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 0x424c3ac4b1701302aa5adcf9cdd7f0586f8eab623d58eacb6cb4bc731d81ab82. 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/9286a0d2-58bb-400a-b66e-2d3bef395059.json and https://artists.proofprofile.net/proofs/artist/9286a0d2-58bb-400a-b66e-2d3bef395059.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 0x763f64f6116528cadfcaa6e25af21e9b35564b65d98fa8444a464edfafd4a1bf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USLR59900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f15798a25975df4e1954ec1d00dba2022ee82f5fcf63f8e2e3ec4cf7ad28a8. 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/USLR59900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314fcd96748c74e1d4fabb594723401076b12d44ea6e7b499081c660f5e0e03. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USLR59900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4751562be220956f8982f9cb05d5bc656fb6f122ad76dea6ffa5999fe2b76. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USLR59900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1fba31235b602fa7a0be135f957289b78d4c183421290a0d7ac41a868d30ff. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USLR59900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea25ce849cbdbf96c1e8eda774a736eb1e67bc61b6c1e426cb180b30e78ef22f. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USLR59900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491fda85fd7d86ad339652e6ec314334d10a048cdb6d1879aae37544f4a0ed9f. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/USLR59900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034d9ccad0ea2d78d744fb01e9f7176ad9d350ee0fe2c9f9f6cc745cb6a5a423. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USLR59900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054be2ff019583ef94aa2ad64842891ac3c15cbf81732670a327f4137c144205. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USUYG1004472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88421033f410e6c5daf811ebc1c7280e8e5f1594bba1b067b64bb618820533e9. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USUYG1004475.
Sorry Seems to be the Hardest Word (Piano Instrumental)
Propuesta Indecente (Piano Instrumental)
Bridge Over Troubled Water (Piano Instrumental)
Killing Me Softly with His Song (Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769d05eb3a8c14e5370234a3ff9425dcee5d773969fa9b79f00417993684e2e. 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/FR8GV1709150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb195042fcbec717ab4aa31774713899f994d6b89a11603f2d7ad95d9fee91a88. 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/USGUM0910143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769d05eb3a8c14e5370234a3ff9425dcee5d773969fa9b79f00417993684e2e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR8GV1709150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9094e081cc3fb3f12ca67e195b2a50bfe344f09a39265c12ce9cafc90107e61c. 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/USBAE1302538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c189367971c8ec881839aac1066cc30010b0285c8bc723ad5bbcad23ff9b959. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBEPM2101714.
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 0x3be516c2a37d5643b96ca3d1ffb7c44728dd6489dbca972ca992ade8656c03b5. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US77A1100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfb3e9b4fd3e4a964bb9a53b081ce4c76158cec855dab9d0ff7a4aa1c5d11de. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEU231502691.