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 0xacca5914249d1877ef71e5008d3f214a23faaaf09f7971cd6a95bc3ea82aaa58. 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/6d604c4d-b6bd-4cd6-ad14-74e0cd64c79c.json and https://artists.proofprofile.net/proofs/artist/6d604c4d-b6bd-4cd6-ad14-74e0cd64c79c.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 0xbdcfeb30170a03123fe9157edbae71026a12e35d5a45046867ec5a4f426d2c20. 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/QM4TW2362716.
Beauty And A Beat (slowed + reverb) [feat. PHARAØH & EQRIC]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74374cc33351a4a3d941aaaa275a407ebfbd8345203e50ccec488c6ab3b2dc8a. 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/QZS632257958.
The Cure (slowed + reverb) [feat. EQRIC, PHARAØH & Ceara Cavalieri]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06980c236a05aeb276ffd36d60c6885d50b93554066a1f507cd24016eaba29c5. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZS632224730.
Firework (slowed + reverb) [feat. EQRIC & FYLOW]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f14b90b24605cf4ae429604b5ce73a071b4df8fe76be67dff06e7e92af62d2. 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/QZMHK2251288.
Dark Horse (slowed + reverb) [feat. EQRIC, PHARAØH & FJØRA]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a439b0f75fff8dca1782020f8108ab4b6017e5bd30e8aaec8c07522cb8ba224. 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/QZS642267313.
Colors (slowed + reverb) [feat. Muffin, EQRIC & Narvent]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c8d3a8bb133816468958dad3f13afb52654973d41260bb7e157068a4e4b2b7. 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/QZMHK2297234.
Mood (slowed + reverb) [feat. PHARAØH, EQRIC & EthanUno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d18a309a0f5d922f6da6f4c6be46c3ee3de9c5e5a9663a0eb35a11b978c88b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS632289597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21eb2566907d54de7c9c68c2c8fd53cfc06e1cea5ffb344e971f46a73ae327b. 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/DEPI82306443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33d3105ce215f9d5adf54fdfe075177f87bc2a2aea10198b1d9285024b33a5e. 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/GX8LD2362364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eba27534a5fc0df5a10a8fc8d759f5b5724a6c1ec75c91476a0943587d214b9. 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/GBLV62114117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452672f6587240db0fc21c13e02c16654894962e93dc28b1562c295a1e2a994f. 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/QM42K2284496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa20040de6ec64c7aa5fae1efc1f1ca12ef2aa292867c73b24f42680f9285f1. 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/QZS672178617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4846065586d03798b945aa5b1fae4deb7e32f5726a6edeac282d69df912e61dc. 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/QZMHL2058535.