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 0x0ea9a5672679abf0aca0548b8f690668f0e61bba7045307d2c4567c423920ba4. 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/19520203-732c-48ff-8164-5c17da8b8b9c.json and https://artists.proofprofile.net/proofs/artist/19520203-732c-48ff-8164-5c17da8b8b9c.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 0x002ba7a3b3cd59c8d3dec9da62740ae3f8943b5f72747dc4e518b3ab78e50ab0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXB552200024.
Pajarito Vuela / Cuando Te Duermes (Dream)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc356b7bb0d44280d1c9847790742ab188506f8aafb42ff55859ae9877d9cce2. 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/US23A1552095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d76836caf7795d2e81bca4b29ffd3a875c1e3abe45c91360639bcae973a82. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/MXB232500059.
El Listón de Tu Pelo - En Vivo Concierto Sinfónico Cumbia Fuzión By Fuze Tea
Cómo Te Voy a Olvidar ¡Edición de Súper Lujo!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed09a4c75399b705f143122d7ab3420b94c85c8aa15e609111ea71d05f4e18f. 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/MX1721300516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bfdc738a1e0422c80d670b1381a9cdc61d33d52c0282a41d98ba225affebfd. 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/US7VG1706593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c715da86471e8238ca3e010edf8785abe8f920f6a4de8a613916f0d3f51daee. 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/TCAFF2040015.
La Dosis Perfecta (feat. Denise Gutiérrez) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040df5788a28a4284df81e6b971f98ccc58821bfc322929ec0c31dc8352e2a37. 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/MXF011500589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42c4a624a3c2fdbb71c8f2cedc650222608d36fb49a5bcf455d26701081d923. 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/US23A1571643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfda5bd1a818d1c2da04f713a750f10658776135a0fb2c26fa43f57896013a. 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/MX3141100993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5fca920f55d1a53fb30842ee57626911164ddd6dd2a5adf58d09c9bca40ee5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MX2260900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95996c51705a52c72d9244c19d5c456e1726d58b48357425ee52e40fe8e92604. 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/QMBZ92263769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5fca920f55d1a53fb30842ee57626911164ddd6dd2a5adf58d09c9bca40ee5. 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/MX2260900016.