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 0x7755c9309cd7c27c71b30be86620d1517d272c9bdb75aa28f1d15b2c028a1afb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96179b48-fc2a-4960-8b10-422b27fb4019.json and https://artists.proofprofile.net/proofs/artist/96179b48-fc2a-4960-8b10-422b27fb4019.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 0x44ee041c927954e505817dd24b7c9c019950750f575d90c143876701dc033410. 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/BC1HI2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501e3b18668ecceaeb7b57844bc133f5216ad226cbfbd5595a26a052f1bd079. 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/BC1HI2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee041c927954e505817dd24b7c9c019950750f575d90c143876701dc033410. 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/BC1HI2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d726539d9ad0f7506846cd11d03df87ff1b01eed761549488f120345c8d5f7. 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/BC1HI2200013.
Chill Brazilian Storm: Bossa Nova Beats 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6437f54bff04f97242984ec030971a10aef0631df825ad3f08621fd451eb8496. 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/BC1HI2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b00db491f2114795932cd53fc703a2ca4f7d744e9141af88838090528b73c7d. 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/BC1HI2100009.
Chill Brazilian Storm: Skate, Surf & Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ba86f0909a31b99677acf4e9b1991581e8b39ca8ae4112ca652f1e7b923cc. 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/BC1HI2300003.
Chill Brazilian Storm: Everything Is a Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb8bcfa35a19bd6d2e15adc0729ce41e3367420bb204863eb39e1a8811196e. 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/BC1HI2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6437f54bff04f97242984ec030971a10aef0631df825ad3f08621fd451eb8496. 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/BC1HI2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa526a20e429e47cdb3a9c8ae4d35cfe45a8f9c82736ebd752f488db3ddc82ec1. 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/BC1HI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7caedddedb34b9de3fa4dd07419f5acb50c9560cb021c20f359c091f35fa6f. 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/USANG2228018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9a2ded259c49faca5722d99ef90aa15fb5113df5ba5ad83befebe16d960ffb. 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/BC1HI2200012.