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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1eb8e34e07f290b4d7bcd991a7a66a5b668e351def82113db91ad37fffef0f. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3d62dd7-fe66-46b5-a963-e336fa6d156f.json and https://artists.proofprofile.net/proofs/artist/d3d62dd7-fe66-46b5-a963-e336fa6d156f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08db36938c177df57a6955f8a7f49ade85798d4424a50db1960f97bd0725a85. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM22008373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55e6f525e47cf39a8b2012022d6e6b83d1474563b278981c6fb39fee95c9bc0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM22008374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf075ede0aadbb5d0e8c9d40f98412c7f90f26ac2807afe00c438ec95395069e. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USHM22008375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa3578b596f1445d8d93d7fd13a850266639f519729af2128b24819663acc1f. 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/USHM22008376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2976c80928f54abf1e95fcc1219605e6c8c3835e0f28223eeb1ea273e8b2b7f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USHM22008378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f88216169dfd8677c194f72a1a5784c1f7634b82d3152e6ac32be8cb4fd85b. 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/USHM22008379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a29da1a44d69a50cdedcb94456a5dbe814fe4cf56707448593fd4c55a32b8b2. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/GBKPL2082804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05bbaddc8193236642d0e0b1ead185c7d194fa59e8fbe3b8ee0596173a4dee8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBKPL2082811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb48f51d108ac72c5ee7ffe04f1a588817bc30ed4f73e11f061cebeca0f997. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEH742033158.
Daffofillic - Ubalist - Etapp Kyle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd732b63952f8feadd03b73dacac265331a10f1742afce8cdede2fb638b99c367. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEH742033163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf2aae806cf48097cb5870c9952fa0c736e45ab883bcfc29df7a590bb81174b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH742033164.
Laniakea Supercouture - Radioactive Man Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c45fc9d620b724955c144bf61ea02b144dac60aa456079e622ac271408d654f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEH742033168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee145adfcd2952b9a75b174f788e6743e6181a770e307fa613feed27415ce988. 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/DEH742033169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa0fa2e6bf8603de2d39608112cc0fe0a7d2f7a36f3ec6f19e0015b5ccbc905. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBKPL2083281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b4a93a02bac1b522d97d226cde51f4f12efdd8a48d8d2e99bc219ac8ad6e83. 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/DEH741719989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508eb0eb9113004d877351ae8466f7592788b99ab509e680338e9ca8585e692b. 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/DEH741719990.