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 0xfd8b6fdfc9971370b77fbc71853a3ccaf719383fd460b3cb7e8e5c583a7ea5cc. 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/53831e68-a202-4722-9432-35b01820eaeb.json and https://artists.proofprofile.net/proofs/artist/53831e68-a202-4722-9432-35b01820eaeb.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 0x22456b9082eab0271a61f6438b5bd091082194703584c2ffb208c1ef0cdd98de. 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/FRX872320741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70bfbad5ecd2a47a9f41593fd4c1809b2509e7f8c661a9ca95f2a8e7d3c4e04. 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/FRX452314044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acebb102f7469e26dec699f9d57fa7b8f8285064c4e1078983eeceaf2fbf82b. 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/FRX202372639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92633e3549355574785c6ebbff79ca1bb6e6c816e40c8dc81279ed4644e25339. 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/FRX762332934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ad359511f1365126c7d42fe0dd40595ad73136e8799e8bb93e70cec5aafa5. 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/HKG732292369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f826ca5b26e728b4e94cf1a23e4f22a429e3f79af7c8eff5dcb2b5a34e02a77. 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/FRX872220062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c485fb7cc5c31259d475dbd8a570d81f85e15f7b1d3f16a1e22862dc21820. 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/HKG732271671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbf4334f6d18f0208a2d47a05df5207803bff72ba33a07094612425cea55bc1. 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/FRX452336823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b395599f93c88756d532e22efeb362d8386447fa8b40f04f7027bcb5a890a. 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/HKG732237755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48840d99dc7c9b33b1ff2449d094b5e85d4ce2450971dd9d24388dc89277d478. 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/FR96X2235504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a5d29510d19a5d5a3d6d851b70707d3b10684b78b7cb255214c1816d1b2680. 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/FR96X2225514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9302ed354d352d7d9aabd379ca774d11096ee7ee3c8b96e6e4d9dd945f260fd. 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/FR2X42297703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c91cce090ddd222ce7d93c673b19079855f044ecd121653a42638debb9afe4. 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/HKG731751451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d29b3bbd8bde20299cde6c5ad3b056b8b6194e4ae992d82a9f880ee0fbdb5f. 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/HKG731734189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6952d875a865bb8b0aad4e2d316e4746794fb60c32e5ccc0dc0f151ca6cd30e. 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/HKG731734190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442a34f3b619ae0db53a350f0d49d618a1d74c791b12ea94a842a22bcd972192. 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/HKG731726455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4698a8af0c8d86e58ec221469ed5a75716281d86bd75ad829dd5b33906e468d2. 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/DGA0Q2428332.