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 0x51f74d2d6676f58c6504d10f11af0f1dfc2a482e1a258ae795bac1e918585915. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91d070b9-c42c-4c63-9ea5-bd9fe2daec1b.json and https://artists.proofprofile.net/proofs/artist/91d070b9-c42c-4c63-9ea5-bd9fe2daec1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lohengrin, Act II Scene 4/5: Zurück, Elsa! Nicht länger will ich dulden – Heil! Heil dem König!
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 0xef4718ffd2bbe20ce2d14f2e6c38575962f510020b08070a36093638093661ec. 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/GBF078542223.
Szenen aus Goethes Faust, Part Two: Nr. 5, Mitternacht: "Ich heisse der Mangel"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94543883eba540f1226fbcd06ec12bc9d9a030c9075b54e4e690abcf3f928e12. 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/USSM10312184.
Szenen aus Goethes Faust, Part Three: Nr. 7, Fausts Verklärung VI: "Dir, der Unberührbaren"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa93268993d3427d2d073d59c33c913708e1efa892fcfce9febf67dc5b8cbef. 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/USSM10312195.
Khovanshchina, Act III: Ischodila mladesen'ka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67272425b7ad9b6e38986d0d2f6fcb6cd649abce66bd6aa511cb1e173ebe944. 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/DEF058931219.
Lohengrin, Act II Scene 3: Des Königs Wort und Will' tu ich euch kund – Nun hört, dem Lande will er uns entführen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e98d3078c8de9554d3f180188637f6cfeaaca344797efc029396d9d4f6abae. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBF078542221.
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
Szenen aus Goethes Faust, Part Two: Nr. 4, Ariel, Sonnenaufgang: "Die ihr dies Haupt umschwebt im luft'gen Kreise"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bea32b971750e4b1d37b3b9dd16b7a5122aab72dcd8120da9f276f66e4c086. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSM10312180.
Szenen aus Goethes Faust, Part Two: Nr. 4, Ariel, Sonnenaufgang: "Täler grünen, Hügel schwellen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e412b7b3e1a67c4b06ec6e9d840b0d8e6555aab5aa0a2eeab1bd4077898770. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSM10312181.
Szenen aus Goethes Faust, Part Three: Nr. 7, Fausts Verklärung VII: "Alles Vergängliche ist nur ein Gleichnis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c504a21029e41b75f5a48e0355df226e3812d408db57c57717ab2bfcd4b7c. 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/USSM10312196.
Schubert: Mass In G Major, D. 167; Tantum Ergo In E Flat Major, D. 962; The 23. Psalm In A Flat Major, D. 706, Op. Posth. 132 / Schumann: Requiem For Mignon, Op. 98b
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e095494dc56593e101367a153633ae6192a4a3603c8bbcd5d109e81e285c08. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEF059004490.
Requiem für Mignon, Op. 98b: III. Lebhaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb584cf701de8903e78418e3d91e127dc06ceadc6998b43e7d90c417cdff12145. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEF059004503.
Requiem für Mignon, Op. 98b: IV. Feierlich, doch nicht zu langsam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10b3c3c1ba333033d0f57d9c13b63198149efe7bf6b87a9561e48eeba39bb25. 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/DEF059004504.
Requiem für Mignon, Op. 98b: V. Die Viertel wie vorher die Halben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50065cca798e48fd5d0aa129edf4a67c9979baa05601f2d6112916c037c67ab. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/DEF059004505.