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 0xe432c752813578873a000453f1b450cbbf625b8c6cb3be4e752051bfc6655639. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/599bc53e-2544-466b-b90f-a24424125017.json and https://artists.proofprofile.net/proofs/artist/599bc53e-2544-466b-b90f-a24424125017.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 0x2d6ac06aaa39c0a7ddd89d88c87bf46f4cf7b35f60f0d88610c5694c389528a8. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/USLZJ1839333.
Party (Daniele Baldi, Pagany Soulful Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b903544c1d2783df2c2092b074bb10a10fa45dc7fceb4f2ee9cec57c9583aab. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ITZB42357036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a8a90b73851b82b695352b1d4da071bfbb516bab763a3e3d9c13cdf8bfeee. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:29Z), 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/ITWFZ2023053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a8e1ff9045819cea23ab7f9e1f6231cf48b931273935cdd6d0642391d75174. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITWFZ2024013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee5870a540cddd04bfddc3edb840be2710def82d30d44b612c1625915e9305f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:54Z), 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/ITWFZ2025012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de21fa695c8a58895d3477c2540d51a31347c9edb4f2bbdd1d5f8ab261079c6. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ITWFZ2025026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2945727300420c8c02cd52730c5ea82cd08b9378d241e84c0ac940a407b74e77. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITWFZ2025035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9413ed0ce2173e9ab3b92cd3e0fa61108fc1f04f43a6e5ed03cc56a7a0531382. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ITWFZ2025039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a63eabc2c1dc1afed9a028f92b18451ac41df9cf13cf920e3eb263f4bf7f39. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ITWFZ2025041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9064b053f21690a426d3f944e4136d392e72a48858dda2626e5248fe7b87354. 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/GBKQU1838413.
Different Chill, Vol. 2 (Best Chill Out, Lounge, Deep House, Electronics, Downtempo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff4ec994d02bc26f8f70ccf32a21313a705a3cacda2d92c7b5232402b767916. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN1804516.