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 0xe7919ddb67536e9d1c992fca71fda0ee98d47a6ea4659df18226803271e5307e. 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/46f3d756-5178-4a77-ab9f-04a6f2507cdf.json and https://artists.proofprofile.net/proofs/artist/46f3d756-5178-4a77-ab9f-04a6f2507cdf.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 0xa9926cda46928523c727608f913db85e0646e6a5a60ba9882d77c5aafed880cf. 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/ITL7T2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67625573d224d2f4094940fe86f0bc0f70acef41a7a02293775074611a551f. 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/ITL7T2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d69bb8a1034164d1856d808798943a3d1ca00bc79bb3e7154f3ba24728cd3. 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/ITL7T2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc0ff67b18248406f35820d3c0908fabdad9077e7c98a6bdc4a44f642710d7. 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/ITL7T2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94a47f0befa21562f891acacadee985d7756e2b96e394babf5aaf9a0e37361b. 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/ITL7T2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b076796bbf16e5391cc32f235df9ad393b0eef516b19728fc1107c3860e7900. 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/ITL7T2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca96dca18e3961cc5a339fecb4623e576a30e7d240a501a4b916e7cf92f35e. 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/ITL7T2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf523c756af3e9d752c07288368cae3ce289e7fdb84223f7332d699f8a3a1df. 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/ITL7T2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf155542b781e4fa197f4deae727e05d67368d4a1b8fdc9d881b564a016d0a910. 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/ITL7T2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31fd8c657f71dc5368d91b9efaaaa0ae677adda238a803d40bc115203c2d118. 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/ITP842000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34bbda56a5b32d96cfa0ded257eb4999b831d9d850fd3187f9b3e6a29cbf7cf. 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/ITP842000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebf093a5283d39bc6c4b3e0b5e2434c64ccd77c33a1d31729aac44f0db8f9bc. 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/ITP842000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5edb6906e61c66a8a840175abd3d584b51ff467538947a6cb3274a90f8d73d. 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/ITP841700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94017cd4ecb620933874fa9caf9975da6ef299e0055fce7f8fa9563f1e8d797c. 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/ITP841700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe411e04dd0431bd3f409d4eb2cf5c7c6124c4134580ec35ad146aa2db34e7e4e. 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/ITP841700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a546ab3c6005f4afcc5cd689e05f2ccd3e89d56c8d883e093b352d61244586f. 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/ITP841700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fdb0e4158baf1ca76fcb965befd7e0018aeac11dbb913adf738284efb429fc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITP841700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d6adfb8f33398602bcb78e9a282d103efe3a19689355ddbdacaffbfe7f92f3. 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/ITP841700206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66259317bc8c0fcd163fa91b2dd7f3bf42f9dae290cec9edf796bc24550a0c. 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/ITP841500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af93873d5dd112def86e56f94d1e28a15756c69c4d6b3f9ce92379417689584. 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/ITP841500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15636f9feb5232145461dab7494be83e50946a4c3c5a53736dfee59ccdd2c6aa. 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/ITP841500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cfbab7b8da75b3972f196d2468713f7217526fb3c53a5448d353f9916e1178. 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/IT2HQ2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94a47f0befa21562f891acacadee985d7756e2b96e394babf5aaf9a0e37361b. 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/ITL7T2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67625573d224d2f4094940fe86f0bc0f70acef41a7a02293775074611a551f. 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/ITL7T2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766d553390beb56317e1f812de19ed5d4460fe401774caa233af3dbc568c9a6e. 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/IT97U2200003.
Lions Dub (Paolo Baldini Dubfiles Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766d553390beb56317e1f812de19ed5d4460fe401774caa233af3dbc568c9a6e. 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/IT97U2200003.
Quando Sono Con Te - Godblesscomputers Liquid Love Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811d72297283069a2d67054f9337b59fa62a95b1548c84c7587a15ae287c8a57. 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/ITT741700085.