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 0x794b4fbc393f00c1d0322779beb40f95276a099f79bbfb58758d577fdf78870d. 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/75b61739-021a-43b8-bc1e-0d418a4adac0.json and https://artists.proofprofile.net/proofs/artist/75b61739-021a-43b8-bc1e-0d418a4adac0.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 0x4800a8eb68e4b9cf01c1bbb9055dcefdf06667d6ea0931204ed0d39c2affec6e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DERT91610233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253a7677e6af7af201cff90aa2df2f01037fca5470d1f661d65af81680dffd1e. 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/DERT91610235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fa58603953e29990c43c5f3e19c90bb99ef9463589eb20a08e26844627c012. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DERT92010279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212feb8893531e56ab87dfd352e9040f28676dca61b4bda5d345749e8dfdc8a2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DERT91910251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44445903522c182d1b2c1689e49c3cc0ff0140bd0c4a8e7ceedbece429629508. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DERT92220309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78a4c9e14f1fb3a715504ef6b7a4d4346e3e76cbd833755f077d9361085afa1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USZXT2351959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a31a67d0d0d4ae7d4e30a96bc0bf5965b8edeac9b3036c3919e65be7f0627. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QM4TX2328136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225e4b09655aa26c92b966cb4cab3371f2e17bce41e8ad203022503410a5411. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2264289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98034d12600cb466a143c46e3b602664a20ce6e01400959f602c301b29159c72. 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/DERT92220307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ca3afa63b623a4b2813b4ed62eb942cd22e53ee147e246fda37729623d8dd5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USZXT2352096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25c2189fa19eb747c9cf26372d3f2513c0e60a89c76066b191f3ee65576f151. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USZXT2352515.
Mach mal Schau (based on "Becoming the Beatles" by NDR Kultur)
Twist & Laut (based on "Becoming the Beatles" by NDR Kultur)
Twist & Laut - based on "Becoming the Beatles" by NDR Kultur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9110e33e5e789c3711bda7833622033a9a01f8d9c1cc3a2056d0f8b9122e92. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USZXT2456111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9ff693c490cb1db599f6e4c28b51ff2d2823b4e6dcc569c125d2a6fb9c016e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USZXT2556788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcf8c39a9344455ba6caa60d56396f625c66535b5c71436f9bcc436b9863c82. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USZXT2456199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0fbd5c34e9b0f73f62ffec5d0e3a9671c703f5a849155f31afdce041a7817c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USZXT2556492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017e67592caa13150972371c927c18c3b725dd79b9b704334f47b511af82a43d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USZXT2557967.