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 0x746bdf1437b24bca17bfd4c11735737bbfd25b4d1913c44a3815ef2ace0d3bab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/196abd69-b552-46a6-b69e-588d1162b412.json and https://artists.proofprofile.net/proofs/artist/196abd69-b552-46a6-b69e-588d1162b412.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 0x690f50943a2333a4e9ba202cc656a9cbed9d9748e307f67cae91384d15f09c66. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES71G1718499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed63cabc61bb9ab44bd3441eb500ba484619f098d0246a71720b5455be588093. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ARY272200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71428d77e92f49c0c8e21ec0a77a28712525a3a4a3fb890372dae5d609fae64b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARY272200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd107b10984b333ae2186e91368b9cf0834d07c9337425b63c15a7916e8620d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARY272300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2704e511675b29f8cb0f7cd3d91ab7db612a92a51468fb711cec9a6c9164951. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARY272400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5f1ba61a17b8c005f310fa76f83eb1596f113d0d275fa0ca9dadb836e1dfc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARY272400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432f5df3e96e9d6826265c5c2417cda9fb2bb5620c7741f5f6bfebe13b3e33aa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARY272400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19459522e016cde74fe1121dc873c16148bb8921bcafb9e9630fc9b75b31418. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARY272400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3999d4c2b90db2c0852db79b40ba6cf242c97347af4d5130622873493466e325. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ARY272400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e179208d466a051f7c95bafc22c5a3f2132b4b1f5e20b882ec68f35c89cd07b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARY272400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca0ec3977c56da55eb0d09e72cb4c803fd2ec0ac55e989d0db89c0b455b0b8. 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/ARA492000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4140cfa77f53923e5164e9137e9e3ed4d5cbe2086260c34fc38b9642427a8870. 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/BC9CZ2300215.
Reserva Especial 30 Años (Vivo Luna Park)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc6b2856c0e5616e7dc3cb5e520cd4bdb5444365010704fb9a9fc37461065f5. 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/ARF471900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c1e5e63c784f25ecaefaa08a5baea6ff7577235486142032bbcc7f4eaab77. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF471900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c96bf5859a09020690f14481f82eb7bf1f7d1dc00aa4928137b0ff0e587f0. 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/ARF472400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009b83fb0b218cc22405f139e85beaae9f8c235927cf6a2b271449ba0cd47bd0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARD791700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e0299b79c647ecc99db8a5de9646806be9db001bcead2b85ac21bd9166cd57. 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/UYM121103052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2157b7f738720a7c553a1a9a785c7928a3b1ea887794e155d9c8790155c5a8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF102400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13103967c9cad89988e8bdefc9e4b65c9d93bbee9acf148294b5cc1fec55abc9. 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/ARY4P2100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057d4d852330c3c1862dad60f3199477a47b540c5b096ae6a8f2fbddbc7899f4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARA492000121.
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