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 0x6319ab992e6b0df7770791642aaf7bf05e87542b61518471fb10ddb39d63473e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/217c028f-75d7-4d84-b6b3-3931354c4839.json and https://artists.proofprofile.net/proofs/artist/217c028f-75d7-4d84-b6b3-3931354c4839.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 0x6a9a92b9c556290e693f99193bc7ea11503269c08a4cd8bdd4be3dc30d983f2c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USX9P2045186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdcd93f15ed7ed6972ee21c5d41ca9fa195339000f26ecb33f9c540db87503e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USX9P2045188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a441f67d953b90d75e8e625bc815db4e0375a889477574e997a39ad10690d02. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/USX9P2045196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515598eec6c71b50cc09348d5b3e5203f03cc0eb00e20c068d346524508490c7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USX9P2045197.
Todo Lo Que Dicen De Mi Son Mentiras - Tributo Al Diablo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd9c241e28a6cf882a98fa4a8a56e4e4c67cb84e28eb00ac366e191cd14573d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USX9P2045198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954aa832aaceb4b228d8e1f2593fcbbb474a1f5bfb8ddbe4ade527d030cba232. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH1710476.
Te Olvidastes del Barrio, Pero el Barrio Nunca Se Olvido de Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b146d097242b817f0106f11c8fcc5c351f341ca2eaa1a27b32222946c76310. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH1710481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5839834c5a40bbcc65c63d7463f0f125ee36aa56d7cca39eb432fb56ce3c1bcb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:35:29Z), 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/USCGJ1818729.