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 0xa0a4a87528dd3eed34032e840420899f435a6361cf9a6c304fee57eea5b6891e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f726e18-a9bc-457c-ad8c-af16a6cf3e6d.json and https://artists.proofprofile.net/proofs/artist/8f726e18-a9bc-457c-ad8c-af16a6cf3e6d.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 0x962af7b5b7ea1c12ce05d9253fc4769f0ef5d3b79a4bec8fd6ba95871c65f3fb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:21:12Z), 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/GBLFP1501291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa801b006c1b9710ecc3ed1c30647cfbe6cf4c1886e6b9542672ef0b82508d477. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBLFP1772302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb35f74f816c3ba1b67bd96ac6d9732e70b48575c3b4a7bfd5f8723fcbbcdd69. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEYO62000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9567788ea168dca3c609faadd768474e922fb8451ec1020b39fc2826e58c094c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEYO62000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c38a2f38998d2f1e34d7d16891aad3f6cf7a709312acc19c2e2d0b272a6a3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEYO62000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525a06543c37579fe8046986afadcbb3d8fb6be9fc7d9a1e8ea660d59f6e7b82. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEYO62000142.
When You Live with Ghosts, You Don't See the Dead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b82e94f3eb62aaea83695e07d4486c7592cec328feeaeae4cb10889499804d2. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEYO62000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21069f6f2f33ac998745ca375b5394bcb2b6a621530387802e97cc4104f4fe2a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEYO62000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da3789383a170324e6adaff555b61299be8f1ded765da6e3f6fb8932a6628e7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEYO62000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed31c390149074b6db67939c5f28ca6623008ed5a26c9212ec7989a37fc8c0c. 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/DEYO62000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3747df0f736a74b04b8093e3d81ed65a6fdf3e9ec315dbbe07bc6927f4afcf33. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLFP1903981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60b55996c1d23f793b0027af46760b04a70fd191a63e3e911025e45c595634b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEYO62300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4417e38f722230bb7dde3a36b381717ba4c6844085a354c1d3656fc797aba6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:29Z), 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/DEYO62300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cf49fd197a30d4330028e81e119222e74741e8f3490d9a1c21978735f730be. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:52Z), 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/DEYO62300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfada67994fb2bbce1500c253131363e5bff3957451fad87c4302fea94eb97206. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:31:52Z), 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/DEYO62300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3e6c0b233d3a61312e7607f82fb647f354fcedec58f5fd294524a451a83381. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:38Z), 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/DEYO62300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067d41dc388f498391e0677f72e14346d333d1aab5e19cfac9b5334e053ba4ba. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEYO62300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa291577446ddd32df4411d88bd34f25cf8b2fd1039d32d68295ef72012d3259. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEYO62300025.