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 0x93c35b4871392f980431f991601dc0f3a172f01d30a4d2dc5cc0a2aa23f4bd54. 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/e5d8c3d5-13be-480b-a003-6904321514fb.json and https://artists.proofprofile.net/proofs/artist/e5d8c3d5-13be-480b-a003-6904321514fb.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 0xe62cf96e6ba1f9323eb8e6413cb309b4749e1c892ca2b73a34c1dcf206e2bb7e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLZ541900751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b93e7fb36c099ede9689b290c97cb6f9468cb38f3efa2f5b8b8838da0347823. 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/BXHBP1900361.
Bass House Anthems: Best of 2019 (Presented by Spinnin' Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62cf96e6ba1f9323eb8e6413cb309b4749e1c892ca2b73a34c1dcf206e2bb7e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLZ541900751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f45548063cd417390f21a493b59345c7b6dd5a0785c3474f5b8544a7e6a61d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZZOPM2116735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf95703caa013d6fcd58ca161efa77784833c2e5f725f8f65c64442b940ee9e0. 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/BCSOT2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56caf818af228d0226df41580c8b9ae55a022d018700b393c0adff3320378026. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRDEP1800212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c08b79fe66e530d28a394bcb461272535974cd3f8c43ea0cd63154f83395f42. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXHBP1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ba06fadaf9aaf406ff1b5afc8b307d6d13d8bb77cf9b74a476169d2beee35d. 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/BXHBP1800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f63f4eacc4aabc0ec1782c0e5e417be9ce13bb395bb9d2311461cf6d119520d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXHBP1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9965b892df1f774ed7e6ff3ce189cdcac6f16206ac51465ccc8516fe474393. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXHBP1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6cae0faf17081b74c4f5951de2e9e1b43f00e495dee6ec69f04bdf1b911035. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXHBP1800077.