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 0x434dc8c0513b0621f9666dd689156cc3d2fd8e26cb5f849f31b1bff9b6451a9a. 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/92435b19-2b5c-412f-9ea2-136c336f117a.json and https://artists.proofprofile.net/proofs/artist/92435b19-2b5c-412f-9ea2-136c336f117a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Main Theme - From "Once Upon a Time in America"
The City of Prague Philharmonic Orchestra
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 0xecbbb7c26181fe1a52c8651bab1c335328a798f9450d48c3b40670129d770bf2. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0700116 — a six-check JSON result.
Hedwig's Theme - From "Harry Potter and the Philosopher's Stone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15297af8bc72bd3dff32e1cc6f79e1b01b223975fdf5143c18c1b533c578f0f2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0203704 — a six-check JSON result.
End Credits - From "The Land Before Time"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519748d996b77a78ef19fbb1ada572666bea79a1918e1ad72d0db9cc040897f3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9800856 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e96299c610c80eae419458c93b528805e740b63f73321bd1230472b99d7493. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9902368 — a six-check JSON result.
The City of Prague Philharmonic Orchestra Plays The Music Of Danny Elfman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc412eef2e78ae6866d6dd6ef9b51da6a87475ac21556efc0c0d307dbffc4a0c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9700659 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e96dbdb47358e01a9dfdce9286d2ce7bd9b55f5b4c6a0cf6ccefa455f768a0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9800910 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6b7a30687a85a37195965353a196f5947de389541315449ef6bbe3f790ac56. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9800909 — a six-check JSON result.
Conquest Of Paradise - From "1492 - Conquest of Paradise"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f09f27154777a85bf4e5bbb047a4acdef6210c985e93dee8e5da3135246159. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9600164 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f527bc7e6b921faaa4ba962820b532e523b0f84684dd25b6a93ec78dec04ae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404780 — a six-check JSON result.
To the Rescue / End Credits - From "The Rocketeer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0340e594376c1e36f8150252cacaab2574059403fd34b47c956105a4350d4d5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9600083 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891b640cb85f960cddaca1a60a377cb6f095a2daa3968f95440e469153d90e32. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC9700776 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7607a6fec8e4aee0e1a1f928a479a2214af138fbde62808fd2f5534424339635. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404773 — a six-check JSON result.
Concerning Hobbits - From "The Lord of the Rings: The Fellowship of the Ring "
The City of Prague Philharmonic Orchestra Plays Music from The Lord of the Rings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d659c164528e3efd66aa396a5fa4651d29881683b4f7a3bd520905857d3df66. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404550 — a six-check JSON result.
The Prophecy - From "The Lord of the Rings: The Fellowship of the Ring "
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da97268e7feebb176f7c47ba3018a2979381a7df70868a477e9b387b674dd1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404549 — a six-check JSON result.
The Shadow of the Past / A Knife in the Dark - From "The Lord of the Rings: The Fellowship of the Ring "
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffd1372ce165f407dd0af2258d03c48aa8d763eeb7b5e32d9821c44f032256b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404551 — a six-check JSON result.
The Bridge of Khazad Dum - From "The Lord of the Rings: The Fellowship of the Ring "
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922d6b2b17c6e52e7237915c9e6c0547948b3b66594660bd7df26f201729d35. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404552 — a six-check JSON result.
The Riders of Rohan - From "The Lord of the Rings: The Two Towers"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0639d126791c55f824ec81b85f3ae99823405ea829e8e8c3aa63b13cef0d3076. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404553 — a six-check JSON result.
Evenstar - From "The Lord of the Rings: The Two Towers"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b50a282d11a95fb35aa5842937680b00d9aaf5042de9b05b4aba4286bdc4a4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404554 — a six-check JSON result.
Forth Eorlingas / Isengard Unleashed - From "The Lord of the Rings: The Two Towers"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d7e4f9413268f4696471866d0e6800df2927a438bdfaf8d384a39be49f8d13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404555 — a six-check JSON result.
The Return of the King - From "The Lord of the Rings: The Return of the King"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e378a24c2fc0bd7103c702d28d78a532b6a2e89613bc9b113b81d6058a2e19c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJC0404560 — a six-check JSON result.