Maurice Steger (born 1971 in Winterthur, Switzerland) is a Swiss recorder player, conductor and professor, mostly in the field of Baroque music. Career Maurice Steger is a frequent guest soloist with
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 0x2c72b144cc3f1228209b6177abd33a154b378b10199dc4aad57e1367c6d35fee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf8ce881-c284-4ead-ba36-28a091a39b20.json and https://artists.proofprofile.net/proofs/artist/bf8ce881-c284-4ead-ba36-28a091a39b20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto in G Major per flautino, archi e basso continuo, RV 443: Concerto in G Major per flautino, archi e basso continuo, RV 443: II. Largo
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 0x7afae708dd1ba62538391eb4c42b37b8227f6a6bea3eca2920bae4f7684c22cf. 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/FRZ141401020.
Concerto in G Major per flautino, archi e basso continuo, RV 443: Concerto in G Major per flautino, archi e basso continuo, RV 443: III. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab22d14ee9ab56a06ab9405e26212e23c949cbf819c6c02ffdd07218f3a31ad5. 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/FRZ141401030.
Concerto in G Major per flautino, archi e basso continuo, RV 443: Concerto in G Major per flautino, archi e basso continuo, RV 443: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2521eab73176c13df2eff0d8f49d4b36b8c485c81234069f7b980d2a703d6aee. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRZ141401010.
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
Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81c1e6829a5bee05c5ab2d6ba15514696c7dd5c4adec19f0b741640a4e8a2c. 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/FRZ141401040.
Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: II. Fantasmi -Presto - Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db644ba02d706b779d6291c1be580d9497da303c90644b0bd6a1a19c202c75f. 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/FRZ141401050.
Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0ed60502fe48a7566bbd86445ee5578f7c6b50f1990c493f48107d6090d752. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRZ141401060.
Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: IV. Il Sonno - Largo tutti gl'stromenti s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae336786a54f6fb35e44adfd892e8a4d9fecd28723acdf0d72f1cf9657d590f. 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/FRZ141401070.
Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: Concerto 'La notte' in G Minor per flauto, archi e basso continuo, RV 439: V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9727caac9a798b5a4bfa46da05756b6dcc03358461d0f78800bf55967fabac54. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRZ141401080.
Concerto 'La pastorella' in D major per flauto, oboe, violino, fagotto e basso continuo, RV 95: Concerto 'La pastorella' in D major per flauto, oboe, violino, fagotto e basso continuo, RV 95:
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6d2df46fd4189feed1c3f044d1d5205b8b7ced44d16a9ffd9d238b72c67472. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRZ141401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb81f6a1bd99768bb31dff6f2a178c01c814deef7fc06c272b820245aea8608. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRZ141401100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6767cb2f8041f16b32a3c544b8572eebf542e64a6f3e2b8af39eea507ef97cd3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRZ141401110.
Concerto in D Minor per due flauti, due oboe, due violini, fagotto, archi e basso continuo, RV 566: Concerto in D Minor per due flauti, due oboe, due violini, fagotto, archi e basso continuo,
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358e721f8cc53f58f4a400ebfcd0c95686ed62269a8ec8af53ac6ab08dd3a177. 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/FRZ141401120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b184162fae3eadebe7144a62aee0be9a0fd54634900fa42422f52afc4eede. 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/FRZ141401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed20e32cb39f1bd6be7e0bbf7d2026b9c88c1c3b4595f2e60b4ad0954504bdd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRZ141401140.
Concerto in E flat Major per flauto, archi e basso continuo, RV 375: Concerto in E flat Major per flauto, archi e basso continuo, RV 375: I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09554e87ff603cdf0553c428334d6a361a4c7c7a5650a5c55b36c1b1fa44f1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FRZ141401150.
Concerto in E flat Major per flauto, archi e basso continuo, RV 375: Concerto in E flat Major per flauto, archi e basso continuo, RV 375: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4745279184b5f6118f3490052baaaea083fb61a74904cf45cfe4113951db351e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRZ141401170.
Concerto in G Minor per flauto, oboe e fagotto, RV 103: Concerto in G Minor per flauto, oboe e fagotto, RV 103: I. Allegro ma cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70747b1ababd6469abdee6d8fb6f160abc5869dab6402de50906be050ccc1a80. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRZ141401180.
Concerto 'Il gardellino' in D Major per flauto, oboe, violino, fagotto e basso continuo, RV 90: Concerto 'Il gardellino' in D Major per flauto, oboe, violino, fagotto e basso continuo, RV 90:
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bd1166993208c2f3ed873728108714a5bf13d2e24b7c165eefc6061d8ee638. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRZ141401210.
Sonata No. 14 in G Minor: III. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9360272cd6c247e58b0f55d2445119c29eecfb978851d12849ac14aa3631e294. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEE471800007.
Nicomede, IPT 15: Amorosa rondinella (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8fc915a5e7df9640962fc4706c6dd057763c878da36bae92e94793d710efeb. 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/DEE471800009.
Engelberta: Usignolo che col volo (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd869fc1380e01cd7890314ef8c3cfc14e12c18f811ec9f7f2f80535ef3398e. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEE471800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2373c0ea7914286010bc1aa7268c9b0128087887359fbea3c7e6095c8f441cb. 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/DEE471800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b06dcfa55435fa9a79298a9f6dfdc5fe3554d381503601dbf5f35ff67486b4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEE471800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af59cb02c40dfbb125c3f0094791529e9d7080d32124b23ffa558dfa63ce820. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEE471800008.
Didone abbandonata, IJH 36: L'augelletto in lacci stretto (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dae634e31f1448457a08692291a341f8691ce9f06ad431567779757add1a85. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE471800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fa02a5b7a41dd4d8f3a22d9b8469731301f05e95fd6a4cb5bf175e90bf4853. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEE471800013.