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 0x81a4e0d25bc95308d4aa201ad5d58546afb74953e18ab3fed50642e913a5a9ac. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdbb1296-d49e-4a5b-b204-93c3960cb21a.json and https://artists.proofprofile.net/proofs/artist/fdbb1296-d49e-4a5b-b204-93c3960cb21a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Terrific Trumpet: Best Loved Classical Trumpet Music
Torelli / Handel / Albinoni / Gabrieli: Baroque Trumpet Concertos
Oboe Concerto in D Minor, Op. 9, No. 2 (arr. A. Eichele): II. Adagio
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 0xfde484808e6d6a54c344926b999246009e8502123421f3a1a509346db7ae8e70. 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/HKI190742905 — a six-check JSON result.
Violin Concerto in D Major, Op. 3 No. 9, RV 230 (Version for Trumpet & Orchestra): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d0905af30469ff3871dc796142594dbd8d15ce8b21032edbd4cecd683ab683. 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/HKI192134901 — a six-check JSON result.
Trumpet Sonata in D Major, Op. 3 No. 11: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0da817e3fc5cdcbc7b42caafa5216dd4da04207caccfde111915d934ec493e7. 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/HKI192134905 — a six-check JSON result.
Trumpet Suite in F Major (Arr. for Trumpet & Orchestra by Annette Lauth): IV. Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf25bee820dc86b01157b65540ff6464e87a9b8f5da0162a3b9c750cbaef568f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192134911 — a six-check JSON result.
Folge 2: Warum schweigt der Schatzsucher?
Teil 2 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd852330dd4275cc4fe81a0ad0cee33edf2f7bd6aef0f4ff3b258ab39b03c605c. 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/DEUE12164542 — a six-check JSON result.
Teil 3 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50947ee8b389b2b42dcbdb87d7d4b36b475a3e5b7ad72d115f48eb65cc1f5969. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUE12164543 — a six-check JSON result.
Teil 4 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd821b8ebc538f39025ac79d3d59192bcc9ded9c34f49bf6c2e35c3ec86acb3f4. 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/DEUE12164544 — a six-check JSON result.
Teil 5 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db5587eab363c105c1d2c31566e1750f19fa755835c34736ad02900957a84ce. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUE12164545 — a six-check JSON result.
Teil 7 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c5f42a20c07a094e09b86941b0ff1cf25cc6a77a5f49bfc525e2b6066da168. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUE12164547 — a six-check JSON result.
Teil 9 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7ffbf0781e7fd36c40d75d375ba54284fc9b042e34d3ebff5f617afacd10f. 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/DEUE12164549 — a six-check JSON result.
Teil 11 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc2994efeac06764b10805b79d0a3dd785344c9d5e82dd2bb7812bc248a5828. 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/DEUE12164551 — a six-check JSON result.
Teil 14 - Folge 2: Warum schweigt der Schatzsucher?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9de7a808ac52d8bee8d4d906b784f508d58301c4666204128224da1d4a4b2a8. 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/DEUE12164554 — a six-check JSON result.
Melbourne Composers' League: Rear Vision
Memory Unfolding – New Australian Works for Cello