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 0x16b8779def7d85fb5cc94b2799d23621967128e2d16add8da129dafd470cfff4. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaad9056-6fae-4cee-a475-6c82a214cb11.json and https://artists.proofprofile.net/proofs/artist/eaad9056-6fae-4cee-a475-6c82a214cb11.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 0xf3d0fcb2090ecca05de855995d58db8f8c82902dfb86761154a28f0752ebdddb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2340703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250aeb767ca24a6c9c217b3b15ea1b2defd621211a12523a5e68a0f801c64daf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2340704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c64230a6e5d5f920c02c2fc0ba0a116d380f1a7c3248850a1b41e9b07c8922. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2340705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a20ebf893480977c6fd03d2f18d6c3b7bae19097064c9cc0313bdee1f7063ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP2340706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce214925f8df313b327bde23ce728811606a11f90187f205c135488051016e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2340707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf22388bce51a6fe3799515755adeff7eed746252fe4f2e7e2a8df65e65d0856. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARL2202521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c8363ceea9e10d035a499b9dfde24e2b71a5a67db533f17cf73d05a2f8541. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2340708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b626156e00fd0a8e85766b0df068c3cecf5b2bd4a186324e6eb5a8c787db7b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2319345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce975f2ec406aa0c29296f39b36803ed36db5e4a09b54cbbe2503b370f176b21. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2340709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa2fd13952f9835f01cfd7017e34780602fed43d39a37d8b38a99bd5eba6dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2340710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2bdd6a930f55d69aa227a3ce8a2083eb93a443541beda2c4242ee4a4d27d2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP2340711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2ef4c5dc21b8383839b318375a74f37755f8e308772e5c30b66e3490490c1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2325936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00efe275a6452d6126913ed2d39b95b7f92c802cda070fc3763b90a8be07ab7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2340712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17a10ec8358c35d67b88bf33b32a63e50c4cc300bb58f274d8dce8afb9834c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92098952.
SD x Fumez The Engineer - Plugged In (Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c1e38ceb54869c2125a7addfd741fd9cc4f47be1ac4ec019518dba24a3d833. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1553421.
50 Most Relaxing Piano Pieces for Inner Calmness
50 Unforgettable Piano Songs for Complete Stress & Anxiety Relief
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f0eefba66b38dac9219474f9f237ea6e4554d231f4e542bfeaf50b8d3aa8db. 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/UKZVC2200455.
50 Essential Melodies for Quiet Listening and Relaxation
Relaxing Piano Melodies for Deep Work and Study Focus
Mendelssohn Lieder ohne Worte (Songs without Words), Book 1, Op. 19b No. 1 in E Major, Op.19-1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663b05c4d076534500065540d9cffa1f59663e0a02c3bbba8fbbc4579757826c. 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/UK6821713858.
Chopin 24 Preludes, Op. 28 No. 6 in B Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b40e620bc3e7dfc487392e3f9dd6412689bf94490386b03f8166313f2b27aa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UK6821713839.
50 Peaceful Piano Tracks for Reading and Concentration
Chopin 24 Preludes, Op. 28 No. 4 in E Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de6da27476191d0fb0cd09f6594734cf07c4fc72943b7a3957b49c587276059. 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/UK6821713838.
#2024 50 Tranquil Piano Tracks for Relaxation
Liszt Consolation No. 4 in D-Flat Major Quasi adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9adbc63445ab49c7ba6ee7b644c13542c2f2350572851b912bc53c6cf413085. 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/UK6821713851.
50 Soft Piano Songs for Quiet Listening and Complete Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b596a77596e1c2978275865a8c2a358e6a7a94a134385231418d80f4fb1238a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UK6821713842.
Schumann Fantasiestücke, Op. 12 III. Warum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6c19d032d2fe96cf54978c090967cb7ef675a67896fbd864fdeab760baf7c4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UK6821753384.
50 Piano Soundscapes for the Best Chillout
Schumann Fantasiestücke, Op. 12 I. Des Abends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9331d962e8f9161321266b4bb03299e36a0bb94c0f224702781373ac4d1be30. 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/UK6821753383.
Schumann Kinderszenen, Op. 15 XII. Kind im Einschlummern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea15aa40a254ab01158ae99b78675c02a0acf231f9ce25c7d195e9026ca26d1. 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/UK6821753388.
50 Peaceful Tracks for Pure Concentration
Liszt Liebestraum No. 2 in E-Flat Major, S. 541, No. 2 Notturno II. Seliger Tod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfdcbbd52ed0823db32dc799781c7d3e52d0711e0e54550286fc5cb1c02eab2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UK6821713852.
50 Soothing Piano Songs for Lovely Chillout Sessions
The Ultimate Sleep Compilation | Relaxation
Serene Sounds | Work and Study Focus and Relaxation
Comforting Music | Complete Stress Relief and Complete Relaxation
50 Unforgettable Piano Pieces to Promote Calm
50 Powerful Piano Songs for Deep Sleep & Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b9d1360214c3c85423d047d00669b345940a49c59d00f97e46fbca957af4ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCUW1900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66616a08166190c4f7b5c973d9d68dfccd0c142c5ce398120826c0a49dd2288. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBCUW1900110.
Hyperattention - Selected Dijital Works Vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224ff14be4365f625a5cb9434f52e0de3ec9dd86c35889e85a2d96c389a646b4. 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/UK8261900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d911e158c78105821d6d40a213aa7d63ce5203ee11023c59a4b63aedc9f67d7. 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/UK8261900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabc4c2364dc376741319713bdd27ac20647e723f5726e5df2e3d0e70647ccda. 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/UK8261900295.
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