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 0xb6fcafd4c7749e4b28c38b9939c7b272cfe1740ea381e6c839d5bd3adc0ee23b. 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/8c3ec48f-7566-4c1f-b57b-29d8ba95be47.json and https://artists.proofprofile.net/proofs/artist/8c3ec48f-7566-4c1f-b57b-29d8ba95be47.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 0x7ba3892e4fc10bb473262743836db27bc45b1cfc84fe873b0a94162475be6ce6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USL4R2163572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e31547d4b624ba28e484a79e4044f57a7d633242f3576b28d6174d3d8f2f643. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USL4R2163573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317977321111e5fdd5c3a934959cd0bc4aee06e8bc5e562d305c4eb2310d066a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USL4R2163574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe13a01f0f97e5ac950e66d2881a1311bb9e1c8cd1448b171a0017f51af147b. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USL4R2163575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1796573b1982db2e808449c8ce1d46361af13957f180b9a8719bfb4a95936e56. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USL4R2163577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed334b4781fee5301a42021f5d9932253a6bb8b48a84217986202c6389c64a1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USL4R2163579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb419d833b17a3937abf65336609015993c3e033803c1c6c57275cc8741866fa8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4R2163584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b92e3f784f5a43589b72839bf07f05f17e28a9f42506da710a6fba181be0ee. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USL4R2163585.
Soft Piano Originals for a Relaxing Afternoon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428eb5c44ec29f8ca753798498ea227bc9b52ac346661930a8996db3cc6e1eab. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USCGJ2214354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c446adca8b09a2ca2c6a8ca2f7826a7767bc65710ab240e1d345cd32c812c3e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USCGJ2214356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d78c9f9eec740185242323219adbf55cbb36acc48b81cdf21e0f8c4c9023bbe. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGJ2214361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc3909bc3be42626acfac09d5e3577bb1b121c8be27be2194b19ab9ac0aa61c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/USCGJ2214363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7047c70b8af443c087b4f184dbd886c293607f5b83988c6f6707555604ebaf9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ2214365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa455296bade392526c4e5541e6eb71f2f7ecfdf73959abc710d24ccfff7af71e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USCGJ2214366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761ca362449b864bbc2836ece0eaa719c59e6f20f5d91e8891b00e40c099f9e5. 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/USCGJ2246606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fedbd6d59642b03f679a86e2d160be131c08bce80547d7a6650cf1d37ce93e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ2246614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8085d517c6b4b2fc6ca5335f981b1e42b6061188e741a8babe1ae3ae6983cc4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDY42249549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b0b71c722a4660c03038c07a9152a4b3ab44fcdc6f56338f45c2e7c099c4c8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY42249559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb894dcee2e60f7c3b7b56aae80672e9d7d0b3bafb551afdda3ec9cbdc27900d8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USDY42249560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c73196eda4e32293c9d02e6a7cad30f97ab1635660fe1f0a0025896073e801. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USHM82248998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8270df06d28464ce69001fab078cf6193684c798f6044cde216fdc2a75b24f4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM82249003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4a1765c2eaab8a71ad856d72e80f9381ae6e7b802850674f8f350ebaa7910. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USHM82249005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41706d08b9011fba6cd10499090749239686e6b9607fd29387b237ec39bfa906. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM82249009.
Background Piano to Relieve Stress and Anxiety
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3a5c0f0ae8e9e340cbb93d6db3dbe9720221008af9028cdb4d16bc2c635885. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GBPS85472856.
Droplets Playground: Piano Whispers for Little Ears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ddc91d295efcc4b958051a202eba648accc8e665444d333fef1c19a71d835. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USDY42509602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ed9546e83ec88690fb696ff3ada49dc8f7582dcd7fab7be438fe317f41cc1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USDY42509603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1f476a79cdca9406cb0afa3a92b348136e3d33e83bdfb993b698c92627e085. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USDY42509604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619fbf096ecbe2503f41f71d4780eb30221b31f3136749c4a352922a01938ba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDY42509605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8af7d0c94859860e717749e15966c999118c047a343becc84a82f0f65388a39. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USDY42509606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde1194da5ffc29f60eda71bac7ea5cfb8e57a7460257cf8238596b3266000a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDY42509607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d686dc09336754c3acc1ed0c60072536f7a654f8d0ed09cf1f7d525fbcc37. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42509608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5575eac56faf6161434f363dcaf2e61ef2f3d1b573729601880551fdaf2235. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDY42509609.
Make You Feel My Love (Instrumental Piano Version)
everything i wanted (Instrumental Piano Version)