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 0x96ca17b6fbec2c48282268d0e1fa995284434dde5511f090ccf009dd5d156fce. 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/f4f0e1d8-35f5-4448-b87c-21b99cc6edb0.json and https://artists.proofprofile.net/proofs/artist/f4f0e1d8-35f5-4448-b87c-21b99cc6edb0.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 0xaad0225742fd204fdb158343b1aabc098b8aed829303731ca726f06c698b34b0. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/RUA322201403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e20789d85790e1430dad5906e537369338e47c27db366d123eb32e208e1d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA322201404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dbb2088668527af2dd060c395383f100a1a9c602d410a66d78262e1b8be43c. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBKQU2288653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef2bbd075dc95eb0c9a99dba68ae9de88ed326e462646ff4922d522d351ed0. 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/GBKQU2288654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00913b0c645d06b1eb211b2d01702ed8b23935ed084852df057047575112c86. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM7282367888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25e656916fb394ab2d9933e6ce88304e86d94639e142de1b62a4dc0179dcee. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM7282367889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60b918d45b431777fb6a67822327572a17d5129375c13a16ee4b7b5b3ee19b0. 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/QM7282367884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef837787232ce37e957438443e3f9277079f25b25658b25bb1f3f374dda81bb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM7282367886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f026a7b8aedb9d3c89acace2a89562c59716e303bac454bcf0b6b88afdc0a7. 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/QM7282367882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4087fec7e7d4c2b6661299b089c70e146bbb816e22c2b7ab4678468e66f3784c. 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/RUAGT2337851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb481a77ded8b9f17226061a310ef60a58658a51d28f6896c878fc1807f10d530. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUA1D2425984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a8b87b13b05998d860d1a8bfbe3a066a4a9c53d4221f525ef0f0eb64da3503. 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/RUAGT2407531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44091d04c263770f47dbf0f95631e96dfa949c017bd55d7f9fe5890216f9a130. 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/RUAGT2411426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5950195ac51e5f32f62b385820ea9769707abeb2362bbc06578ab5adddc73cd. 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/RUAGT2411427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a8b87b13b05998d860d1a8bfbe3a066a4a9c53d4221f525ef0f0eb64da3503. 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/RUAGT2407531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb88b7ad223741e933a20c4db068ec98eef59481c8abc2825227123e13cf9f48. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/RUAGT2411428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ff9605f8acc5fbdc5bde914a909eb723f42122dd977d83418d6db81fa32b2e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/RUAGT2411429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc657612f3a93cfa6949f7d218ad5e338b0d876ecf4f3854ac6631fdff979451. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/RUAH62402284.
KINO (LAB Live с Антоном Беляевым) - Director's cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dabfa606056c70883ce27b3e97fd05d448cf2a5786e8186e0feaead6b9a9d5. 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/FR2X42504962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afceb478e74640815ace20b10e810375ca44e822b96cdc2387186c23530c25d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/RUAGT2508013.