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 0x2ca825a0b282912268b8f43b24e580b2c5e8d7439fd35980e7b7c43b0ae8b59f. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af670019-65ed-430f-98c2-6671a76815a7.json and https://artists.proofprofile.net/proofs/artist/af670019-65ed-430f-98c2-6671a76815a7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Der fliegende Holländer / Act 3: "Steuermann, lass die Wacht!" (nur Chor)
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 0xfcaab67284da8b5289448375b9f315c48c5b0f2f8c24221f99ac1f83fc64b359. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131611 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act I: I. Introduktion. "Hojoje! Hojoje! Hallojo! Ho!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9c94d01dc216f1e423c949a9537112452b237e568b83499a397cd318932a83. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131638 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act I: "Die Frist ist um" - "Ew'ge Vernichtung, nimm uns auf" (Holländer, Mannschaft des Holländers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b6d074d31f4842f83773f5529fa279d09cf3323e9e65736178e0e74f402687. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/DEF057131602 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act I: "Südwind! Südwind!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911ea5d27547a90ebb61a9bebe17510a6ccf8f2f5da46eee64cc1904f143caea. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131617 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act I: "Mit Gewitter und Sturm aus fernem Meer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7c35d5e03576662c8d99aac071356f10b1f7612b18b0165127d049edd2fb6b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEF057131618 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act II: IV. Szene, Lied und Ballade. "Summ und brumm, du gutes Rädchen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c357f22349ec1cf5472487651b1858ac188e5a5e2ae44d811b77aa365090147. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131620 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act II: "Johohoe! Traft ihr das Schiff im Meere an"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24000f8a187cf1d87d7d8df24a65b22ac1d46c86b3e3550291f8622477b9a6b8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEF057131621 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act II: Hilf, Himmel! Senta! Senta! (Mädchen, Mary, Erik, Senta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a5c04a68a1f99b69a29e5e23cd1cf9418aaa3dbb7523b80bfa3920d1a3c927. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEF057131622 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act III: VII. Szene und Chor. "Steuermann, laß die Wacht!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa93d44e6b7e3dd577a0cdeb38218a5c4c95127db608b884ef54f2fd51cef505. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131632 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act III: "Johohoe! Johohoe! Hoe! Hoe!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7d3c27d8665f37384cef6137fb8f7f543c450163799f6c7145dda9548456da. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131633 — a six-check JSON result.
Der fliegende Holländer, WWV 63 / Act III: Erfahre das Geschick, vor dem ich dich bewahr' (Der Holländer, Erik, Senta, Daland, Mary, Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb09912de0ea42dbe6475d1859bcabee4394c60e47259507fa3cd8955f9b2532. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131637 — a six-check JSON result.
Twilight Of The Gods: The Essential Wagner Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaab67284da8b5289448375b9f315c48c5b0f2f8c24221f99ac1f83fc64b359. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057131611 — a six-check JSON result.