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 0x9e49e4ea5fb3785a41f92039feb755478817c82c95bdae1c62b3f2d3b4633bbf. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/751fd3d9-4546-4287-a1be-d1462a3a9de1.json and https://artists.proofprofile.net/proofs/artist/751fd3d9-4546-4287-a1be-d1462a3a9de1.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 0x9b030d37e6331d8465a9a956296cf19af38ae27c526d34a7490de2a20c4f7f06. 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/RUB421900939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9fac176357a328c1250c99f2b1e839b835f894ab079ffd2a9a7661bea1dd3d. 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/QZGLS2036825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec02b8636b043a46b0c0a79a44bb7c59148951e706e1c5f49498d5a66f34d5c3. 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/RUACR2401428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c235d9923fd53591f6aab7befc8b73b5cfe7d0d5b8999df1f51c64c3f7b864b. 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/RUACR2300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59885e2d8c49fca33ab181e173adbad872e2ee6a983acf08e2e624eb1b87579. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/RUACR2200512.
Катим-катим со дворов (Moon Safari Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a2a602236e63ffb515c46f3cd7d5b83d1491db46dec475b8b10ebedfbb2fd5. 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/RUACR2100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde454648bb0899b3221db527fedb7c79fa09d86db56829cb5abad3852f4d0d6a. 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/RUACR2100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2e6a8ec564d0db57dca454f01e66d4a6434495d16cb1b5cf0ebd19edfea3c1. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/RUACR2100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70e27938118115cfea542f7dd251a46cfb9681920af75449f4db8b5632ef8a8. 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/RUACR2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d10100f7f90448f1416381e5c4505dcbcd5194599b8e4b564d6ae42d785efb. 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/RUACR2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8cfd32d1b32a1c66707e15fbdaf176afa75a9b6edf633042fbbff80a357f0. 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/RUACR2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24828075112838cb731e38580b98a00428a1c4df795357d38b5ceed5b783f0cc. 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/FRX202036930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb153d2a8cd6127730ca9ddba8763d250f32883c1d421a06c9f8e319f6e149. 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/FR96X2015210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf829e3fac9d16effa5d935b413e643b280cf4ed2221fc65e1ff29031db3e7. 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/FR96X1961834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd1e6f164fa6108a195d40573419b40dff2858b0e91f832b4ec1d950f173251. 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/FR96X1923229.