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 0x49e909a15a9ebc138ae05a769ddd4f0514349be54c1604680bd15b628cca9b02. 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/dc22c176-992b-4c95-956c-edc763cf4c6f.json and https://artists.proofprofile.net/proofs/artist/dc22c176-992b-4c95-956c-edc763cf4c6f.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 0x928c089557f2279e5219c6019460cc5b3c1d8b0fd30dbfa3319fbe85e844b42e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USA560843553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e8ce982f30a58f408867445b3799c6a80c7f981d059b6298c04f26eb0caf6a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USA560843555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2480ade2d57fbb0f8bad152e0d11b67915e6f57308326e90a2f0bd42ee2527. 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/USA560843557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ad8b2ad8a9fe3efc75512c4800e964d089e6803040b0e41b53b97c4c5a1a0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QMPU51211367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8511339587a40a0506c0ed53bfcccc8d94375fcbd934b48207d3f3783a69ee9. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMPU51205935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589e38ec556f8330d733e692a87593ff036c485377c93b5e2938367ee652d88f. 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/QMPU51205996.
Девочка из лета (концерт в "Крокус Сити Холл")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dec037b15d795c7bebe3bc0ae1a6e5267ab3fe7809856b16bdf736be95cbfb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QMPU51500825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621ccb1d585e3d306f2931499b1ff41e4d7f72557fb924fb35a4b597652e29e. 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/QMPU51500817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8270472bbb520d7c3b8a204a640ed51379262caf8f4a1eb537d87739c5a0f744. 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/QMPU51500803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afee3c3a1f143b55c7ae011647212e49816bbc16d9cb6b91d056a98716b87e8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMPU51500814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112fcbe0354e131a9472975a4b0895819fceecfb3331b2864161bace22416e6f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QMPU51500813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a1bfd8972e92d53bb396309133364e847eff2cd34ce97703580d50bd96a574. 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/QMPU51630476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1235144e8d0189a73d402fa2c1dda9e9f4f61ba6ba2a934ed0c8d0a2cf2c8c2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QMBZ91687906.
Концерт в Государственном Кремлевском дворце (Live)
Концерт в Государственном Кремлёвском Дворце
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051858d6ccb8c694f2d853d39b6b6e7c2318c19fca48545d3ec17f876511dc61. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUA741818004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa4661f2440099ccadadd0427338eee3c4fc0ddb3b8a341c421a83ac09c902. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/RUA742110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4596ddd767281b097ae0f31ff2ca307a3e10a6709fa8e9abe9e21777c453c673. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/RUA742401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2b3641171ff7a95e0f1ac2ad25114513d12caf58b27d824e5d0b57967952e3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUA742408313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7371010eb3e329582f41057415a294e82c8446c66435c4581405a9ae0429ed. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/RUA742423202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4ca8ad4c1521aa356b84fa0e39c414f6ccfc86101e50e84719c6e4f032c4eb. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/RUA742423203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28723bb841e7b7f47bb7451a68f8691d44125b2234d4f9b35fbe446442e0e793. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA742423205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b0f9fe780e2271055d20de1251a705cdca650c24a99007537f444cd9ddef1b. 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/RUA742423206.