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 0xb9728941296db4d1da1dd4bcf4fc686d4d8ee73f032275b6469d013b0cd72fb0. 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/fe315377-d3a3-430d-8813-d49955382d4f.json and https://artists.proofprofile.net/proofs/artist/fe315377-d3a3-430d-8813-d49955382d4f.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 0x510e0fae32d6648c52a7fac6c98ef063a0bc2000bf0d33c18b8b9af1baf83535. 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/DEN061600652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d64b820ee99d0328249a699e15da5322e84cbe0d6a08b4e95f0f3d0e1d2cd. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DECE72006822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878f1e556e2a87243d9267f738a3ee3aade0fb4e344b64e457473c4ca97f47d4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DECE72102938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56adf3883434df1c524ef40165716f930c045df56eb9edc1e2edcbaf0cec751. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DECE72103813.
SMILE (Lost Identity & Teknoclash Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca7d6d211f423a959900c53afbe2ecc8296458c6e24afa1f57f772c68d96e46. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/CH7812220877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04478ef02055529df81335e6474889c9b68fe9cba61988cdbd358fda4e7d9dc7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7812227034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc25620fd7a7902182d2f2101795cef6d1b5b740797bddbc57cfdf409d66172d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH7812240513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1b92a25589fec9d0998c21393ddcb6dd83c7277f077a5c828a93702fa63c88. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEPI82311409.
Dreisamkeit - HouseKaspeR Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ed165e53e2f39554c900a1e640595a0ce69e91fe9b0fa3839943efc9814b5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CH7812355240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d63bfe1510eb4074a8f4c258b2a995eb51a49078a4cd853e470db3a533297. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7812358149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd50e7bdd2d36d47d05175bd2051ce257e30f8e7ef30f5c7633c66f1cf4b55e5. 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/CH7812400806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbed2875ce51d67f0b935e656ae758796895a3b0f87a3ca8b51924283aeba83f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CH7812409035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401035aa2b62353328501261ac8b7678898f96fa2a09149fe5b081f8f172862. 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/CH7812410064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b3142737d70e3e69b6b2b552ae53b4607ba6c06585e9b823c4c44e31d7b5f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812410063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbed2875ce51d67f0b935e656ae758796895a3b0f87a3ca8b51924283aeba83f. 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/CH7812409035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2369fb5958789862f9a0c07a9eb59f5610587af8102a3c58f1859bb0695e96c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH7812404634.
Bobbycar (Haze Schrägstrich Störung Remix)