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 0xbf58e925512fd8af12ae38089ed3ea6cd942f1bf110552e91c818b2e4cc99c37. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69808b71-5fed-40d2-8f55-8f2dd5a51503.json and https://artists.proofprofile.net/proofs/artist/69808b71-5fed-40d2-8f55-8f2dd5a51503.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 0x5d73dbb37783fdfef09fe3e3cda310790e4f49e2cf50b674b5f6f0e9c891dcc7. 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/ARHXW2002655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a48a78915dfcc7df67601838dd1d7fcd7ff2b659febff3360704eb1146aea. 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/ARHXW2301401.
Intro Biromes y servilletas / Rambla de Montevideo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622723d753349c704858a30cc817b110e46565a4e72629abc03b69e27ef8a234. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARD192400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5134317bda893784b9f301664eae6922dc68306cad6e3c9956fbb6a2b563a7d9. 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/ARD192400006.
Las clases de guitarra de la Señorita Cunegunda Lopez de Garcia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4728c902b249d66ba4deda3a69d26b59a0cf83404cf3d6617db73cf83f8fe341. 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/QMFME2165329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586c6b5f144ae2c71cc2e0c9fa537cc32e1e88cd86a00830af861ac3b0d57507. 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/AROAJ1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005c4f11fecb5b4778f7eb41b38c1ba59fda07f4ea06178d4b5cb12943ba371f. 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/AROAJ1600007.
Cerebro Magnético (Eita Mundo Bom! / Arrasta Pé Alagoano / Voz e Vento)