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 0xdac20e1c4aba1e88dba9d411322b56f2badf4fec307da333e5040e0a0cc0ff08. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24f016fa-dde5-4393-8c1c-056b780d8f40.json and https://artists.proofprofile.net/proofs/artist/24f016fa-dde5-4393-8c1c-056b780d8f40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Recital: Glazier, Richard - Wild, E. / Gershwin, G.
7 Virtuoso Etudes after Gershwin: No. 5. Somebody Loves Me
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 0x7042e783647a8e7dbaaa18bcd8d7de7120cd06441542b8f9551a3710a4e147d8. 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/US8270910469.
Strike up the Band: Meadow Serenade (arr. for piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081a1f06e8544126f662c04b886cc71e5747a983d53c371a76cfd2300eadd2f. 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/US8270910471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b68975a2d900e79ffa6df8d7e003633de98545a008783cc26d7b5e3998050b. 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/US8270910475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaca3923c8d555180c26f017ab1437935083248ef0fd98a36479fd5b3087f73. 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/US8270910481.
7 Virtuoso Etudes after Gershwin: No. 4. Embraceable You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de64f904e9e4826e817a3ced54ad226cb9df9cc81f67f370886e37f4e338f49. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US8270910468.
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
Of Thee I sing, Act II: Jilted I'm about to be a mother (arr. for piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330a36928266c375cfb605fed39946ad5bcebe6da016fdd0095d0379c3765996. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US8270910470.
The Goldwyn Follies: Love Walked In (arr. P. Grainger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4de4f98d679beafec8851c8f26f1ddc5226bd1f32280d5901d7de56ebb63b3. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/US8270910472.
Lady, be Good!: The Man I Love (arr. P. Grainger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2978d3557f4be3480931376531e882136afe561532d095df04d352b282e7e393. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/US8270910473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f4097baae6978a8f9ec1243da3d08a70dd3d7a0856637b39a5094869fb53b1. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US8270910474.
3 Preludes: No. 2 in C-Sharp Minor: Andante con moto e poco rubato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e49c1a78586c4ca1605f398c6455fcddfccbb196e24fb8045cd94702b0906e. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US8270910477.
3 Preludes: No. 3 in E-Flat Minor: Allegro ben ritmato e deciso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841338f45fd205c43b626a16ddef1d0d89a76ce48219731c704d933ae834c246. 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/US8270910478.