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 0x5a807a01791a8dbf2b94a00bd1575510c9a8ac3706f05363b946b869384870a5. 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/27bd7db1-f85e-4847-9efd-99b17a16b8fa.json and https://artists.proofprofile.net/proofs/artist/27bd7db1-f85e-4847-9efd-99b17a16b8fa.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 0x7bceb923058e2222bf4099e819371823a621ddad427241d67bd0aca7931a870a. 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/BXG6R2301093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83442d919974551e13c756488e1921c6b733df97b6e7e008f5cf20122d79621b. 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/BXG6R2400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e2a568844d83f3015746b54f71ec736d2c2be7a9c93725be4f5101c051e5ec. 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/BX7P32300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e59d751b6e887c9cb46a0bb961073a15cc964f93e0ab22bf6c91f74d147ab8d. 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/BX7P32300627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b377645a8787c00489f8f63aa4f778467b54092e2614861a2298c0877dd58c. 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/BX7P32300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aadb160feedda52f3edd8a63236d1bfd2c76c6286b368f5d063084183f1da88. 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/BX7P32300678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6247bf85006633e7918bce25da62113ef771aacca393410c8b7ce74f034e0b1a. 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/BX7P32300664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af598c4b9b99d78b75c22b4a5f5832f55e6f5c30930668683e7616aac229c21. 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/BX7P32300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf9c3800076205e609f480051de46cdbb0838583c31ee9f3b4b0fc85149450c. 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/BX7P32300621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a9a7837980de65e18662874ede0fa7dd1effac9b7dcde600aa37291d84ae81. 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/BX7P32300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9178327d2710577b8dea4e3953d01a4115d94389374ce19fbe9cf6c8e6240425. 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/BX7P32300677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e7471e8d6ecfd36a4f59bd97bb58c5df7c7f1e201f3d574f586f63e4ca7a38. 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/BX7P32300666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d6445894abc8cba47a1b6772f40f0599137b9ad65f03d5dc97c7f68395550. 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/BX7P32300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963a9211d6c2f11df7f05e7e7f9db05e5d0a2cb9594fd02323640cd8d30d03b5. 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/BX7P32300559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0673bb4065799605538d2a425f639761470ec479a2dde51b12d54f2e8741a3. 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/BX7P32300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d2a23af7ba5142fa4bca56b33a0fec258dbc154aee3683ad90931d986cfe4f. 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/BX7P32300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094045e238c042bbb5a348d6f004a0c624aa04aa1792dec231f208268fa07a5e. 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/BX7P32300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba708cd49b19def7cfdf4ec539337761cfc56aad5cf808942a36012ec5ea787. 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/BX7P32200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25891e874c33a399158429659abe73d1c1697ebf0dbedacbfdb4ba6789c0b876. 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/BX7P32200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa01969af897372539406da14f2f8f949ae4782d85fac133777193bc4a95cab. 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/BX7P32200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003b755be24b7a0af091abb1ec4a937157ff9d9f48e03e5a532c55da35064afb. 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/BX7P32200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3da6bb78044e38b27da3d6eb20735bc69b8990288efefd424521743e30315b9. 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/BX7P32200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c36ba473f0790443a217c74b76603c702fe612de52faa7bef6a202ef9e2f961. 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/BXG6R2300792.
Let's Go 3 (feat. MC Marks, Mc Don Juan, MC PH, Mc Luki, Mc Paiva ZS, MC GP & Makalo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31766dbd7a80acb82ed9528fba8f4678aa8c897d30c63c47cf291fd35734ee01. 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/BXG6R2200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a886ad6bff11a3f07e658e8344ebe83c891ba23ac76de9241f60010259a707. 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/BXKG22301291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25db2494537b85c51f9e06341f5bd7957c82095ae79513a66b5412385f605e2. 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/BXZYA2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0f96864bfdf47a591222b130e329031334a97d6ab84f24f4330ceae1cb36d9. 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/BRUM72301859.