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 0xe12d6a38d94505612add5edc60310c6d743667f8440eeb0462edc04b352a5096. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d46ed267-9087-4d57-9efb-03b5229fd9a1.json and https://artists.proofprofile.net/proofs/artist/d46ed267-9087-4d57-9efb-03b5229fd9a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mendelssohn-Hensel, F.: Piano Sonatas in C and G minor
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 0xa6e7856f92a19279323cb2b4638935b5c1c523bc5d9bd04b47a716f4442b2edf. 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/HKI190903401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128fe80c23b576e861a45b1a687fc6467f372d09045bd92c564a0a6a278dc8f. 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/HKI190903411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4875acaaccdb73ea7ec490cc85d0b49a588c64c19d19921405655f9fd9e8d718. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:39:56Z), 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/HKI190903402.
Power to the Women: The Best of Female Classical Composers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983638838843d382e248b4b157128663b9906a080e54689b086b3769c8cd61e4. 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/HKI191090201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8013fe5add18f9683b6326f701fb03070495c89f1d69130fc5fdfc87ebb6dc53. 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/HKI199612801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eddfb5caa17a98b3feebce909369bf779f6f1f6173ba0ee1f4ff1ce716ce4ea. 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/HKI199295204.
Centrediscs 30 Years (Centredisques 30 Ans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec4928d287c3a33146af0bc3cc8e67ab596317d2e19d3c335a1e987b7e4aa15. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKI191904916.
No. 2, Wachet auf, ruft uns die Stimme [After J.S. Bach's BWV 645]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ae42b725f9f69db4cb44045a05c8d4e38159be02ff8328b0974a192c0739f5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPP592100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e56dcdae57dc5bde689fefcb5e040b9933aa6538c6ac9b58d6d6e16ddd3594. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/HKI199225719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35edb3f1b4ae94b5582455b7b14e5f6b5c9dff0dede0065882612849f0bb0ddb. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:36:03Z), 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/HKI190423201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624148cee5aa23e422b7a9bf6a25abfd7f9d31f9a1bab77fe43b7d2d8148ab55. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI191427114.
XIII. Le Cygne (the Swan) [arr. For piano solo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd4046702bf6b6c8e92b78d605dad8ca504f459a7a66a2f71eb800babc6c014. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI199295112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed804882ee5fce7b7d63c0794130c99cbfd663c0d6f562e2f926cca7760899. 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/HKI199298726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bc98fd686915466f911b7da4edadb5196ec02f3078e2f3ea928697e8ed950e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKI199951419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68891231c27450272ec073d41829db75d323cb8daad550b531fb15e6e0554df. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKI199247401.
No. 4, Songs My Mother Taught Me (Arr. P. Breiner for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b90d94ef0b471a1e2b1d93ead16362b41e5a9f78152aaffc41ac9b85653b9d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:25:16Z), 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/HKI192208332.
II. Tempo di minuetto con espressione e andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18b4b9a385ea9cf1f7ec415f7c96c972deac30fe98d211890b5e837cde90691. 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/HKI192109119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b1559cfa5e0c26b46b366dea38d2b26bb6641f6f013728629e874f77fc9c2. 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/HKI192031102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d26495dba255e138a6b4260402d03f2e20ceea59bad87557c7463235f59f044. 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/HKI192301610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe521d8cbf2d82adc1c94ca9889d57e78aa761a80b0d1d9082ccd0baeb6c12e0e. 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/HKI190052628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120ea269234d0f6fa328b81b773c68d80f3ff6f9219180c3337db376c5e19ef5. 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/HKI192009501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec298fcbde38428d22200a00ac42c7ef8da5ebb942ef1821321bcc77651ff1. 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/HKI192020018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e90e8e9e99c5d53a6b8cf8e1ae45f8e4b2f06ae046ca0149eca6211d63858. 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/HKI191318009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd89d16da838d61497e1717fc149dce5b02500d532bd307b7ecfddb3e7d267d. 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/HKI199241703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d852a139f69d01edad0e71d5dead4b91c7807d0fdb993cbc7a354029948ef1. 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/HKI199493116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb715fb73b208f2138fc6b9c3da2613354d2c051ca19210d5108cbfaffc06fa. 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/HKI199638514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f67c0ad754e78575712a38e2e2fc11c214494fd4453670469b36b465e362ec. 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/HKI191425006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca6c09544a8fe0fbc3238a94ae8f54e2489c88b1c1b39e8f203288a46367f06. 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/FIFGL9700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef18fb01a3007e80e8d136b47592c51c4e8cc86b347cdae0bd6ebbced44bb846. 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/HKI191031317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d35e1425062179ca9097d3e3a56d72cf93fb4a7b01561e3d134a2f2656cb720. 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/HKI191120812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68834b5b19460fd0ce992f42bf5ba5c9f78f37c2bc0cc92b74061ef0cb40494. 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/HKI192208102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7bc4f5ea920e93cb233f3902dea391bd110a5e88bd23857b0647d11443777. 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/HKI199746919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f6319bf1d6710404c161a1575314bffcc88f09c97d14e7ae107e23fdf94bec. 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/JPP591800107.
So You Want To Write A Fugue? (A Celebration of Glenn Gould)
Rolston, Shauna: Cello - This Is the Colour of My Dreams