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 0x938046204cdfeae937465b1a1ad1be38423fbf69afa62c108c46c38dda19a58c. 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/12af6c78-d0de-4726-8b2d-68b671756a18.json and https://artists.proofprofile.net/proofs/artist/12af6c78-d0de-4726-8b2d-68b671756a18.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 0x3d5ed608faeb7f5e35e5e9e505e254886334199b2ba9f349c60aeaa669a51ef8. 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/USA2P1941447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10324817e7104f56213f3a91a06f168df7a9fd5a76500c16cbbdf866c67b80. 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/USA2P2012178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6ffa840df783e2f7e4bb3d3cef6ae0368b432d88ad2c28d7b58dff74e0458a. 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/USDXS2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ecda8d76189ea6b6746ee93da11d6887479aade879b61ebf2c14dfe1488087. 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/FRX452271823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e1e931f5fab7adebb94c978846312cebb0bb9d08be9eefee9652793c1bdf71. 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/QZDQH2255925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cba40716ba8603a3972ccf69fe93a7cb67633713023e0ce92a054a4e7ae529. 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/QZDQH2255929.
Recordando a Manuel en Cumbia (En Vivo 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c53159801bf14e13a0c70cb97276ea6d6efe9ecc592500285825dad20ccdf5. 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/BK4DA2413334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270a672a6be05d8de411e49fdfaf0f5e695415775a4608229be17ae9a864df4f. 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/BK4DA2413335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde95d876e74a0e8cea38537d68f9e8a0725789e672439e8ac0230d1cc6ee004d. 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/BK4DA2413336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f53621c40d0ba001f92f2aa96a972c7257bdc8a96a970a5168d5302942fa2. 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/BK4DA2413152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3696693307b0b4a9f3c78a0067fce08ec9094abff9407e5659ab53e25e69092. 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/BK4DA2413338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b4f8faef8e24583cc78c04721402ae038e2002c311da653a348c609fb60d0b. 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/BK4DA2413339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2af0dd6f35709cd528ae9d7eade7f3527e75d331c7aa44a46941eaf77a212b. 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/BK4DA2413340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eadbed91f5c58330f3c9d36698a6fe68bd7ba01d81436a9e5c93602c4b257d5. 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/BK4DA2413341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6de2fb790c8a72b807dab4f977b8788b31ac000dffe6b4a4cd1fc8f263b3ee. 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/BK4DA2413342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd310dc978a7072bb9f6a6db5800ab78bc8ab626ba963dbdad34a64965d4fe5d6. 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/BK4DA2413343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cf1da73c29e93c72576a4f5e43f4a55ccf17355d5a25a5c8f288b55d4fba90. 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/BK4DA2413344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090b90956f749820af3ff0345a31e4826cf9575b6c10d182ad9a418b16283ca2. 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/QZVR82200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb42fd90ae37215fa96b7646de5720270e3e78fe2c9e3e038b0ec738e86e4231. 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/QZVR82200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eadea2e5f2a13729c2f88b33f41a19bf103c931c1097397587bfcf31e5d767. 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/QZVR82200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33235b0500fd9acc5d569ff08f8f6c8acebd90a3fae69ff736f06b88313729f. 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/QZVR82200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2476510cdf27cdf5a1d0582a267f2f5957ce9d4fd94a5c9f329a26da4c79229. 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/QZVR82200026.
Jorge Santacruz Y Su Grupo Quinto Elemento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091d3b38abe2a2cb5096d3ce7cc69afc42cf3539ed7ce2154f21b782dd860e37. 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/QZVR82200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaff2bf5022d004916f35e6dd95bc5fa49d9673266b4ccaad5eb396193f6638. 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/QZVR82200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45668f10694d07b6f8668e3553e26d07241b81103bfaba083eca476c5e05b94. 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/QZVR82200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e413db201226d982a5806db6e42c4b72e78a523223faa2cc672d7f704302d46. 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/QZDQH2508287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c4c2cbf8a276f3a843507c94316fcddf3cd28eea098867629720a76c11edce. 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/QZDQH2503009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2e19820c90bf455ccbeb09ae224f5d2819a26ac035263c08d649651e68941. 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/QZDFP1848183.
Puras Pa Mojarse la Garganta (En Vivo Con Tololoche)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6a98deae313adb3994130e85f26a6b3f9bfb968ada6a3f15c7a03ca1a6bd5. 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/USA2P1940125.
Efecto Dominó (feat. Grupo H100 & Bocho Ramos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa860a44a12c837caee52b2442d36412fb85438540d87971da2981e6e9e0094. 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/TCACZ1780331.