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 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).
Yorkshire Feast Song, Z. 333: No. 4, The Pale and the Purple Rose
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 0x3697f03ef5b35be9ade83989c1cb8394601467c6c4c40869b9b21f2cad0a034a. 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/GBNVV1300186.
Telemann: The Grand Concertos for Mixed Instruments, Vol. 2
Concerto for Recorder & Viola da Gamba in A Minor, TWV 52:a1: I. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f0ab3f409de445ddf0e662a19d2b2819999ec3ea6d33df1e38c1854d785521. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEB201489005.
Concerto for 3 Trumpets & Timpani in D Major, TWV 54:D4: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c22bc0b98b282c7c0f65ba599063d2cb157910673ee56a7c83bb26ccd3936cc. 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/DEB201489009.
Concerto for 3 Trumpets & Timpani in D Major, TWV 54:D4: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92ce8cf5f1357884fdadd780ee15a332e2b4731d1f4d061052ae5b1c8ceed75. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEB201489010.
Concerto for 3 Trumpets & Timpani in D Major, TWV 54:D4: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0124a4d5e6e83dfa69d8d4b709986e9b258ee3042e2ae48bf96a88308ee1e959. 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/DEB201489011.
Concerto for 2 Recorders & 2 Oboes in B-Flat Major, TWV 54:B2: III. Cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c04c8c702d84d80cff5acaae3ee38f7a38b8268e6e648299deebb6f267fc55. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEB201489015.
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.
Rinaldo, HWV 7b: Lascia ch’io pianga - Arr. for Voice Flute, Viola da gamba & Theorbo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118cf6ee7b3fcb8753ec0c5f864e9716e770c0d720ea4a469b145c845b9cadc. 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/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 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/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.
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.
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.
Passacaglia in G Minor, C. 105 “The Guardian Angel” (Arr. T. Debus & A. Sariel for Recorder & Lute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b9df156fd1e52973eebdda8f19e55e4defab5fa6554493cb7ee01ef0cb25b. 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/DEEK32115614.
Sonata for Recorder, 2 Violins & Continuo in C Minor: II. Fuga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbcd7ef9d0fc92bd61bc47e2b42631115c2e0865ff67c3699af2a23930970f. 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/GBLLH2166302.
Sonata for Recorder, 2 Violins & Continuo in C Minor: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45702698f7be9e0659ede28e60ad0a9e0480f0afdc4499fd05285359c44d3f43. 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/GBLLH2166303.
Sonata for Recorder, 2 Violins & Continuo in G Minor: II. Fuga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f4298b7412203410f5bd5fb2664e1e08da93c1d47b5ea631af22ac71620a11. 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/GBLLH2166314.
Sonata for 2 Violins & Continuo in B Minor: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f14f8d0b680b36711a3dc01479065f8e4c9d94f670952d88d955c1e3d01903. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/GBLLH2166317.
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 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/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 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/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 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/GBLLH2270505.
Concerto No. 12 for Strings & Continuo in D Major, Op. 6: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8912e0641ee109975a5ea229bb0c1392789aaf139e65e03a8da13c766366d07a. 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/GBLLH2270506.
Concerto No. 12 for Strings & Continuo in D Major, Op. 6: II. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc06c3f4f09dfe62853174b8293300317251968316cfadbd7b634e38853e18bb. 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/GBLLH2270507.
Concerto No. 12 for Strings & Continuo in D Major, Op. 6: III. Allegro mà non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6534678f58a9d30213e6ee30c09c4f21e8c053abe98632b8291788d70122be2f. 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/GBLLH2270508.
Concerto for Violin, Strings & Continuo in A Major, RV 353: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa48adad280f2383053db425a83a239d9f24e94a6649ad9cbf87c25e090eb1d. 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/GBLLH2270509.
Concerto for Violin, Strings & Continuo in A Major, RV 353: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1dbae40e7dc50cb5de7b4910af015c8fffbb22598f94d3d34f5e659457e032. 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/GBLLH2270510.
Concerto for Violin, Strings & Continuo in A Major, RV 353: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4714a221ef8e0cd836b07d76c0685f0d8185d6a40edadd24a145dda94910ef40. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBLLH2270511.
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.
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 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/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 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/GBLLH2270522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53f03991de069a30a24260fd743865bbc448b15def198986947a214b3b35ad8. 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/GBLLH2270505.