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 0xdc805a1979985c632bcb74859fce762629591a96cd0b36dd812ffdcad7589331. 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/f66f55b7-1c99-4032-b5f3-07c8400aa33e.json and https://artists.proofprofile.net/proofs/artist/f66f55b7-1c99-4032-b5f3-07c8400aa33e.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 0x1e41c616ba2ef295a2132bd5720e7abb452a7a0a2be7d21c2085cc70cf2d9ae4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWC010401291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b2001afb6dabc12872d58a54828fb5f79c32f42e18d2d11e6b652110bd1c39. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TWC010302230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf442a2263901dce8ea4da3b758db8a74cbc1781b74d080d2487ca17cce8b6c7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:55Z), 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/TWC010401371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde87b4e27eae3bc838adde9519c5c8c97ae4299e353eb5b85c36e320a0d214a9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TWC010401381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fe8516e5207b5e92d6eb3b8c28edc2411ea5765de51591c2f60861034db3eb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TWC011100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63476437c371bc2aa8b628ea2a274b21c49b84c1cbebe943fbe6c61683690f22. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TWC011100481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42b362509f62addd53a578d9da2377a670b1bf5c518698120407b65bb654617. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:02:04Z), 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/TWC011100511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a3215abd3792233d2e675d1de0185d61039fffade1e985d91f3c9a7942c068. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TWC011100521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c23d1ef91ad78b666214e8f70a271948d831ebce660b64a8622d4766db63253. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TWC011100541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83402942e8706e44a50b5411a337c2f707ff060e93dcc215e77d943d99345b87. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TWC011400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738938ae97cd5533d0814f80e54e7fae888b47477b0996fc427cb56a71953b4b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:09:58Z), 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/TWC011400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f17823e84f7b5e7664700fbe7b97c5f7587249b46e14f30143c1f50afaa5c7. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TWC011400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cb13676c37ff8820c4f8c3ae70c3bce08a53cb21130ecbbc31a5ec991529cb. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TWC011811631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270b2fefb177ca1c022354d8e36eaf21907fd48536bac4de113c590edfc8a12d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWC011811641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5a32a3a95511bf2d0d4de0bbd378d88695adebe08b0e6f8cc3f9bc8a6ab60a. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TWC011811651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eb82474af8828dd15123272a9f08f7b4ac88c097306637a43fcb6175180f74. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TWC011811671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d55b4b97bffaa833024ff36a1c51be609e028ba0ae6b3ad70b4a795979cdbe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWC011001041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba0430ddc0688221a3831e10ca8416ca554bedcecb3a0664c3dae7a333b5686. 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/TWC010402291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ededb9f782878cf6818638d5d48d31e73fb66174acf41e040eff5a1cc854d1. 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/TWC011200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938f14909a98177762d3c24073a838247c86c3a599c9bc6bf1fef24d4313ace1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:21:24Z), 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/TWC011200141.
LOHAS Yoga & Relaxation Stretching Music for Re-energizing or Exercise Warm-up/Cool-down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b322bec0d82af3efe1edf34ee51e3558d992d8ee2d5c6df085ca230ae0fc54a. 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/TWC010501601.
書店輕音樂 - 閱讀陪伴、放鬆聆聽、營造工作氛圍
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf51e038a91ba71a3d529b2e5075cb2764af56604c9b2dd1a8f97ef2c84969a3. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:36:42Z), 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/TWC011100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f17823e84f7b5e7664700fbe7b97c5f7587249b46e14f30143c1f50afaa5c7. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:30:58Z), 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/TWC011400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d55b4b97bffaa833024ff36a1c51be609e028ba0ae6b3ad70b4a795979cdbe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWC011001041.
Vacation Music: Light Jazz Rhythm Played by Guitar, Flute and Drum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d55b4b97bffaa833024ff36a1c51be609e028ba0ae6b3ad70b4a795979cdbe. 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/TWC011001041.