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 0x1e16f54012ca40bc457ed7d78e317ad4eaf653d45e278da0f5b0971927770a4f. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c541c2a4-363b-41f4-867b-7f8d3f95e362.json and https://artists.proofprofile.net/proofs/artist/c541c2a4-363b-41f4-867b-7f8d3f95e362.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Webern, A.: Vocal and Orchestral Works - 5 Pieces / 5 Sacred Songs / Variations / Bach-Musical Offering: Ricercar
Bach - Musical Offering, BWV 1079: Ricercar a 6
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 0x095857f627e8ac4bb07312b929f77f76764ed92d7bd20dd6b753511859813003. 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/HKI190917301.
Goehr: Colossos or Panic, The Deluge & Little Symphony
The Young Person's Guide to the Orchestra (Variations and Fugue on a Theme of Purcell Op. 34): Strings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1de026b19b918a694b7fe769dbbe0ff04f09d22faa0dcd49e922fbfba6576d. 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/GBAYC8902578.
The Young Person's Guide to the Orchestra (Variations and Fugue on a Theme of Purcell Op. 34): Brass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83a365e6901b41ce514dc33c0dcd423b690ee3f71d7af41b363e87ba772e14a. 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/GBAYC8902584.
The Young Person's Guide to the Orchestra (Variations and Fugue on a Theme of Purcell Op. 34): Percussion - Variation M: Moderato (percussion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9595849d26eefd01f90059bbba860dfc29ebfe3448b08132abe1a26a29079b98. 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/GBAYC8902588.
4 Sea Interludes, Op. 33a: Sunday Morning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76aff6903c597fc1f2c1412e0d5bf831e5d65c726bd7a70bbb9587011a64d2a. 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/GBAYC8901407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af2e4d2da233a59269f3cbb143e0ad8c12ff08ed5076039a35e013eceb18124. 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/GBAYC8901408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cb4e8f0c2684127be405a14dbce73715063c5ea1e1316a7118169d4bc5418f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC9003894.
BCMG 2013 Sampler: New Music for New Ears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a94093ba0140bb10581ad64b6122ef81f50dbb911f42a741c8eddad895d318. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBELX1706489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4aa7715b8b1f318fe768bca037bb198e9808857512534f30eb380993e34fc6f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBELX1706477.
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 for Viola d’Amore, Strings & Continuo in D Minor, RV 394: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8851ac92f07a6de6374c3000fb9e0f04e6a68d34474262e8d6f3fbd8a40deb0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLLH2269901.
Concerto for Violin in Tromba Marina, Strings & Continuo in G Major, RV 313: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332fa587289b5ea023a4cecfde08ae2f607c434a2719d9575f9e0737f551d882. 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/GBLLH2269904.
Concerto for Violin in Tromba Marina, Strings & Continuo in G Major, RV 313: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc4274917a573b6a3a9addf3776dc4fe56fb2109b176c894442325b8af7442e. 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/GBLLH2269905.
Concerto for Violin in Tromba Marina, Strings & Continuo in G Major, RV 313: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0204f07fb76fa9a34f9fd434bb368062dbd595342f232275724f44443e9a0da. 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/GBLLH2269906.
Cur sagittas, cur tela, cur faces, RV 637: III. Aria: Andante "In te beate Pater"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87110637db29023c02f06265e3bee3151c8f151cf8bd8ff3458adf15704e91fc. 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/GBLLH2269909.
Concerto for Violin, Organ, Strings & Continuo in D Minor, RV 541: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e73ec65d85341bbebabb9827216a02d31d4a2cc2fa460823ea9d2acd65d63f4. 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/GBLLH2269913.
Nisi Dominus, RV 803: I. Allegro "Nisi Dominus aedificaverit domum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81270a65f73a14f54adaa9319f4766477bdd095f7f5dd7a2012aaf8d24eaad86. 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/GBLLH2269916.
Nisi Dominus, RV 803: VII. Larghetto "Gloria Patri, et Filio, et Spritui
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8377861da1388d70bc886d7c17b32fbc33036ca4a6c6be4de480ea34987954d6. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/GBLLH2269922.
Britten: The Rape of Lucretia, Op. 37, Act 1, Scene 1: "Rome Is Now Ruled by the Etruscan Upstart" (Male Chorus)
Aldeburgh Festival Ensemble/Oliver Knussen/Ian Bostridge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1080e78ba2a0f78ca994c20ffde907077b63eb2f46ce3e10149721c31bb90328. 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/GBPFW1200224.
Britten: The Rape of Lucretia, Op. 37, Act 1, Scene 1: "It Is an Axiom Among Kings" (Female Chorus, Male Chorus)
Aldeburgh Festival Ensemble/Oliver Knussen/Ian Bostridge/Susan Gritton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04859915f01616bd5b8cea5340d03530d1c7c7251f691e7acffe13a366f3511a. 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/GBPFW1200225.
Britten: The Rape of Lucretia, Op. 37, Act 1, Scene 1: "Here the Thirsty Evening" (Male Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe200f5abf4e2328bd7652e514ac31334b760a71e7fd59f034a7dd8623f821c6c. 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/GBPFW1200226.
Britten: The Rape of Lucretia, Op. 37, Act 2, Scene 2: "Good Morning, My Lady" (Bianca, Lucia, Lucretia)
Aldeburgh Festival Ensemble/Oliver Knussen/Claire Booth/Hilary Summers/Angelika Kirchschlager
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c829af933edf158086ae131174021625329716999dcd1b23123205375559af. 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/GBPFW1200249.
Britten: The Rape of Lucretia, Op. 37, Act 2, Scene 2: "Flowers Bring to Every Year" (Lucretia, Bianca)
Aldeburgh Festival Ensemble/Oliver Knussen/Hilary Summers/Angelika Kirchschlager
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09a34434318a025d21ccb78845af17f7315e33da8514e0bcdf618b29c3f0b93. 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/GBPFW1200250.
Britten: The Rape of Lucretia, Op. 37, Act 2, Scene 2: "You Were Right, Tarquinius Took One of the Horses" (Lucia, Bianca, Collatinus, Junius)
Aldeburgh Festival Ensemble/Oliver Knussen/Claire Booth/Hilary Summers/Christopher Purves/Benjamin Russell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac1e9ea52d9637c4ea68747f4c896366182d963681e88479ae1f58d45f3feb. 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/GBPFW1200251.
Britten: The Rape of Lucretia, Op. 37, Act 1, Scene 2: "Their Spinning Wheel Unwinds" (Female Chorus, Lucretia, Bianca, Lucia)
Aldeburgh Festival Ensemble/Oliver Knussen/Susan Gritton/Angelika Kirchschlager/Hilary Summers/Claire Booth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb4699897b34aedc3e978256eda9e44e7637c55f01de3e7b8754398c80fb00. 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/GBPFW1200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe917a5d14af26fe3d12331a055a4c0c53897c5a549f76aa4451b31189637dcc7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAJU2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97ccc33fc53d77b8da9a6b1c36a70dbf57ae1b96c9cabe0a49cddc1fd8ca3d1. 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/GBAJU1900267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da394d557126d51a3b30a2e9d11df4dba2cb5b45b2bdb4fce22e890e721baf1. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBAJU1900265.
Eccles: The Judgment of Paris & Three Mad Songs
The Judgment of Paris: Symphony for Pallas - This way, Mortal, bend they Eyes (Pallas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25c05e60b1f0d4c0204b5612bc7b68f45f4d988a8ff1082c3abe523c0a82ed. 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/GBLWD0902610.
Durey: L'Offrande lyrique, Op. 4: IV. Tu es le ciel
Elliptics: I. Like a bird that has hit glass
Charlotte Bray: At the Speed of Stillness
Great Composers in Words & Music: Claude Debussy