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 0xe6d97283c7f424b389ca73a52f5b1eb4b4db366f94791369ec0601730921339c. 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/4e0f9bfc-41d7-42b7-ba5d-34b15ae964e8.json and https://artists.proofprofile.net/proofs/artist/4e0f9bfc-41d7-42b7-ba5d-34b15ae964e8.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 0xcd414603dd592ce5b4b0197ece43243a8a39dfda64127b6a01e4782749698441. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839dc64f12b240ea303387dfd42c1722d558d0ff8ed634c947ac8bdb55499d02. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b62906332375587206b99317741f59c9044e2320e8a5f07382d4bae71e8b6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7588679144dd0a93b59c2f4722909080bed6d5592ba3ca8285e93d1b7d46cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1b2ccd77d185e298a0f538157b9bc8929e2ebeaf2c56b6e294ca1795f6cbf7. 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/RUAGT2203442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe664ac236ff5e5d71d161593d9fbd90c397d50609078701d2c65ae6c2f481e64. 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/RUAGT2203443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a78520848e4a292fb82ea3f64ca832a407fb08b5a850adda3631e746315ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d6f4d2a7e736be75bdbd9446d919ed15aabb0732c4013e0ec45957b44d4d47. 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/RUAGT2203445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ce70ad8d2a914eee49e36be3cf54156a9498c67a7f0f469c22e17da447e991. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb8b4ec714b522765543b61d1d7721c4f6075c5e419cca5e66273d173a06fd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2203447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb0cf9f546bc6ea443e12ebedec29f78ba9f6cc686c1fa210fdb5f8799a8c3a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/RUAGT2203448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3048fd28c90f0e2bd1dbe4711e4a3d780216cbca60b457e26e2643172e1beba. 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/RUAGT2203449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd9ab6b92acbe940d19af6bf56da2833f6da24d27faf35a3a8691fbcd9d024. 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/RUAGT2351347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f083791d57ecf52904759025471e24d11da360c6955cd3d1983d1d6372af657. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2336882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f8e2bafe19b8ddbecb284c8786d30b7413da1de3ab2f5ddf9e4d122220ec1f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2306212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87d0e92710d69cab53449b5e541d3352bf2ded05841a90afa9ae09830cbc9c0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUAGT2306213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbe19783796ecf627d571d730b16654214208c47c036bcaf8f15f57bd0ed4a0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2387569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15032de002435e08ed9f4f1e54011c3effd0523b6d6a75858edc9fc6240471f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2387570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded8e49029837a3a7ea848eb6f1ea56bd6b05a1e2ddf84a5ca013117cd1dbb63. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2387571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb068f0dae98e423950c2da142dd9333e5981c9b4755384d719a829320f5bbbf5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2369657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d42f216a5964f69b34a35fddb0fb1e3535cf49225c15fd6dfa0b025de0fd9ff. 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/RUA1D2369658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3fb2286eeb5d40acd28c25491e5eae5dc96721595654ebdb396968cdb88f00. 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/RUA1D2333112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064abe27029d162abda586d65a857f2ea26180196aa2c8a4f9bcb2b88487612c. 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/RUA1D2315201.
Собирай по частицам (Prod. by Tornado Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b25a7c720dd5e0b94a38c9cba2ce2a2dd13a6a289d4c8e322868015692a107. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2237372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6cbe336d67335f033aaa50153687e3e68b17c37f7d9afe33cd0f5d88888feb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2227282.
Наивны и молоды (Prod. by Tornado Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a75c52611e67c99a79164b45be3411e5bcea467603d1432e22b0b325bfcef33. 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/RUA1D2211136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e04ded134cbd637491b2be747f7dcdbf176088cf148e5121cdb1808d1c3a56. 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/RUA1D2200786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a211a032c35a1484b93305c90a2392d186517e4cf9ef81ea451818fd742f731. 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/RUA1D2172630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be3ebee527708bd1e9475a94cff5aa2e01bc23a43b4e029fd067378788fea71. 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/FRX872103232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d35af8f1827789cc5118d58c5d7e50daeed0fa9f10b2fd27c29a82785a2898. 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/FRX282186495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c91ea419a13158473c716af62724db48b170a95bf1c3c559cc2e651c15f4dd5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA1D2120737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a90d192606db5eca49877cf0986860e3d2ba939bdf2f5bde709d495dc9d4a6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR26V2053874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797944f40ab7b938a90b801d230bb6476741e51378c05eae0423dc3d36247b5c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX872073333.