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 0x48d4b0c16e2302a7bdd438dc6e2b279df00f36604e815eba2e93ba489c97eddd. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/364277b7-5d98-4a4a-9626-8ad9f4092bd3.json and https://artists.proofprofile.net/proofs/artist/364277b7-5d98-4a4a-9626-8ad9f4092bd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musik an westfälischen Adelshöfen, Vol. 1
Dussek: Complete Piano Sonatas, Op. 18 No. 2 & Op. 45
M. Haydn: Die Ährenleserin, MH 493 & Ninfe in belli, MH 73
Martines: Symphony in C Major, Psalms 110 & 151
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 0xea4387f0ea42d7f8a1312e919a821822c416393c8baf2e8bf542bff8adb736d9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB202098501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e9f4b398bef487b89a21b0d90afb6836c4b9dccf7e0d9a846a7a7dfe4f5d88. 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/DEB202098506.
Symphony in C Major: II. Andante ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432b35f59ce383517630ce5c37caa077017e33668847b24014b48021e6c236f. 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/DEB202098508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb0aaf68371da932e9a8dce27a3e454e8248236cd6199e182eb2efa3cfa7e7b. 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/DEB202098512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679102a190093083ffd6867b872b6cded72e2648808552cccb8a2469d108d444. 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/DEB202098517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a876d0783c20796d3d617ced4e3d27aa5699b893302bb407790b0068c415e79. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEB202098502.
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 0xd2ca9c505223cf882c6b0b61d797d040fb7e35bafd1052381fecc8d9ed8aabd4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEB202098503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59d0106c905240a1ad6e998f683adf6de5a257c66e0c47a3bc27071aed8f4b. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEB202098504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab39543ff074aab5d5e126e71d9e9f167d260d6dddcab8a603383ade5cdf91b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEB202098505.
Symphony in C Major: I. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0ff16178a5c95dc6cab744931aeb71acfc59b1a9a8300d119dd6a1adf3e62e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEB202098507.
Symphony in C Major: III. Allegro spiritoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2f4e522fae1f6d38442bd673e4865dc041f24037c6d5a60f07f0324242238c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEB202098509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a5d5c22e2dabc724460349ce16a064893da95c0c3414e8e398610c79a409e1. 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/DEB202098510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e52fac277ed9c23535912116ed35caf53efc074ff3f7a0670f9b42d245698f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEB202098511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde12db5aafe9a869dde0c8daa72983c5d6f08b30c629ded9777109d2c52dd550. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEB202098514.
Michael Haydn: Die Wahrheit der Natur, MH 118
Michael Haydn: Complete Wind Concertos, Vol. 2
Michael Haydn: Complete Wind Concertos, Vol. 1
Haydn, F.J.: Philemon Und Baucis [Opera]
Mozart: Piano Concerto Nos. 3 and 8 / Piano Concerto in D Major
Haydn, M.: Hochzeit Auf Der Alm (Die) / Der Bassgeiger Zu Worgl
Biber: Chi la dura la vince "Arminio" (Arr. W. Brunner)
Mozart: Concertos for 3 and 2 Pianos / Sonata for 2 Pianos
C.P.E. Bach: Quartettes for Keyboard, Flute & Viola
Vaňhal: Sonaten für Klarinette und Hammerklavier
Giustini: 12 Sonate da cimbalo di piano e forte detto volgarmente di martelletti, Op. 1
Pleyel: Piano Compositions for 2 and 4 Hands
Christmas Music At The Court Of The Salzberg Prince Archbishop
Hoffman: Complete Sonatas for Fortepiano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb868674e6dcb29fb7ddd1bc9f332254c9a81e91ec0f253ffd9e17393c12e8e9. 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/DEAD60904505.