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 0xf4f2c9b7efbc11497e9e10460bd3f0b969b59db194ea6b3249a307adfcf26796. 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/3f1ceae8-7f26-4d7b-9391-23f9469e9749.json and https://artists.proofprofile.net/proofs/artist/3f1ceae8-7f26-4d7b-9391-23f9469e9749.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 0x3d0466abeec31cba5c4fc9f31df95484f596e50223891d99b63c3b472be8f9cf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2469461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b0e2fe6762dab99a57152d5d11689c22ec0d348948d05c7dae23535e5304e9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUAGT2469462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa57cba801d5d537993138c5099d8449a395f67bce6b1b190530dae862531db. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUAGT2469463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2361a7d6ba10ef8a3895c8d42654de232e8e61852bb3385ee32ee1eb73690b10. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:25:18Z), 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/RUAGT2469464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aa51dfdbd974981c13fa290ab6bc66a1538a77da24f3166aded16eb29e2664. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/AEA2M2476891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37000ab337a0cdd58e7331e039e447df500cbd56f9f229f20023a174a64b8d65. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RUAGT2483689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe259900235d5870e82de9151e6e2801b38a6c88b39ee57935ea50991b8759e25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAH62411516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2cd050ebf0afd3f60156d66d2ac7bfbca4a40ca45e56971f9aadc4ff1fec6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:30Z), 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/RUA1D2547584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20fea9d711bea38543288b8bc9fcdec6c4cbe5e45a81ed0ab753343725d741f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUAGT2532629.