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 0x9b7294e12206f0aea3ff1d710ad84cec9153aee6c45e2a784a0a9cfa594940f0. 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/7dfe804f-cb32-4f32-bb76-e939431984fe.json and https://artists.proofprofile.net/proofs/artist/7dfe804f-cb32-4f32-bb76-e939431984fe.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 0x802b5258b30fb06f636dcded008302d1d7020b0c50a87c129985e26a662cc643. 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/JPU901801168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2de2dcc3c68dd2342307f7941c67fae40f28081a11010be2a9bdd89b19b354. 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/JPU901801169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a2a46a1a5e02c5be8e652e2143b5177ec4138cc1488b15229f339e23591c15. 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/JPU901801170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5cff11123556e8b6156ec90783134cde341fee4a3b8ead2364b817f55d657d. 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/JPU901801171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9450d04ca4f9431ab5ab77eed9e00f11a3c9a3a2ad5588b51401672f0e95ba07. 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/JPU901801172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631e3f449bc74cf7f107e3e8aa73333322605c04146f384f31b5f2391cc8c5d3. 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/JPU901801173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1fa5742d655777e11dce34f197e54568f4748585d1a2fd0d6576d5a2101602. 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/JPU901801174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ce7861b28fc9aadc9889cce83b2affd9fc3b2b6d01db529250cd9f9560872. 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/JPU902403229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b743751893ba1a7a3928f68c2c31e12558eeaf5dca0d46f9e554a55982857c. 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/JPU902403613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66b8df70745e3e8dbf07ed88f76a78f9329411601aa2eda28592c0014ef6c02. 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/JPU902403802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6a290c694faaa67317dfb9db98004b28f43fb14c8410b2f4e1b5222e87b3e. 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/JPU902404054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6a290c694faaa67317dfb9db98004b28f43fb14c8410b2f4e1b5222e87b3e. 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/JPU902404054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b743751893ba1a7a3928f68c2c31e12558eeaf5dca0d46f9e554a55982857c. 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/JPU902403613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66b8df70745e3e8dbf07ed88f76a78f9329411601aa2eda28592c0014ef6c02. 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/JPU902403802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae88f9c8e5397c52c8b0915047f3ce8862796423a85478c8e8474eb95eab341. 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/JPU902404277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a73c08ff23ac1a2930424cae378e70febad61f2f5020ba1087244d10236f7c. 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/JPU902404278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ce7861b28fc9aadc9889cce83b2affd9fc3b2b6d01db529250cd9f9560872. 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/JPU902403229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e22820aa64e9964f1602d1e44a64f1d0a7c9bca127872fc62c2010061a61722. 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/JPU902404279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa49e622947fd1e5762e5e0d3432ccc092118f20fa10454521cbd9a133b0b7. 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/JPU902404280.