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 0x0333b3306ce6baf9e01b4428dc56b920717e340f1ba10d42ab87bde344a29157. 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/7b524bd8-7a96-422a-a774-556e9d80523b.json and https://artists.proofprofile.net/proofs/artist/7b524bd8-7a96-422a-a774-556e9d80523b.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 0xb19fb225fb665e09dc8f8878b228e573230c63771507e69a79176329e9a37918. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLZ541700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dde188868b1746578e648f4f39a64bbc957c5b61800b97906d0f5290de344e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:32Z), 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/DEUM71716590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606d437c350a0807bb628626c3c3e9ecaa762d0c92b0e19c70adae13de08e47. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:12Z), 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/DEN061701291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa47a34770f59e6095c3050b302816da51861b63f7f2a472eba9d330a96eb80. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEE861902684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc013becb073bfc460d9b937cb94c7da3291aafaa528bc967bc6f11d1e6aa25a5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLZ541901599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc2e002528c0535b1c8d64d958fad17271602116fa884f21cc9fa866f701157. 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/NLZ542001684.
Different for Us - Eastblock Bitches x Ostblockschlampen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd9dbb60f6cb8b916010532f6cf5a2bc0cd6638e13508d90f33f0807c47249. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/DEE861902875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b0f25e38a7d51ffe3a10df82342fa1220473de7889df9a48d6f5ab3e04a5d6. 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/DEE861904427.