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 0x2737f11198f0926a4d7854b7c8a9255ede4f5911d4ca91dddbc3c8c35f9f3f7c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d97a6f9-1b71-41c3-8936-bb9b693893a8.json and https://artists.proofprofile.net/proofs/artist/6d97a6f9-1b71-41c3-8936-bb9b693893a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beaufort (Original Motion Picture Soundtrack)
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 0x443ccdac2993f0408b20d39640443c99678a4d45c08e9d75e161faaed41315dc. 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/TCADW1884364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df2d094e853dfafbdf9e81e2ab41b067058504dc755904f3d9e0dff3ec1380d. 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/TCADW1884368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b79ff9b54cef8c738310fda1606ccbe0022a4c5f25f5c70919ed6ddaecb6601. 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/TCADW1884385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2696a885346686791bb9e635a1000c31d6fbb97454350a7d3a76c149b715059a. 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/TCADW1884388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1521cadc96f4c15b94dfb17071e1d4e9144dc48abf5d1c64988925219df4552b. 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/TCADW1884390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0f50da78e766d378763e6e6b15266074d647949bc88a5ad3086be972edcd0d. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCADW1884392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78340bf127cb2ca277a5a39c4d495a76cd313b6e73b230cd999638d23f0d0547. 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/TCADW1884395.
Sympathy for the Devil (Original Motion Picture Soundtrack)
CTRL+ALT+DESIRE (Music from the Paramount+ Original Documentary Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bd548b57c8e119a4bda5461551850cedb5348a0e769d0081c46e7dc4532c03. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZD7E1800408.
Our Boys (Soundtrack From The HBO Original Series)