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 0xd613a744c2b7c31c6fdcd058fb91d97a0d82ea19be59dcdc173d33e58224d999. 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/898038b0-2d2c-412b-b648-3e07c83b7aa0.json and https://artists.proofprofile.net/proofs/artist/898038b0-2d2c-412b-b648-3e07c83b7aa0.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 0x2ef15f0eb397ac5e3d0574440751ce96b582748fd07033ac3534185ccfc9e4c0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEF069711190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2ee9120d891b24570273fc94af1045f5d613bf7794426f11be9f90b3a46c47. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEF069711200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b59f261e187e3fb03d742a182c7249fb5ece1fb13645e9eec05820231cade56. 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/DEF069709010.
Das Phantom der Oper: The Phantom Of The Opera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108385f15644771c1f76c07de89291155744d469bd8a269644167957341de216. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEN129900757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f52f905f8295f72f8e8ebe455e5662f3256da00197c3c86b6cd817ae1a1492. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEUM70501765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c8237b401da51b0da60ec134b07fdcfcc24840ca99bb61f420d20b254a23d1. 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/DEF069611110.
Mehr Will Ich Nicht Von Dir - Global Edition / 1990 German Cast of The Phantom of the Opera
"The Phantom Of The Opera" 1990 German Cast
The Phantom Of The Opera: Global Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b4597e844b6bb602229f8bf3255d7d88ce20ea29c86074aa866988f0f456f3. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBUM72206180.
Könntest du doch wieder bei mir sein - Global Edition / 1990 German Cast of The Phantom of the Opera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683bf6b234dd71ce0fa9fd032f6bb2731ca1af4028afcdd2f8284d3a93cbbd3. 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/GBUM72206183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f13abe07a4bcc2203f85e223774aee258a0d1074510c71debbd557c4fbb876. 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/DEF069812830.
Das Phantom der Oper (The Phantom Of The Opera)
Hinter der Sonne - Lieder, die ich im Herzen trage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bc101136e9aee9953a9f6ecd3b3910dfeee62e394c5e6f49a07520948451ee. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEUM71018202.