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 0x20d5fe3133143bc8e7e9b42bf21a6df37f467daa0bc8b14fbb96f9ec84437952. 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/6c47619a-e2c6-44c5-b6f4-7ea5bd9b6c64.json and https://artists.proofprofile.net/proofs/artist/6c47619a-e2c6-44c5-b6f4-7ea5bd9b6c64.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 0x7dd366cc9b73ded13f2e4d58666e8b09ab238051df224ee2a52e1e28ca9d3223. 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/QM4TW2245655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c2b58dec2373be41c5dbd34b1c70b4ab8bbd002640b00b9bd631209b0dca8d. 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/QM6P42333061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ecffbce98a751a5374d14d42a2fa0cc63a56eccdf964a6e3fd100f7d3458b6. 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/QM6P42333062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c68963b7b12f39e27f7f2567619fd7238332fd77ae6a79b1eada9d808bc8fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P42333063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e6c2eb08680983635aae16dbcbde7b6939766215fb148017b9965f2a8504b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6P42333064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9465d973d6e607548d8ddd324dbd5be548cdc8893fdb9a667f51847b0ace79cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P42333065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd842f9969de80093c7bb4cc05337e8307e6803ca6ab2b70e654c98e4620c6eaa. 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/QM6P42333066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a02325045bdfca918132af45ca0c3acd39cf53fe587868bb40c10f53a31ea0f. 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/QM6P42333067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54e06b8202dbc0cc9376766780acf4513a4d2aa4d8078ecbf96f68d418f91c0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6P42333059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a4200e1a90e219903eaa0b4ba0c0e7fb2a96419dd0a51dc3d8b8af29cea518. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:53:15Z), 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/QM6P42333069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f611c017c2f13400df57ff1b5c60683d4868ffb437689736caf4f798fa6615d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITL561100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a766d9113040dbccc215687c75209aeb5500fd3c9204d81778c0c8e05dd09b8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITL561100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919af1f118641631cab0f9751bf401574509f04076a65559bca3e8febc494823. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITX480900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd366cc9b73ded13f2e4d58666e8b09ab238051df224ee2a52e1e28ca9d3223. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM4TW2245655.
Street Collection, Vol. 2 (2008 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ec0b728b90b143249f199c738f83b2667b9b83ccf9c947d90c085f3eae633f. 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/ITTVA1700082.