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 0xf69314cb04e79156d63cdbe298583d2232a403a0e84baa16572f0128adafe5ed. 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/836f522f-799d-4425-b5dd-b90d7e0b4f45.json and https://artists.proofprofile.net/proofs/artist/836f522f-799d-4425-b5dd-b90d7e0b4f45.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 0xd782561d141596a9b97444ae83b071733cc5161b72fb8c36f638c3c1e189527f. 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/USOPM1800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837101a8e181c10ea686e84ed8272bf32678166722866916499c7908ccecdc25. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2BR9700764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf9f4ba88fc9308ad6cfc31c3c0450d2c3a2c674151bbd449d01c5c0fb3e8c8. 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/USCGH1118323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae11bbbc3372844fc5f54466e67b720f4612d1111bbdad236fbc6193d94d811. 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/USCGH1118326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f3352677ef17b216936341fb63c03c2cdcc104bd9b56689d6922456f25474d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1118328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949740e71e4aa602e1cfe8cf7b0952383887b2dbddd6efe0678ed324535c548c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH1118335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003374488598c250ae37cfdd4a3f4e4c79b2b2a262622f1e92e0f520487a1096. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEL112400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd6dd3c62b8e1572d7227afa7d47a3e2333e000a435a494ef272be1e6311a1a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLH492305653.
Mi Loco Corazon - Boleros De Fernando Albuerne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5e2c1ca952939cc3aacba06268124fbc1218336b5e3d9d3367e714393727bf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLHR52122096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac14f84f002c0869799e5ce3904e7d1c6fcf60f2e53b0fc68546a0b123da3c40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DE1A12115413.
Star Bright (Christmas Recordings Remastered)
Christmas With: Fernando Albuerne & Coro de Madrigalistas
Christmas In Cuba (Christmas Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c74badaff76ab961232a53f35c179679dacd3a91021e4ce07fb3a834e19608. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2BR9705103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531c522e6cbbd0f070bae4af7e8cb102f212effc4c7761d26de25be41bfd6c0b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US2BR9702004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5d0f870bdb79e3c4d6aa360ad21406417faccac33764091a68d60e92e6fefa. 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/US2BR9700766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082383a1f4b9c6bf46908d0bd5ec08df9fd5a162d33d9a5ea810af7aa3853471. 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/US2BR9700765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc439ef2cd100a18d2e58dafb904a127de8425b312e68245de3eae2da4f2c1f5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US2BR9700762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaacb7b0cdb5d0599743bd6bb3a3a336d2abe4bcb782f0177d3592d9e55d72c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US2BR9700758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351019531f07999a7a4d526399a0aa836032d6b90df7306b4633249b240482a. 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/US2BR9700755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51b2e2acc6d8446ae7884e021f4ba7805ff42c1270f9c52287159050e334998. 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/US2BR9700759.
Christmas Collection (Original Classic Christmas Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb8c3947d1a00baeb12f621f8622d2934dc20daa512c2bee50cd963c41899a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES7630605360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc439ef2cd100a18d2e58dafb904a127de8425b312e68245de3eae2da4f2c1f5. 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/US2BR9700762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1efe7baca316ce7ececc48116f6216338a16d48a38a5edfd00e12e9ad18089. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US2BR9700769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23282e95b5ec74614f272a5907f4c7a3954d1c711389c2709e1f34a98359399. 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/USOPM1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604deaa91c160c38a4686979434fddfb650ede9ef7770f238be97a845fa943b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US2BR9700771.