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 0xd5cf978cfd4b39bb928b4f36d5b8f5d23f95c3fea79eaa8999a981dfbcaa021e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66c69ffa-cf44-4223-9dbc-f8aeb4083574.json and https://artists.proofprofile.net/proofs/artist/66c69ffa-cf44-4223-9dbc-f8aeb4083574.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 0xed59fef0c21afcdc71863da5dc5380db590f7bcb8e9e88e7105e3e621a15584d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:52Z), 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/USDBB0609247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aace87a20d87f579a946da4371888c8e4c0a5cceb1f501838c42f31b6e2d9c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:09Z), 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/USDBB0608707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59afdce8a5583dda01c041a9d79e22bfb381a6ab7e1836aae432d241ad0dd3fe. 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/USDBB0609567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8757c18468401517bdff0c8d096aafcbdd4ae977c40826bd806a5bfb847bd7. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:59Z), 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/USDBB0610160.
NYC Salsa: The Incendiary Sound Of Latin New York
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86437ebc0bff2ba672f44c6bd04eddfa933670b9bc9e743ad17f0f3901888197. 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/USDBB0609193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af8918d26bd46984d93442b2a02cb366f371e0e707d63e0baefecec58f467a. 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/USDBB1600045.