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 0x83c0afb0e4a2ad7b74b8961b3b35ef9bd41802412f130ca0afab0448baf42582. 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/7b5441c6-030c-4baa-a9bc-8d58cb83e18b.json and https://artists.proofprofile.net/proofs/artist/7b5441c6-030c-4baa-a9bc-8d58cb83e18b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tomaree: An Ancient Summit (Original Soundtrack Album)
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 0x391c141624042792e009f3f7bd27fd980a6feaf30a919d3589150d49167ba211. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE5751862395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fb19117860ff61173b5f86f60b16f875a04315ac047c4d08302a55bad52112. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/SE5751862397.
The Awakening (Original Soundtrack Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d2a6a002957aabdd7f9723dd5f6b94625647171899522260b4b157183965cb. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/SE5751804960.
Blind Love (Original Short Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b968ebe4517a9882054cddc8fc9d074cbee3088912d74350d5d338006523a89. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZFYY1902865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad63d53f7ac7359f15a1c49a546aedbd1cbe7eeae06ce3e899eb42225444b5d7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZFYY1902867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872b528bbf1a3615d02670c620ede8644115e9a43eee9d69cd0bc36870140a78. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZFYY1902868.
State of Mind (Original Short Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb916ab17adced889296524ad1ae1a2ab74abf075b617b509cf0adb121354b27f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN91905345.
It's a Bittersweet Life (Original Short Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b4fc06cef3c7ccf1d896e0839ea8eae9aa0567871f372a05d5f3e7befbd7f5. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZHNB1950687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc19cb0f7526838ab1eba103932f72a71b9a683d06597d65763919f76d42605. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHNB1950688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7ec4647094bc3fdb357f9412be898b72e4ced64db2c4603da4816b991dfaaa. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZHNB1950689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf1f67bce6f15184d66360ac7c3a0509436c2cdfe0079945adc03d267bcd367. 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/QZHNB1950690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318d56d429e1e7eac0d1a9deb383ef306ef72a032334a80d820e3e58bf45eb0a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZHNB1950691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6fedb295c319eee6606e16aeb6e352f85cc51042adabbd628326a1bb9a94c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHNB1950692.
Silent Waters (Original Documentary Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05594b909f205a1c9407ddd398280c98f67c00a7b3786c0f4f6e8e4b49e3c4f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWS2054692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8276150d94f18d6ba6f0c148a1cf45049904cb4040828ec56b40df8da4a5ded6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM24S2105348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507055a2caa70aed6d4595a2c7f8fa4a0e0e2a42af61536f5f93ae00f0189be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2105346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fb05a2a36bc20f0991b50d11f0af47826ffdafa1b7ffd55a7f874bea8aa734. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2105345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32b01319f3b585544f0cc08b3654839003642196df711bb03aa63f2793a62fe. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USLZJ2278626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715635a50fe81709c36f7cbdc3b24ad423b1dcfc211f75a539192857f86d354d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ2278666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408db647fa49dfc7da1bc2afb746ab8e58435b37d570b7803a252f4b2638619e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USLZJ2278671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d8654f9226fcd249d831ec98b6778ac6430e01eabc5daf7ec3597cb88fc3c. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/USLZJ2278655.
Beat (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a3e35fac24f39df07920987429edd304fa775dee242b3e61c2e9c0008a4e0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBRKQ2231463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9624c54239f7bcee5356e360ea245574fb4b7fbd27d6b675981e16913567735. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USLZJ2372638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547caf4edcbe6ff1f3e963975e1499d7b134a9117cba189f27fdd3588dd6e3e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBRKQ2378719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6693bdfb77acf42e6d9fa66c5b18ef4b7dabef5bc425d470e31fb9cab3a663. 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/QM6N22461138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e120597b0695c87432ce54092178520033aba3712f05a00e32ac625f613f1. 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/QM6N22461141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25b60b603647de62e0c3d8716783f3071c07d32af6a8958926995a170a036b8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6N22461140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e120597b0695c87432ce54092178520033aba3712f05a00e32ac625f613f1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM6N22461141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c251183aa6c783e52170f2a076ca0c482f357b4e5defcdd55badebe7bf9518. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/QM6N22461142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959ab735a04c55933fe31b24c311abb9a1a9ac2d656467db4d8281d5c68b0301. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6N22461145.
The Promise (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b1fb57b812ead58e8ce2e2d32d1bd8abf41e3f7faa887e53722e088b9ab4f5. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZWV32442488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1289f07f17665e0eb14f75d5c964cdc19cbddc602b185bba4837513c04cecf2e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZWV32442494.
Marbles and Bullets (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fb48bcd33cd83ba56328e938a8c8fa232faa2c341b9e0c7017ee6178251fb5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBWUL2505687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020e80b357f6dedc924128bbc512d5c066ec99b74c1450b391eb5f1e8d13c706. 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/QM6P42444381.