1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x71d81efeeab5a55cf369b5f162d61b3ea2cada3c59a7799ac57c9ab06d2cd0d7. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d26fdb89-1887-400c-9832-bf8ce7ea6768.json and https://artists.proofprofile.net/proofs/artist/d26fdb89-1887-400c-9832-bf8ce7ea6768.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 → block OTSBitcoinBlock must exist at that height 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 0xed0f210dcecbc13c4928b7b06409394bf3063f929c9138b1e015f53e4c9ebafc. 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/USCGJ1759493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc02c28d085c29361be3bea4440d4e2ebba60889f476242f62ab25517036ba8. 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/ES7630605106.
Benny Moré, El Bárbaro del Siglo (The Great Benny Moré)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ec05fc393cecefc1f9e0c9c9f8509ecc42acca1ef1601c7f7e3eaa9d00c6da. 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/DES010100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7f69fef24e84fe96066e59feb72db52181b62f3dba7e0a102e0f97ed3ed207. 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/DES010100610.
La rumba soy yo / El All Stars de la Rumba Cubana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1d386ef368893fe2c7166425be977f02fd050c09dd1d420a74141b844cb3be. 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/ES6100670743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de405ae1231f52c28bde681cfb0bff042e43916f8d7a561941fe22ec66714fc. 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/ES6100670744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c431de2db88a7759859c4b3814d5c9304bb34a37716c0811e3fc9483fcbeacd. 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/ES6100670749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369004a7f94455ba31e1ae61066ad9a8a0660aa3505686423a1ba6932c1b0575. 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/ES6100670750.
The Hottest Music On Havana Caliente Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505c087cf9a9f731772fc5a5b8810aee697dbdc8cb7c3e97588b5b1db81735f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USZZR0710754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fb9ff38520810719dac4e326be8da3452932b8d058b69ca7e90e90ad0aba26. 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/GBBFT9500146.
La Rumba Soy Yo - El All-Stars de la Rumba Cubana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd00630cdabb6a87629ba0f9b87149a98fc281e95efd9e9e2a484ef7e76fb4a. 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/QZYFZ2397089.
Colección Imágenes y Sonidos de Cuba: Cienfuegos