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 0x0b1e6cbc88bf33ea6066330067085c5cc44f51c8ec812b54bd808a61f216aacc. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f69b522d-5e54-4cff-97dd-b35b22f927e2.json and https://artists.proofprofile.net/proofs/artist/f69b522d-5e54-4cff-97dd-b35b22f927e2.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 0x0223eccb9418e9d409ac70bf579923549dabe05185c52a7ca344edb1355e6ccd. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:52:12Z), 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/JPP301800724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e334398a68571aa365dfda5f8bbe287744b0b686f3465116ceb61f07c009f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPP302000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53de6a7eabefbb1fe3409e757406aa1bbe15ea086e2617aeb51d614546f8c449. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPP302000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966a62baca088c48cf99e7fe71fd006bf03e5caf4ae2f1f324ea5073d214c15b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPP302000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6742d3c3ae6029ce27b49f61353dcc1f37791f158c843ecac7eb6e67f202796. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:10Z), 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/JPP302000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fdb67bd684532c615e3c4a5be8408c2c48f21bf9420228bf6eb2c9c4e49988. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPP302000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387d5da965c2adffc568f18bd23cd254a2ae44d44cc73a74fe78c7081fe0c1f3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPP302000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e33bdd10a9a647092116a020e759f51f7002876bfd0907c1efdf8c1e9039684. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JPP302000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e50bd8140c0b272f362e24c2ce001bc4fad56417de98d4f9803a47e5bbc8d1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:52Z), 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/JPP302000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53de6a7eabefbb1fe3409e757406aa1bbe15ea086e2617aeb51d614546f8c449. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPP302000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387d5da965c2adffc568f18bd23cd254a2ae44d44cc73a74fe78c7081fe0c1f3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPP302000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33da4eeaa20c8953e74e313d9828899c9209c12f0f6f884a92c5362d28e309e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:51:13Z), 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/JPP302101945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df106a3f4fc8fddf5844288803c0f47235e7811d68d7ae01d28e2d14325496. 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/JPP301800865.