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 0xb006d1c25b97ab343edf2ed262ee0cc58046080156ae9e08c3db70666a46b7df. 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/b6129eac-223c-45a6-a28d-9ec7f184592c.json and https://artists.proofprofile.net/proofs/artist/b6129eac-223c-45a6-a28d-9ec7f184592c.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 0xade1a94b5fb2b233a4341b9656d81f0fbc77ca0b292ed262a5d3b23e51c87c25. 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/FR2X42294667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d553dfb42c76707c0a56470f84a16540d7c3cf5e3c8308fcf570c9d990cb7c. 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/FR2X42294668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72895af2fe85680e720706e60082997ce0bf89974e1cb5d1466bd19469fc8c6. 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/FR2X42294669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d69e4299aaeefe90df199c1c205d8a27949a8cfa26f33780b68d906c726a1a4. 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/DGA0M2468681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf640dee8adeba53e0a05fd2eb99899bce56413f1642ef52a3c69c51cbf7bae4b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA062402076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49559d68c3a07f3e8e468728afa3f6001e6631e473e3186d37756de91e50114d. 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/DGA052408234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99a100575b2da3cf54721afdea5e476f08fe9c2156f419c3cbc7ba8a4855fc8. 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/FR10S2470360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c51108b369f1e9669ef81d7662ed64493590f3b595ccbfe764553b057821e12. 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/DGA092370567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa667fd66ce62ba62c402c48974d7b8cbcdf5e4ba630dd96b9107205b763efd37. 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/DGA072317359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57acc3fcaaac71c8bfe6dfa0fc2082b0310ce9e0bcd5742e7490c66f9642855b. 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/FRX762357333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3864e36b3484dd67d920aa9c64125e1b2d95ecaee0379970998c4845b8efa8b5. 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/FRX872235515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8df2b8a8fb4fa6a228856603ad9bac507bfc0a364ec95b2b6be90d972b2078. 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/FRX872234881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a00d025b4026dc407cd89304a0555f2a14be444ff3af9b8f8c248fe0342de1d. 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/FRX282275933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa33967d6d245476f46013e3b085ea5cb5c3d77918e397c6b016521fdc4ccf5e. 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/FR96X2250012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ed21739b9a35d438fc07d75a20ef0182bad0d6fd4c5ce8cd8118247b35c481. 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/FR59R2202899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04e3824eaea20ad464e100f0e38c4c2d8b5b17975d25361026d9eab3d89a9da. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX452210013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177676e8b477508a3bfd88b0d79fe4ee9a6cccd1a623d1f0aa654e8a9368bbfc. 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/FRX452210005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dfbf3c93bc98adc9a4210782dfaa5e97367ee791e5c2ab135cc94efb50ebb6. 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/FRX452210014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34011c5bfac556185f6212b55f784ad26e4766a80792b788c40d8e4e1ae8e5ab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R2202888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1ab1c0cedf6f427c1b372bce9ec3944fb795e2b8b1bbe580d20cb8952a1d6a. 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/FRX282236552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3471c462271592e5c6ed1454c04657e775fe10d832f5cea7421eaca098e5fd56. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282236558.