Cleo may refer to: Entertainment and media Film and TV Cleo (2019 Belgian film), a drama Cleo (2019 German film), a drama Snowtime!, released as Cleo in the United Kingdom, a 2015 Canadian animate
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 0x01726a45edf08c2cbf4d12c7a283376803c308ff0a1094647f85854c0b357529. 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/a7529d1c-5715-499a-b35f-a16c806336a3.json and https://artists.proofprofile.net/proofs/artist/a7529d1c-5715-499a-b35f-a16c806336a3.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 0x8bb0ceb27d3ca82e07e619b4228e4a497dfb1e3d85183db7d24a5e6b21cbe226. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX9ZT2300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccfd71e0fd5add2e11af840baf43d167172e7d4d13b5c9bdb57507d81f3398c. 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/BX4RR1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaa2f434a65f529cb80bbedba3463ec5f5fab9ead3e3dfe17cbd40af0a5e092. 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/BXOPY2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dffa1d3b01defad43fa40526158eebb0a85cf766fde7504e3d0a267bd76e5b. 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/BX65T1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc63059761aab7156347dce8665decc2c1a42fb415deb178ab6105b671d7b11a. 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/FR7U60900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35335d4be8f27c35938029600a4120e39865d0d6c69d43958fa50aed272b6744. 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/BRA5Y2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe090e28db779bba8f5a3be47ae5ae2bfebd5e764a06201b623499217cb88ad18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BX9ZT2300292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7e954dab8cd2b2bdbcfe64a44747014da0eff6dd9bd3d3bb9fec931daa6ad1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BX9ZT2300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fec837b0c870b2271b44f3d0d5b212a058767061d7491b1c8fc49e6ac798de. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BX9ZT2300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0201632b5ace38601c63eb66e8626dfe907f277e36564a7a88cf5d185bb1c4. 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/BX9ZT2300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c292a8fa82c308a36bb845d3182547617ca40e4a5e128a692b92f0c1920cf5. 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/BX9ZT2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb0ceb27d3ca82e07e619b4228e4a497dfb1e3d85183db7d24a5e6b21cbe226. 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/BX9ZT2300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d4921a3742aed888bec4510575f4b485bc50a132024596764f1bac8b0bfea4. 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/BX9ZT2300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc16cec451f07e4edb02ec36359aefe1ba6bf36fb704de2ef84d62f0f545a9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGB502366653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a3b09ee9ad0dfeb776e67124efd447f5d3edef8edaca8bed2dc1f7697bd092. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:06:56Z), 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/BX9ZT2300297.
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 0x40db4e114a42c84b5696ece8321aafc09e16b9f5fda9d6d4486acf085a0384b8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BX65T2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded543caefca1ba415a92c7cfc5f6b2d3639a8dc608ca892d097a802b3e3de4d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXLVC2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9570cac953f505674018e6891a10a19a8e1cac31b419b5f578a1e8096b4da7c6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BX9ZT2300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997a41e1a429aa2b8ac16578054f07d6b3ea527e6e319103bd02bffb962703d3. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BX9ZT2300299.