Flex or FLEX may refer to: Computing Apache Flex, formerly Adobe Flex, technologies for developing rich internet applications Flex (language), developed by Alan Kay FLEX (operating system), a sing
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 0x70bf645cd119939fe26507f09c2d7c2641e4c46b7d14a8572faf5b166283e4f5. 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/51d6371c-cbda-45b4-88da-bb1fa01d25ca.json and https://artists.proofprofile.net/proofs/artist/51d6371c-cbda-45b4-88da-bb1fa01d25ca.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 0x2992e44b3dd3f117a31a1920ad80dded96dc27641b3a956830fd5a58f8450d78. 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/GBSMU8740669.
Death Bed (Coffee in your Head) [Lofi Mix]
LoFi Remixes + LoFi Edits of Popular Songs... vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77aa0bfa6a6ad33eb66c5cc5cd6a3fe14dc31c9743d37be2564f99344b6c4015. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/GBSMU8740713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28749862b6febc548f43e82e27cf5d3003b6533b7ec5d110e19ed631a06e8036. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBSMU8357869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe462d1e24d35c2f63944e35430fe691f714cb1282419d7ff4b82a81cd547d461. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GX89G2214658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c8eddc0f2442d344227b8c15e617959dea9d9b855a779e7703be38bfcbc3b2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX89G2266063.
I Can See You (Taylor's Version) lofi mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1710c4ba9ffe62baab561032cabea16b8948433c9ab8d790f827e58d1d8036. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GX3HH2361765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cce49922e7cb91d6dc7831171a8b3fa594f44d419218e54b55cd38f0bc1b62. 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/GX3HH2370086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054879bb5c319279d752411c185816d5367bd0b5ffd3bdf1e694c19199015a5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMANG2228721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294af87d4eaf7087fd28e25a995141de8f09c483606790c28038920460d07a92. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMANG2222572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0fbd86d69554d2c7e851b3e3653275f7e3c2f0517704dafef637f7925fa54. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/US3DF2461937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b89eec7266a301815b1c96deee4fd4f023801cf2544cc2d8615fc131bb6527. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3DF2467700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24dfb250fe9d3015185371fe34d0ef36953a4540b806139b9dd70adc0833cfd. 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/USANG2461203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a97824a224f7f8359320a349d6b276e5762b05940e53255f6e0ba07d2ca215. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USANG2470609.
Josh Tillman and the Accidental Dose (lofi mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e9add1cbddb08840609f87b27a73b44ab804f51f1030407eddbc9f41c227e7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM3DF2404136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367fb63f6735ba9ce52c43c8c7fac1fff347227dc917ea828694e94ac3781de4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QM3DF2404137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e273c46d3ebb14caf85536f2a1f396843d40e593c99392541de94fb1fd816a3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM3DF2404138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3a7aa95361ac3a3920781f7cff400e6a995218afbc1d93522f807f442723d3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QM3DF2404141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9f93b366ae601c406dffa1c7290d2e95ef1d98b6994b84dfc4b3a574de6821. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QM3DF2414366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fd9acc45a6c032bd806496c3b57fa05c2a5fc5a4b0a2cf011c5e47b4cc63a9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM3DF2411745.
Beautiful That Way (from The Last Showgirl) [lofi]
Beautiful That Way (from The Last Showgirl) - lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355d5b4c865902faadd96ecd2d98077b5f9c4a4ff979bf7d3d3306c492f09ad2. 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/QM3DF2417592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3899b955a3f40110d1be84ca7c549ba6a6a8a6be0e6042c23a49b1a40c2523ed. 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/US3DF2504862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aeb5736fd41397af9b50458f12444f627044bc012d3bb8b9fa536476580784. 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/US3DF2503765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacf6add8d524eb2b4e93710177d5dc60a7a93ec05a5e367baa37f5b4a352006. 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/US3DF2505150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5b8ae98795efa8308ef74845fbb1fba523749eec4a4b9d9bea663508109378. 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/US3DF2514190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4b63c498bc610c25573b0752249385212e575e76a882718af76c4905b355a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/US3DF2521060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f56da2e16c418165410350d3697e31c9232ec24735381e722ab2d72c096ebeb. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/US3DF2521059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb39cf73f96330c8f21b53d58a8eabde589b4cd3fb908bf7fa433d7c20b4f36. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/US3DF2534352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7653cdba1d1f7b509f2546881fae6848cbe58db5e3e153ce860a6ad6bb1d65. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/US3DF2544680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22405a0fecd77e403cf809b8afdb784fe8c8428373f89adec59e8b1efe59b83a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/US3DF2573268.
Just Keep Watching (from "F1 The Movie") [lofi]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01468bf1c1a52903bdeaa26ef2a857dd7e87106141cfb2b5355f11eeb6d73185. 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/US3DF2573272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cff300709502b2ba818ae02b66e363217f0d3e891fec8fe205782d41211715. 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/US3DF2594154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b05534450cf88131e1f53992758b0842023cde0cc4c9e4f75e4b691415557d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USANG2505284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4635ce6f120d71bbe631db53677597b408a373d48eec74bea5fb875293452861. 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/USANG2517738.