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 0x0425fee63e35831a3cef108a1f35330ae1888bf15acd26754914beda837396a1. 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/2b01e970-08bc-4f0e-8feb-93f2cb85ee50.json and https://artists.proofprofile.net/proofs/artist/2b01e970-08bc-4f0e-8feb-93f2cb85ee50.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 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 0xc9233a4f640867f1156ada98543a9be5182291f2765c26c954ab85b32961ec5f. 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/ITS782000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dea83a8b8fac94f7d6d62ca174a568f0a260f2c176ee509c58482088437ed3. 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/ITS782000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679f7b75c9df7e924f6104c40b4643082316489725cfe06abad7b25a72ece620. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITS782000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af31aef0f488fc1c3bc63ffd52d3e27a3da47a6c591aab8257b6c7e5cc0eb6e. 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/ITS782000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf48825852b922a9c4547f3d829317b015b08d6e2baed1c2106a934c9ff657b. 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/ITS782000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9769f491b8faad23c689c7dad87a221a75c23c0e452436ba941be69eb4050. 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/ITS782000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86054a016b08fc57a2e7d6e62ec022d3e84c9519dd95db0f6a93ff45aa87b7d2. 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/ITS782000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc948dcd018811b1cd439d15f685ae8290b29bd51de6b4a9f0d5f6e5ca335212. 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/ITS782000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e9725b5463a33c7875c7ba462465e94ec4c4b60dd7dfa3cc2faf4f23b5cd16. 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/ITS782000036.
Sleep Peacefully Vol.5 : Modern Piano for Sleep
Sleep Peacefully Vol.4 : Modern Piano for Sleep
Piano and Brain : Modern and Contemporary Classical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeae686d7c2a1ac6d048d536120dfa85e682f68a21fa1ab8d9b3cae8efcd301. 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/ITS782000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358650e687c0e045fff12cc31412426ca6a6ff5d5d69924f5f9eb609b404f985. 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/ITS781702337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86054a016b08fc57a2e7d6e62ec022d3e84c9519dd95db0f6a93ff45aa87b7d2. 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/ITS782000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114edc30d77d2f4723a1515275beb202f2734fb20864b13fc799d27cd43c558a. 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/ITS781901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd16a05cf74949e50bc59cee011d8cd066138aaa3d4f23c6069761eb9731e92a. 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/ITS782401502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f01908100dde6625883aa8d56e9d8954f6e55e265123f2adde158a6ef7b17. 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/ITS782401275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d0225d8ba40d8f7d96a70ba071fbe1dfd6a499d8da0b243794a051e47d9148. 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/ITS782401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6c1fb0ef4796f9c191838ebdfbd0c7c3741b37a527c85ab467c5464af18353. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:23Z), 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/ITS782400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d006209d20779645c0e1845f90fddaeaba49cd5ad02029ad964c6d3cf8e7bc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ITS782400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb879e48efbcbb11ccd2467bbfea29dfbf15f739b6a9f0c83b5ede0d3f41fd6. 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/ITS782400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ea7fbfef3e43b837e17855c8ff7a34067803e38a6824d3166e1b2c637f576f. 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/ITS782400004.
Taste of Piano Vol.4 : Pianists Today Playing with Emotions (peaceful piano music, relaxing piano songs)
Piano Mood Series Vol.5 (peaceful and relaxing instrumental piano music – no lyrics)