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 0x4e5bf2b6bca4d2fb082f53f955f88695948d280e6291471df32f9690b5878a5a. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82a37ddf-41c8-4faf-a9c6-0ee2a2e178b3.json and https://artists.proofprofile.net/proofs/artist/82a37ddf-41c8-4faf-a9c6-0ee2a2e178b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Contrasts: From the 1960s back to the 1920s - Vol. 2
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 0xe4516286492cb78f7d4b2322d632d59625f6c6ba2a89af4b08bffb308b235c2d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CH6631452301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c080a5150a11b21a698686f9b2cee967baf610f448ec5d46563f5c58c41ba1. 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/CH6631452302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0537e956c09600a2f34c73432a26b120322a0f58688b0f1c6f722e695d6c2ec5. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CH6631452303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0562eca46da5d79da4ef65bcad5b48b5fda994edd333767daba82a826bedb84a. 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/CH6631452304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e82f64e3c28f4d8df8749577255add163c01e52bd2719602d516b8e8287519. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CH6631452305.
Nobody loves you like I do (From the operetta 'Paganini')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6119242daa24e4d985699f93c08ecba13e3272175fb93caf2186399be5675e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CH6631452307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178d2ba6ed4a09a424aa9c7eca94c23c17b959e9f256a4680bcf9d0143a52486. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH6631452308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609fff4e10c24c75f6365605d7976ecb80a53dae525d7b0bbe7ecfc0d6352f1a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CH6631452311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41f50da21e4b975587f5351e17092e638eff1f2852be3d83a56d1da4c6e370b. 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/CH6631452312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401606443e07712646c2593f973635f47422635ec08ff2625f7fa0839e2f1922. 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/CH6631452313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6f36ef8a15f2d95d8ddec2b78b77327ee49be6cc9f715e1cc2ee2324188a38. 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/CH6631452322.
The Golden Age of Light Music: Bright Lights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616d0aa57973c1d1c3e43438445bb2d4d6bfd5bdf65f89ccc7bcf7b3add55606. 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/CH6631351201.
The Golden Age of Light Music: Motorway: Production Music of the 1960s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e805c2fa55b747577291b5e0e0a2dbc1cbd0bf61eb1b3d7637d8d13148aa94. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6631552601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4cee45f5571e3bc5d2e1d86a413b286d1595ff9f5acaf3c1d884be7631cbb4. 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/CH6631552602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd000b917113450fd972eb51e4c6ec02fa88fd741882025cbd4c388f8af2dc7c6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CH6631552603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed1ebb1cba8c946fa4a78c388bbe2268feeae9389d815551baf5b25271b5a16. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH6631552604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e9dad88d08b38b51b406aba58318bdc8538b733310b789161a1a9f99f07b9a. 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/CH6631552605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d74ca976ac07963b5ba5b1fa20a2203202a959416577f01d09050da8e10c7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH6631552606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9147201d83c71717dc7a5300dac9566317fbf052a1c5fbb4390188f25e01e6c4. 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/CH6631552607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e955b551729101e04dadb76e28ed954d4d9502432269548b5ec94d4c07768e. 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/CH6631552608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44df0dcdabd2dbba088d808b193a57ad4f8ff44738a7c8927615f0863d385e3. 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/CH6631552609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a48cbacbd2e939c4c7b37a4738ff9949e07178e85bd49b18a735f45bcae5f2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6631552610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a2e8b8e541bd8c6affa8eaa1c0e0f303081b7a949b4cbd54b9e1d255381da. 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/CH6631552611.
Tales of Nature Suite (Introduction & Finale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa6f2c6bc9dc8aa38d9d16bf1c7cb895b1c6459368e64fdd9815e53ec0da0b0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CH6631552612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1951eea4ba420f4aaeb50e4397e5a7f38f0146585cb445059881793f1f46eac0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH6631552613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897ac710631c4ad8542588d1b9cb42514376fffa51bd2ed9e4a9f12a8014f23. 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/CH6631552614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da6b9a435318b5843c3d20e34b748b73204b1310af05b0282de981aa9b0471. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH6631552615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2b5e6e87711cacaef0d1c36387a61944a98b2ad89335f0b0d8991a147f53cd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CH6631552616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad8560e2fb5510409a06d8f5f187f8af16ec83743184fba5bb9e22f8791d0f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/CH6631552617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917a9764010f6c31eb8a119ad4c41aa1c5caea3b3cf6c7c35d9d2279722df171. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH6631552618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8756a63cc95f10299ef351026815ab13897f2fd309f0f2f3368d1f4f427b9c59. 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/CH6631552619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0535c89c50fcb76f92acd45a4db7828dbda34829180511df3ba646b5e992259d. 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/CH6631552620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda750bca6e99c79369fe6cb4eaaa641d6c3ca50c292585eb6f72ae5ce87eab52. 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/CH6631552623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24b1fc7cde43a6ab08446d2b01f2563e9c9b281e5f203e1182f70a71b856091. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CH6631552624.