thumb|Portrait of Mikhail Glinka by Karl Bryullov, 1840 Mikhail Ivanovich Glinka (; ) was the first Russian composer to gain wide recognition within his own country and is often regarded as the founta
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 0x5b7f8f20058fb67aec18642d8d54950309fd7036afc0928cc129b872da6a5423. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9099a249-5ada-4020-971e-a8d6b278b78a.json and https://artists.proofprofile.net/proofs/artist/9099a249-5ada-4020-971e-a8d6b278b78a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8e3678016bbf74259412714f05df8e725d416fe1df1f0c8ec8344b5e53007f53. 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/USX761324207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9795b336b2cc822c5f10831b3b5843f3e6d7801b439f7826fc42d2933f490e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USX761324208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5247ab96dcc799feab87cfb76a2dc4b7938414a233f9bfe84459f33a80318ab5. 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/USX761324210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ac580031d9debc5decd0f7470f42edc672db75461703f295172fa29c7ded2. 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/USX761324201.
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 0xbe2d85f1e152406a3d41a71230f3f2d85344a4913506ac2ae5d16f17fb79a1cc. 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/USX761324203.
Caprices & Fantasies: Romantic Harp Music of the 19th Century, Vol. 3
Echoes of a Waterfall: Romantic Harp Music of the 19th Century, Vol. 1
Glinka: Septet, Trio Pathetique, Serenade & 3 Russian Songs
History Of Music In Sound, Romanticism, Vol. 9
Glinka: Zhizn' za tsarya (A Life for the Tsar) (1954)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7346e47544607f265d471eeb08c4da9d8eeac44b675f502eacd303521c17d5e3. 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/DEGY41220703.
Trio pathétique in d-Moll: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb4ca4990ffca6475126ff8052d77eb3f37b3c2a991a6cf9dc70b4b709db52c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEGY41220701.
Trio pathétique in d-Moll: II. Scherzo-Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b012733185960450a64411717102b256ff2eeb9b275f7b3824032c23dd8a4. 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/DEGY41220702.
33ème Festival International de Piano de La Roque d'Anthéron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fcf485d71c1b0fdbb004c9e77910d09ba59e7d0d3fb75072b43f249a6bcdd8. 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/FRU621121513.
Opera Without Words - The Most Famous Overtures, Preludes, and Interludes in Opera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad81828a0efded79a8485bd1479480984f4d0486e31b1fae3ab5e95aa7df6bdd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKI199297004.
Glinka: The Lark (L'Alouette, arr. Mily Balkirev) - Live
Rachmaninoff Live – The Piano Concertos & The Paganini Rhapsody
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b856659a0c97d87bf81e35d2894ad49997418b6846c8c432da5adbd14fc831. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/DEU901502492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239ed93959487e43031a43621d3479aaac8a51ea682b3e8a0ff0814f8bd27a7c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBCFU0600367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0bfd375267fe897cc61d075026ff9852c3214e357527c38d26fc349099e2f0. 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/SEAEW1444020.