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 0xc63c0b2fcb81ebf7ad098b9b765bad05add285bf804410c010800ea900dce104. 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/f11907f8-5ed2-4d64-9005-736bca340915.json and https://artists.proofprofile.net/proofs/artist/f11907f8-5ed2-4d64-9005-736bca340915.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 0x1e47c7f9aede91b750fbb894ee6ba2d0e029d6edbea164d6b1c6afffd8961582. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542200771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca57f3f4de3ece70bed5a70fe06b822a8255c8272ab092f607ec5e67826a3f5. 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/FR2X42112160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad376dbc48001366d40045d02dbaab437c4084b204d163d0d65e310317d16569. 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/QM4TX2236937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ea38b354e37a5303fbbd700270acef5032617590aa990242c0bbe3009c8fb2. 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/IT0312300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b8e68553e6d7dad0ed8e196d967d396404679639196422108cc14e4d7d1372. 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/GB8KE2214296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd3954e75554226273d4227e6980a5e194fac1b781284a7463b91da0645b7e1. 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/QM4TW2426656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be459fea80d4dbcb8d55447a5ed7ed94acbf9ae2d23ead9a5a1073e98095e8. 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/USUS12400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe5e611751f5fd6ca0deebe57251b6a68cef8674859971bae486eb3c3465a47. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBJAJ2500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb3d8ee6baac48e345bfcdeb19a2fc143b3a671b3eb1c1c54c874f50c48166d. 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/GBJAJ2500227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5633f112941769cc0ecdc4545b817fb0eeaf97862cf483c756efdfdd42f49181. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUS12400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5ce41b52691c9a7ebae06688f8d84d288fa41c7129c3c519036c08459d950c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA72485554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b890a8957e9baa5f249cfd3e77eee7c56818259e64b6a985f1678efda93ad3. 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/US38Y2419467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698360633ad3f0384b6da125f5657dbf9f0f054af49dbb09b15a3b77bc31397. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM7282435666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226e50ef560a70c58cfdd95c409aaa3e3fbd231e3d695dcb5014783375573a2. 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/QMFME2397493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b7c9857c822eac484dbdbd4c49572723a95e36750f25ee4eb325d20ceb7b6d. 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/GBJAJ2300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6a735709620b76644572f77f2744af9d7cae0688bca62867ef18029e23e25f. 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/QM4TW2334677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407d415fe3b36885dc0afb148c5234dbee8cc053653a4ce917797d8479800876. 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/GBJAJ2201213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e47d8da1079b8f1733f698c13bb3829c397ae1796ea79801a8d47f7d9b92e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBARL2201597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4bc565f43c296075476e39d429e8cdf5f546df4aef5a44935fe224a49cd3a3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DES232200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277531311d7a551cce2af42592a30787b54cdf8958557a61aebe5d990c7e6eb0. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DES232200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9021df082f0d183351f7e5245cb9e7f7fb3b59ce59970f8963f4a385d9690e. 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/NLF712105686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aa0ea5e53a944ec4cf9faf25837620766bb17643ccf51ca733b5573b00ddc6. 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/GBAHT2000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cc8a024c117138757b59702b49813caf47e667d2a3861bc42cb4abb6838956. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAHT2000240.
Crank It (feat. Nadia Rose) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf199238a55b58637475497db7d4ff0ff716fc4ebb3193f87fbc2fb54e436432. 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/GBCEN1602579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5566464ab0883fd064882c63eeddf6c600219d26c0441e4f7987fec5dcf1b8c3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCEN1700249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa8a0a2eda939c7e7c5d0f27a5dbf4f8cb5506144cb5afa89aebf732444cac8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R1909731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf053886bbec889bc546aa65f56515d58cf6f9dc02f347a38f88e6ebae4d46f70. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBUM71702608.