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 0x341e9677b30cad54cf9b9d8fb2b3d65c7a4fd97e7e260137d3c6be3342afb826. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39044ab1-be8f-4f65-82ef-25c507fe88cb.json and https://artists.proofprofile.net/proofs/artist/39044ab1-be8f-4f65-82ef-25c507fe88cb.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 0xd20b68afc3a027d275b6e0043de45f83486e79e2e9b790bc4d20e8d521056da2. 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/USNE90803002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23708983d7500ce98973b0d966d9c319aa06b37af75934fe5268581285ff1661. 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/USNE90803003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4f6aa75f52e2437ddbddf5d4de4a61cb4b42adf2d0ded22d52eefe2b610ddb. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USNE90803004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea8860a276d185e67838d6803d81708a84cb2e7139ad9c98f9c7db817163bb5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USNE90803005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1570d0ffb536f4e98aba9fd5f50f32d216f996fc39478de7b2e650d0e7a39b26. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USNE90803011.
Cincinnati Wind Symphony: Made in America
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71141aa4af7372e625a4e9ef07d45015dd08d61e2b50d9ee551544c9a0f847e. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USNE90805104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eec5e54d2c0a3c370100241ad413007d28acc08ebc724769950241e0ba6edf0. 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/USNE90805105.
Cincinnati Wind Symphony: American Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe459ef40e7fc101d56c2b524ab105c10fd51215c597b995933e8afec00c79ad7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USNE90805804.
Suite francaise, Op. 248: III. Ile de France
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff644efd0d76b999e5efa2b433298cc03c9ef362a68572b1fb972198f5d733d. 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/USNE90805805.
Cincinnati Wind Symphony: Songs and Dances
Adams & Gershwin: Works for Piano & Wind Band
American Salute (arr. for wind orchestra)
Cincinnati Wind Symphony: American Variations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce83911b1b751771a5fd31a729793421bde6a90b58ea377fa8deebaacc78d150. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USNE90806001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e9534e13aa45a2c1ea8c3e2bdee8622ac8ecd89265d50103be5d41e9ecb38c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USNE90806002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf94b1a43ad4dee568e653a37427045b1d2c57981ee90ab3b853d928309c1dbb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USNE90806003.
Suite of Old American Dances: I. Cake Walk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4c4f7c4356c4527509cb197bd5a238b82c14ede1f154cfd392eaa621d46267. 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/USNE90806007.
Suite of Old American Dances: II. Schottische
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacac1858a08e54a7e8743f724d4eb8b8900736922014c2d16b913f9fbc51c1bd. 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/USNE90806008.
Suite of Old American Dances: III. Western One-Step
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6b69054d0476aee8324c9a380e5e43801b2a99771697b64306f76f2e0955f. 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/USNE90806009.
Suite of Old American Dances: IV. Wallflower Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9feada6db01d8a9e79e0440751cbffa0bd16135e511ceb3706c4b0785ebab. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USNE90806010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be62ed076ba0a5dc79434988f9cfbb24b19173cf2adfe8e1d63cbfac803dd9e. 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/USNE90806011.