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 0x9d9c4d675b771ee680df6fb1d0359d501d336abd24d8183663e6ea814b98621c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e80d472-30f9-434c-8f70-a2aada8d61f4.json and https://artists.proofprofile.net/proofs/artist/2e80d472-30f9-434c-8f70-a2aada8d61f4.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 0xca4504963643b1511f96e1e1330ebb28bf484cb772a95f3256ac8f6bac99b645. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/RUA741017601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53925b5f5e42cd7b31aef6833c4199ecd4f6a572cf95a7d3d5137801245bdcc0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/RUA741017703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcc8599f23bf9de1241d96f67ffdfe144652e8193d10327684b017d471bef3d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:00Z), 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/RUA741017602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb476dcf9a141650eb148d8d28c8fe71a5a9a471463ba8e03a98a6e4ac2a505a. 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/RUA741017603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e82d0a409990caedb0ff4506b1b2cab0ceaedb51a20e0593141fabe061eddc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA741017705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed426b401720053f38085c112e95c0b06b8b81dcbb86060f1dc8492c4336d7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA741017608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572e646cf83f1a4f1d2b164c914d7597367ffc9ca9f513b8c899b4b44724e8dd. 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/RUB241219905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74f70dbaf9905db0dfe2af34412b0228da0bbc533f7cc0afcf087a98101d28a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/RUB241219907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3fc442c3eeff62c87824ab0c81625267e442e710eaefd639602b3e0f2e6639. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/RUAGV2500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb0e23e8755006a85d2c65adaa683dd5a9919a76a88be211f5c9077c08cd1e4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/RUAGV2500635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9941ccbed9fb13d64acecca1237fd82eda871c1498484b1e553d1c79019a61b. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/RUAGV2500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dc920c5ac4c14195085328a108b8f1107e359c19d498e5242de0f94fc05381. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUAGV2500640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386bd4698da91efaafdf6ed48852bd10dd987dc5977857f8d6c14216199bbd54. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUB311503001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa79448155bf4d2706b49f18491b9c166a25cd61c46f7f9b99d78dfe9e35961. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUB311702205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc28deef56e647217049d3c4d1197e636c9008db4a14789cf68325ef0d2603d. 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/RUB311702206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8de841903dab3eccf59604084e316b32725139198edce5b00656cd880476de. 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/RUB312009301.
Кипелов (feat. Симфонический оркестр) [Live в Crocus City Hall, Москва, 13/03/2020]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402da98bae917c2f27f619d3cbac95e9f013b797a35e0dfab762983a83a476a7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ZZOPM2110324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fab50a4c85d7d144ce298765542036c5bb3873e53ccc393e40bca61b4a630ab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZZOPM2110325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b677a5c38c13197a56418248dd11544967353ce173ce7a742378351537072d. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/ZZOPM2221756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39fb9e55d8971b95648d7367a32c7c5bd9c80740f512bcb181953be7cbcc3bf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUS182400038.