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 0xc0573808caf43bc95f1423f0116be3bb085940572f819e426b432467d73de174. 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/f22e84d4-4b7a-4a66-93f1-4f982cfa268c.json and https://artists.proofprofile.net/proofs/artist/f22e84d4-4b7a-4a66-93f1-4f982cfa268c.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 0x8be1aec760157b38f2b4853fbe6efba987728d2fc223da93b3e676f7ce733a06. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ2205630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aaae704245447674058e4830034ba517e27552c1c7d533c69144707aa412f1. 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/BK4DA2301105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ac794a6b5e23d8b20480019f6327e011dd4bce4b6394d266119e03555b6211. 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/QZHZ32239918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da1b6180601de21afe459d7bddee87fdf7a5dafa8348453c8c753b81f9ae2fa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJY2352394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eda27485a69510879073db54348551666d06afaaff245033a2e00a17785de50. 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/QZ5AB2358611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc04977299257133e27faf66622ffa638e9e46f40fc5cfe4dc7b970c1cc0c7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2343355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f34ddd1b7f664a6b6cfbddb41ba8993a54b13a11e813a6520a72c96a147bb0. 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/QZHZ52228792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495411cae206cc9041daf9564c7b28a03d073011d5a453b385f8845be9169d98. 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/QZNJY2114532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e733fd5d958715185918affe0809a8d2a1fb092cdc395809a219fcba5690b9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZNJW2178515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9034946648a53075bc7de41b5f2bdf02325e55e89e5e1f6c046abd8bbf269cf5. 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/QZK6L2124898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3ca9ecd8529f6b79811142e917c7def54b0503282b3aedc870ec99aa0430f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ32010164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a0f7d99c61ba7b4eac97338c2ce708e1950a29f2cd2cb2ca292c060c4b7199. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME1919677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5f5e35869b5cc3a3b9dc0287df95512b11d8f5c1a96f10a73b48cf0bbaa088. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJW2300366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91d64432f1fdb53e8534cab110bf34a3a83c8ab963f614c1d8c651bb05d84fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEK1944737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd278e1372701ce7edfd6cb4beacbf4806e37120907975e9aed2ce05ea44043c. 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/BK4DA2402451.
Toco el Cielo (Official Remix) [feat. Yilberking]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0334125b01698699a6d023ae2c2331332b5ff9108fca7bb3944b63795ad465c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ51906121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aaae704245447674058e4830034ba517e27552c1c7d533c69144707aa412f1. 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/BK4DA2301105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8938b2565a93e6f5cc81ca1834386fee2b76abc78ed604d4c6b6a971d021b58d. 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/QZNWU2156923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b362e9304d6c074a1967ed6238af9cdfa3818f7239a0ff6a9302ecaf44263d. 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/USCGH2269897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2179ee8275c7e109017d4cddeb20a7ae310051d5232f92533d357597c19fe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6L2068779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6535b2130a04113b4445d270160c4238727b845163e0b10645dfad2a69ccb09b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92044712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c2fbdab11883dccdfe17f5741d791763ac5260a5e7e1cf23c67e0bd1a8a49. 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/USL4R2162083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b0a0a9950a081a481eabda16efe4c27e94e66bf306e6d0c37063d7eed8e861. 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/QMBZ92253278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4a7510a8f4b69dbf16fdc3bad5c123a483213eb853293fcbad228c95273c3f. 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/QZNWW2031906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf5ad5064b0f6990ced8e7030070e642a16222c35901c28230fc82c6ef8961e. 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/US7VG2502593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b77d2b29d2713449b1fc3bdd4126d4c75e71c2f6f55f10f538c465b207213. 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/US7VG2502595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145bea96ed87e851ff01facea6e4312750458fc503ae9700b0c5f29b4f0459e. 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/US7VG2502599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2e13f24872d83cfda4de8a052946be2588a18ccf84833b5193d16113ea0272. 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/QZNJW2457139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e91b6e6a511ca23bfa8f654207f1bb944e85f831103ba2fe6255473358181c. 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/QZGLM2034283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5597d08e59041a4ecd6a71af30d68c94a41027b48f763c25afee71e1193f7407. 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/CH6541641054.