2020, which wa
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 0xef9c0eee1f89fd41d99fbfdda955b49b05a8d5dfbf8e9cd9281511d952cd1950. 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/eceae1ff-44e0-4d68-8c3a-41ae8a1ff348.json and https://artists.proofprofile.net/proofs/artist/eceae1ff-44e0-4d68-8c3a-41ae8a1ff348.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 0x17940aa7c1beada5cb13b3a837641d1dc4f86802dcfffef3fd80430a0c8ab443. 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/GBAHT2001116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5834f87608976ec61d538dbb0aff5008def511079a416e35e51aa6cd2808c. 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/FR6P12100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5394c48182f5271f0bccf45919ab259f30410c52c8649cfac7fc34ab37cb99. 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/FR6P12100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9b7ad4b7a78e1f2960fa669fb099d4733b4dfd503c623bfae87f60ba7e056b. 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/DEG932500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cfa6488081c0707ba95847fa03677a8cdaa09a61d68fbb3b13ce457992aaec. 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/AUFF02200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b0108a6c99f3b3723bb2cb8b31ff577e4987b9a6b3d6884aefebd7de59ce60. 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/FRPB21700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda6233c0a5514f93f6d3f62bcb4fab8db34cead317fdc582cf1b6d8f9c08414. 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/SE5AJ2101353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32293a4b4c907619e24b439fa20249746390c5454f3676ee829cee6085e25ae. 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/FR9NG2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9a1dc09443f26cb12479b32ee10c7408d0c1fd3d6b8ca67374d01d17db828f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR9NG1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a7beb5655e83f8724c7802301020846ea18a3e0bc069495e192b324ab02316. 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/AUFF02200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda6233c0a5514f93f6d3f62bcb4fab8db34cead317fdc582cf1b6d8f9c08414. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE5AJ2101353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cfc6444d70b6603a9ba43e7b54b64bf49e54af352bfe3debad935066c58efd. 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/QMBZ92099305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a91319d186d1e688ad7f3ed5fbc73f23000eee37397f6789a97f34888a3c9fe. 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/QZES52173206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8025d56db698d384fcbc8110afe1d12c46557c485b5c849fa5c00a70d7bfc. 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/FR10S1828098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e1ceb3b661938555c7ed05ef44d0252793737465354eba34cc4b4832226c6d. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USA2P2140907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63de72d2d5b2379e3385da7668404ca5c6b5a61c981748b022e44bc38e6e4de. 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/USA2P2211574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574270bbc1bba1e696d4b0da4f5fb3dfd22ea96be663f84b69bbe449eb15dc48. 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/USA2P2214190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e1ceb3b661938555c7ed05ef44d0252793737465354eba34cc4b4832226c6d. 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/USA2P2140907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63de72d2d5b2379e3385da7668404ca5c6b5a61c981748b022e44bc38e6e4de. 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/USA2P2211574.