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 0xbc409c98b8176b5bedfe1572548f7095191c19758819fb29851dd3e635ff90ed. 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/25568227-b53d-4fe6-9d7e-30f38b7ab845.json and https://artists.proofprofile.net/proofs/artist/25568227-b53d-4fe6-9d7e-30f38b7ab845.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 0x7ac0f94e15d37f14458f22b739386863078ae3a42d806d907b1f378f737d20a7. 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/MXF149900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d697c235099a6e87b24cdf344e77e01fd61567a2ff4611b0dd1b32a6a4bb83. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF149900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c28a6d3c52096432e1c7419b1710578077718e4724146fc798538edd804c4c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:35Z), 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/MXF149900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cbdad834112de55389d8fec39e31d6849188d7a2700e1ebd176a220b1ec3a8. 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/MXF149600452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0abac35eb58856aa9a9feed04d80586bef1a6674344aadc815535286b837c60. 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/MXF149600454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccccb1dafbbfa1512078d9702e620dac594c5b525db51ac334c71a9be7c4b5b8. 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/TCABZ1410735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fce0277a7dc56daf23074568bca5b97b9b723b8a9b25f1e9f01db39d055086a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEL1937285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c832b0fdae5d91d5d60e0e4fa8f84de8c5b5e3f047d89653b8ba08614a4381. 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/TCAFF2077219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cda09e2fc20a6dfe96b4075a067ff9a37a5aafe27df58aaca590663ba39fe1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAGE2221222.
Medley 90s (Tiempos Nuevos / Locos De Amor / Y Pienso En Ti / Di Que No) (En Vivo)
Medley Novelas (La Vida Es Rosa / Siempre Estarás / Girando En El Tiempo / Sola) (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b955734743512f75c26c8a6d173fe346cb6634047c762a9947a95111b1628. 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/TCAIK2432877.
Por Ti, por Mí (feat. JNS) - En Vivo - 90's Pop Tour, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c677c9a30a4468d08261d224933b4325f7e40bf18a7698a866754fca556a0a7. 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/MXF011800204.
Yo por Él - En Vivo - 90's Pop Tour, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b069969b1eef5265d8248c9d04ff53cb6a229724d8f14e9e0f63452b87533e. 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/MXF011800211.
Shabadabada (feat. Fey, Calo, JNS, The Sacados, MDO, Litzy, Iran Castillo & El Círculo) - En Vivo - 90's Pop Tour, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5639e486fa67c8f5d98a8cf46153fea99ec6ba6f737f9c06220e71589d063777. 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/MXF011800242.
Mírame a los Ojos (feat. Calo, Iran Castillo, Litzy & JNS) - En Vivo - 90's Pop Tour, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938ef3c584afeec7398ff4de9aa4d66106e1365fd1ee88c3fdfc6475cf0abb9. 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/MXF011800243.
Muévelo (feat. OV7, Calo, JNS, The Sacados, MDO, Litzy, Iran Castillo & El Círculo) - En Vivo - 90's Pop Tour, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec47fb5f8abccd04ffdaa0b9a24e8cf8b8d91124a2c1f95fceab46bda9a66a3. 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/MXF011800244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69917aea5b01f4acd1f1f90d8d1010eafa29617ca10f991bf16c9fcfcb8177a. 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/MXF149600455.