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 0x13eba7d5b873efacbbb12bdd5f50f7f55ac52f065562e6fec5fe564977e5498b. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36b4f531-2bba-4e9a-84f2-cd98df2c6dfc.json and https://artists.proofprofile.net/proofs/artist/36b4f531-2bba-4e9a-84f2-cd98df2c6dfc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Telemann: The Grand Concertos for Mixed Instruments, Vol. 2
Rinaldo, HWV 7b: Lascia ch’io pianga - Arr. for Voice Flute, Viola da gamba & Theorbo
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 0x1118cf6ee7b3fcb8753ec0c5f864e9716e770c0d720ea4a469b145c845b9cadc. 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/GBEBL2024302.
Sonata in D minor, Op. 1 No.10: Adagio - Excerpts Arr. for Recorder, Viola da gamba & Theorbo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e94eb41aaf20a373775dd0a8b140b12b1ce6eeb0fb8b54afc8c65abb0cd3779. 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/GBEBL2024303.
Concerto in D Minor: Adagio - Arr. for Recorder, Viola da gamba & Theorbo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9731edde071abb1b41171cae7be7626cf22fc41bb8504443ca9230845fc3fa81. 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/GBEBL2024305.
Auld Bob Morrice - Arr. for Recorder & Viola da gamba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c2b1eb1b54859757fd9a698ad9f2f91d4a3506826c092f7582647781929182. 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/GBEBL2024317.
Ciaconna - After Bertali, Merula & Monteverdi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e99ac0c3b9f545e7c3018e4316504548a62151dd9f096153412707a7cd6674a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBEBL2024301.
Les folies d’Espagne - Arr. for Recorder, Viola da gamba & Theorbo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837408f1896d8ff81e264b7ced0b13149eea5d3e026f6f586b2d45542d7fdfff. 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/GBEBL2024306.
Spagnoletta - Arr. for Recorder, Viola da gamba & Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c821b626733b5f81d6b4cad3a625c7335cafe6475dcc3b0d5955a884a68e9b9. 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/GBEBL2024313.
Favourites: Telemann and His Subscribers
Concerto for Recorder, 2 Violins & Continuo in A Minor, RV. 108: I. Allegro
Introducione in G Major for Strings & Continuo, Op. 1: I. Largo e spicco – Allegro assai – Largo e spicco – Allegro assai – Largo e spicco – Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61985b9f72b7bea2f2d2c8103da4ac3bb481152979cbc5087a12f864781483c8. 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/GBLLH2270501.
Introducione in G Major for Strings & Continuo, Op. 1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0fef79c142968936e8c4ca3f00720a1a4622bba29dcb351b39f175df25220d. 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/GBLLH2270502.
Concerto for Recorder, Strings & Continuo in F Major: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35ded52936103bfa3123dfe5a79333eb27a8bb372953ff67a3d7a70acb7b085. 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/GBLLH2270504.
Concerto for Recorder, Strings & Continuo in F Major: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53f03991de069a30a24260fd743865bbc448b15def198986947a214b3b35ad8. 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/GBLLH2270505.
Concerto for Violin, Strings & Continuo in E Minor, RV 281: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2860c44528e4e90811dd86179bcb879cf7e73b3ae5985f33605bc4e09bbecd77. 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/GBLLH2270515.
Overture-Suite for Strings & Continuo in D Major: V. Bourée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd9c460e5a52285d3ee5d90319c208db92d64820d99e2294e8bc4d9aa070ff. 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/GBLLH2270522.
Concerto for Sopranino Recorder, Strings & Continuo in C Major, RV 433: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2954d2fbffe66e6eb57211670e826097a2f93f36cda2f77891f16351bceca. 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/GBLLH2270512.
Concerto for Sopranino Recorder, Strings & Continuo in C Major, RV 433: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f9b8d855849dd1b4b778f4787888d37b3feba05daf975c7fe0fbe857ed06ae. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBLLH2270513.
Concerto for Sopranino Recorder, Strings & Continuo in C Major, RV 433: III. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d37ac50590c2151ce5f2f3b8f4d74ed9fa1fcc14919057acc5f99cbc928379. 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/GBLLH2270514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53f03991de069a30a24260fd743865bbc448b15def198986947a214b3b35ad8. 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/GBLLH2270505.