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 0xa7dff83c0e05d23cf5d880cb99dd0ff96a34a59851460aa472dbacf138f493a8. 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/5df875f2-eadf-49b5-914f-d58bb9e60405.json and https://artists.proofprofile.net/proofs/artist/5df875f2-eadf-49b5-914f-d58bb9e60405.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Childhood Memories
Roger Roger And His Champs Elysees Orchestra
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 0x27dc0192e34638b88642712c182a3dd86b1e80ff5ab052021d5ce16b4aa1e945. 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/CH6630652506.
The Golden Age of Light Music: A Trip to the Library
The Golden Age of Light Music: Highdays and Holidays
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dda1be6664996ebee347769486694b46fdfd1fe627db36e661fe73160015f3. 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/USV291348905.
The Golden Age of Light Music: From the Vintage Vaults
Piano Sonata No. 11 in A Major, K. 331: III. Rondo Alla Turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d15fb8162a08bd4bf7f36eda10b349912ae73740b2835ec3f248cee3160e1e. 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/USRDG0112451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed19c09454b19ca86c9b76cc8761b2b9cb3d9a57f3ef345194e3d2f7bacf8a9. 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/USZDG0800242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda80bb9db546790724d8dce9a30b1ecf8c322e2c9788558560825b6f507b6e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA580700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb49d536299db3882805aabececd261a0a0320515c1f16a162d4d790d74fc20. 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/USRDG0112738.
The Planets, Op. 32: I. Mars "The Bringer Of War"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d20291f067112c5db99063eaff93698442e011c3f97e31144e87a05a2fd3d77. 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/CAM460770217.
The Golden Age of Light Music: Ça C'est Paris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78adaee097ea017b879fe19966400dbcfcece752df7dfce50242ea510ad0b03a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6631350710.
The Most Essential Classical Music from France
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10370b20e010cdee03eb3f64e24b20962bc93009a289d86396ef1257595ca75b. 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/AUV401470964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf3712a631eeb61fc2fcbd5f02c9856a98c095bbf960bca2de7c867bf79ddf0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUV401470965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecb45e0422fad970fbbcc63f7eaba67992d86b5ea44bd93c5f427f147021f96. 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/AUV401470966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e416f76fef3278b33e1effc36146f6ae630809de48a01969fb0c9b6a3f636. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/AUV401470967.
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 0x127d56294341187f8f48a471c0f6fa31be6397b30f83e680aa63fbbe65afb88f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/AUV401470969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5429ea5b31eb162cbeafe8a0b5510dbb18eee4ab83c4f91043229ae18f0ce. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/AUV401470971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b11bf04d155add195e0d0e78391d25a1378efbbf4b34c6a188aabfc843b7a32. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/AUV401470972.
Air On A G String (from Orchestral Suite No.3 BVW.1068)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d56937d9fb89307ca32cbfbdf30aecea645cc4e908fc2501e9c0308ef694ed. 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/AUV401448431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61c54a3dec4918fa5ba72786de852d54de1fb6359d0e9972f898206f05a17c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLGL1272146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72141f865ebd47f155e7dd33ece020ccd3b148381b3aaa9d13c0db174e4a54d0. 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/GBLGL1272147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95391a8a7c1c19806924740c0e1348cd5ff77554871f1d1605c86eb5836a0a51. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBLGL1272145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beea8282801dc0af84449f974c90c0fca3d5b5464214338a424be15e59a4e4d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUV401448502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab10488f0c720658234d21fb6a64ddabec4c755b7d44c49e91b1c5b1cb547eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUV401448505.
The Nutcracker Suite Op.71a: Valse des Fleurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f009411b713f14ac48ca5affc18aaf2422f6c5c7ba4d52f86969d1b6849b61b. 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/AUV401448501.