The Juuku () is a river in Jeti-Ögüz District of Issyk-Kul Region of Kyrgyzstan. It rises on north slopes of Teskey Ala-Too Range and flows into lake Issyk-Kul near Saruu. The length of the river is
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 0x8b5b3af5f992291523264c62380be4ce72ca93f37f46e6a2caa17258f5c68212. 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/0cf8b866-137c-4020-8d77-2d5584e90779.json and https://artists.proofprofile.net/proofs/artist/0cf8b866-137c-4020-8d77-2d5584e90779.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 0x6f7d058e948a79c7e378922800eeda05ee18107806b998d1eb60005a3b5eeb6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ8QY2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fcc8cf0caa5d8f860b2a77d2dba8e673b45a3d2b0a1640b1e0ab37d4ba4f2a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMUY42000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffbf6d7f3b31259dafc131ce27d4ad1de646b0c9b3417d52b143dd6304bdea4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZJRC2235820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2319910280c84258e908a1f8758b5a08e339a00c053d28e0b709bcebbf7bc4b7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZFP52381959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffbf6d7f3b31259dafc131ce27d4ad1de646b0c9b3417d52b143dd6304bdea4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZJRC2235820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffbf6d7f3b31259dafc131ce27d4ad1de646b0c9b3417d52b143dd6304bdea4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZJRC2235820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf378fefb380d6d3952f2949154ae45dd43a071098f6c6960fdd9700cd1921890. 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/FR96X2448150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c439d3fb0b31bd60312599bf5fd657121004016288eede4075773b9df58402. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLRD52023074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c439d3fb0b31bd60312599bf5fd657121004016288eede4075773b9df58402. 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/NLRD52023074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fc330e30d3d5c62ff5232ddb9c8a95bd9cf7dbfff36df57cc7ee6844e9f44d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAT22002229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0560d08757d46f4c1770917943d39eff841b6c136a7f6e6ea8e56e4726a0a440. 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/USDM32351203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b623af3f1a897f1c38d5096c9dbc7ec9fb7012d38c520237f0c7e1dd811fc80. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN62462068.
Lost In Dreams: 2022 Festival Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ec7256850b50a36220bb731c2f7d003f0774ccb091aa29dd47a23f9ccf11b2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/CA5KR2282663.
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