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 0x905bdfab66a7ea4048476db40b1895218db63782485c617f43769f4656bb7289. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23fb145d-004a-447f-8fda-308afa4ef599.json and https://artists.proofprofile.net/proofs/artist/23fb145d-004a-447f-8fda-308afa4ef599.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tristan und Isolde, WWV 90: IV, Herr Tristan trete nah (Isolde) - Paraphrase for String Septet by Martina Trumpp
Wagner: Tristan und Isolde, WWV 90 (Paraphrase for String Septet by Martina Trumpp)
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 0x6c1ba733e86a37e827eee3d7cb467f7470f5a009d9a9045a4de6abff97e637bb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391104.
Tristan und Isolde, WWV 90: VII, Schmachtende Liebe, jauchzende Lust - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3195655bb7893b31e7c654b864e09332ecfb7766935c0680c3b116a2f40fa2. 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/DEX992391107.
Tristan und Isolde, WWV 90: X, Jagd - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070893c8d093298851af5f71691572dc474eed45844d42d8ac64c6d370fc50e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391110.
Tristan und Isolde, WWV 90: XIII, So stürben wir, um ungetrennt - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7b2ec8adc28b10ec24157a3beaebd57d81bf20dba64159de9babbb9b65cb54. 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/DEX992391113.
Tristan und Isolde, WWV 90: XVI, Sehnsucht - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d610880dc54d129f17d656c68f49ae82039092ceffcc7888e98791402a2207. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391116.
Tristan und Isolde, WWV 90: XVII, Das fremde Land - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffeef55702bba431eb001113426f8e67ea39178983f7b874041989a989e0a32. 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/DEX992391117.
Tristan und Isolde, WWV 90: XVIII, Kampf - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40abd1a85d8fb605f2439c3620bf755bf0132487aceb9c384480d59885449e3. 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/DEX992391118.
Tristan und Isolde, WWV 90: XXI, AUFZUG 3: Vorspiel - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31745d09fb2f835323e4e5f6155311af83c9864b9a9043ad75c411bac6e76bce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391119.
Tristan und Isolde, WWV 90: XX, Schalmei - Tristans Version - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4697212d0937150fb2ef67de27190394163b9ac5db49816170c07e3cd5ff0f. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/DEX992391120.
Tristan und Isolde, WWV 90: I, AUFZUG 1: Vorspiel - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0197ab607614cc7e4583034d012f683889905dcfb9268394ff5af40c399a16. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391101.
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
Tristan und Isolde, WWV 90: II, Frisch weht der Wind der Heimat zu - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e42f6c453c0c0450a12b5a72675190044d809d425c00b61bbcdd360f044764. 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/DEX992391102.
Tristan und Isolde, WWV 90: V, Liebestrank - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6997b8e5f1ceed1594610f01289dd37d97e647b2bef5b8d225652bd824524a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391105.
Tristan und Isolde, WWV 90: VI, Brangänes Verzweiflung - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57116940c0b24b22c9f0468a09a042a3bb74a57f412f50becd08b034676d9a23. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEX992391106.
Tristan und Isolde, WWV 90: VIII, Ankunft an der Burg - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247885fdafe94e2e8b768cd261915d49847225b69f3ff4596a44ea1afd8f2ee. 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/DEX992391108.
Tristan und Isolde, WWV 90: IX, AUFZUG 2: Vorspiel - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145873e9ad5a7ddd551c8ba931ea7371466efa0229219ce62a92507ac05e5db3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEX992391109.
Tristan und Isolde, WWV 90: XI, O sink hernieder, Nacht der Liebe - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d1817534a93d24c8a742487b52c71877e15040fcd00ff8f86fc3caddebed42. 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/DEX992391111.
Tristan und Isolde, WWV 90: XII, Einsam wachend in der Nacht (Brangäne) - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef461afb926ca23b415b43e0b5b7a552e9d3f9a1632bc035e4ff9293bc03660. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEX992391112.
Tristan und Isolde, WWV 90: XV, Sieh ihn dort, den treuesten (Marke) - Paraphrase for String Septet by Martina Trumpp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d8a5966a062743159e0affff48855d6d3bac90b77125d526f7d4d7eb99e0a4. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEX992391115.