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 0x4b7234b28fbe833892b3d9b3d211423d8b4f415a9102a14750e1080537464936. 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/9acc3890-a301-4db0-b5fd-b28fcea302cd.json and https://artists.proofprofile.net/proofs/artist/9acc3890-a301-4db0-b5fd-b28fcea302cd.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 0xdd24332ddaeb6b1d8300c741267130d6cf48003434dcff09ac9e95e88aa778c5. 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/ES6100670607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe476d6351911362df610fe15dceb4c1a8b41143a27fedb5dbde96a197bf7d4db. 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/ES6100670616.
Adalberto Alvarez Y Su Son - Grandes Exitos (Adalberto Alvarez Greatest Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4959a16824d2b1da41f8a432be37a6a22ea05be76bf76e61d59db42dcd5a7c19. 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/ARF050700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4897478d5e305d66e16c99addf786eb94fe4cfa7c387328222f2392afac27919. 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/GBMEZ1545585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29789c3a710c8c5c6d762d499dc565e31fc043f7714c837f064e81c41f96701. 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/ES6601400983.
The Classics Of Adalberto Alvarez y Su Son
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4d83fdf91e7ed273cb802f617e53278512d12c0f8e686fe9b5d1543a70f4ff. 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/ES6100678241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd6ab74603092aa07dd77c89d842509277745c88fc57025efd82eaab63daee. 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/ES6100678247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5ea297cce1e601add68d85766fb3771ab79b9029ff3491f7308bc0cf930177. 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/ES6100678248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0727eaf7bce9bf6535c4820b303fc12595510730da7645ac36d44e4923fcb4. 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/ES6100678084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a632ba3d2fcd3499b60359e75e302149d3d8de587f1f53fe689d0860cdcdf. 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/ES6100678087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a16344eb593cc5f05b7e6c2f168170c6682628353d3229a9d972e1940a7beba. 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/QM4TX2486451.
Love For Latin Rhythms: 100 Famous Classics And New Hits (Including Balada, Ai Se Eu Te Pego, Bachata, Salsa)
Añejo Carta de Oro: 100 Joyas de la Música Tradicional Cubana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2249faba8dc994110384195df39dbbfea51688307a5cf150bfd06082ab34674. 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/CUA021308973.
I Dance Cuban Salsa 2014 (Salsa y Timba Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a3cf1d7920756fa7f8835cd7e8aa551ed1220f1a4de3a67187bc181e99ccd9. 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/ITAC21400160.
A Lo Cubano: Súper Hits Bailables, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f0563169a16525851a4a920e4b8c445479b483e1383e2e1a5c470004e7b224. 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/CUA021309258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1a80b79efb7915fff9d2a854b94a4c1ea3ed7d9baed8b4733474f8879ff6f. 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/CUA021309364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287ebbee642cde214684857d58be36db9c448b79a443cc4576bc4a3e55131a21. 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/ITF250800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e8b099ed409c30a9c00214a90d36a0dff717a77be7302315be7d906dedaeed. 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/GBMEZ1545977.
Son para un Sonero: El Concierto (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b9cf6940b91b9c65a397a849ae9151571cc1f38e917ad6964b1729fbfc0e5a. 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/GBMEZ1545929.
The Real Cuban Music: Son (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e1093886bc2c3914bb5ec28c35787dae21d649662ed17e782b0b5efa71200. 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/ES5021501049.