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 0x4a95c81522c6db59d8545607658c4e5af9abeb7bef42f246153f4bb24ad76822. 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/d8b667b7-1bb4-4bf0-abee-979180cfd26f.json and https://artists.proofprofile.net/proofs/artist/d8b667b7-1bb4-4bf0-abee-979180cfd26f.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 0xd2eaadb14f48ae3de73725bf81e0c6e2b5bb451ab43bf4c5f9e65351a9ecd27f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6XX2192866.
**WINTER--BOOTLEG?-2007** - Best part + Slowed
**WINTER--BOOTLEG?-2007** - Best part + Ultra Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801d8fafa18ee9935f62ba174a8446a28d78c2bfb35f613c864fe006e992990. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2488843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadac0e77c8426c11d554d52cabe7e035b96426b10321cb7324d5aa708e79862. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2494145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1bc80b8723ec6fd5e18a659c8856e70a2d91c1b08face439b8f568e85499ad. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USANG2494149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ecdc7ab4bc775fb119c7e36e83ef52acaa16a4fcc96c816e9e8f02ca7cef4a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:58:30Z), 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/USANG2494152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d54a3d61f8920f98c6502aff3d1b25c498e024a11684bd58c2bdb27073ca855. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKEX32510924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c61b3c229e88236975f8493a0ffebd3c1091e219dea2b3941f38607ee8bbb0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR96X2510236.