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 0x41db7e649d248758152ba8e42efd7376f071ca2fca96f95836e11607aadda3c1. 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/43a4f94a-ef31-4220-9767-2a8e1295e1ac.json and https://artists.proofprofile.net/proofs/artist/43a4f94a-ef31-4220-9767-2a8e1295e1ac.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 0x43c3d757be77b490c6e496a6fae9bdbcf0fdadf0b680ed421d54c2ae36a324f2. 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/ITGFL2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21a8c1a975a43e1323a4a3f85a9df06e3bf2d09601ced76b31a65e38be88321. 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/ITGFL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d9e0ebf59be4253da50eec93b7e26e94dc82b9ac4e8fa7f562e4cf2a22fb2c. 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/ITGFL2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda75eae9d9ecdf3e5bc772b20a424ca5e08ab1de9141c934c51194dcde90798. 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/ITGFL2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c08aa2b9fbc1585fac307c944e38ad57696e126248d3dc0f98db30f7610420. 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/ITGFL2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee29e2292b46f33f01399249acecfd0df300d745112fc1d7e1aa12e438edfd. 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/ITGFL2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1c1462ee657176c39cb7702f3da431f80bac65514249084ac93efd211a79d7. 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/ITGFL2500005.
HO AVUTO UN FLASH (feat. sir prodige & Jack The Smoker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c37b311c5c3a7c950788ef42f6d6394f830d795bc199e37cd598cd89b1a10e. 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/ITGFL2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836a206c3017e4fb9ab53761abab3714f82267c113ba4d21c24a8b3130780d5. 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/ITGFL2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5daf097aba1e8c8858182ba6cdc5b4a139cda87d926a25ad447712a1c8c41f. 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/ITGFL2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304400f520960d45c921d1782fa995dd8b3d4b45b9a00384f2e420bceff12aa7. 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/ITGFL2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21a8c1a975a43e1323a4a3f85a9df06e3bf2d09601ced76b31a65e38be88321. 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/ITGFL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d9e0ebf59be4253da50eec93b7e26e94dc82b9ac4e8fa7f562e4cf2a22fb2c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITGFL2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda75eae9d9ecdf3e5bc772b20a424ca5e08ab1de9141c934c51194dcde90798. 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/ITGFL2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c08aa2b9fbc1585fac307c944e38ad57696e126248d3dc0f98db30f7610420. 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/ITGFL2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee29e2292b46f33f01399249acecfd0df300d745112fc1d7e1aa12e438edfd. 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/ITGFL2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1c1462ee657176c39cb7702f3da431f80bac65514249084ac93efd211a79d7. 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/ITGFL2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c37b311c5c3a7c950788ef42f6d6394f830d795bc199e37cd598cd89b1a10e. 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/ITGFL2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836a206c3017e4fb9ab53761abab3714f82267c113ba4d21c24a8b3130780d5. 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/ITGFL2500007.