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 0xc7e78ecbdee31fb36ff5a7a9d5908b63fd7a180e23ca63f74183074dd2850d22. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20b7144d-00ca-4e70-861a-a6e9e38737c0.json and https://artists.proofprofile.net/proofs/artist/20b7144d-00ca-4e70-861a-a6e9e38737c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moarhuber Ziachmusi & Kirchleit'n Soat'nmusi
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 0xe19fd68883959c12fa91e8c94df2e77e92faeaa42d41b8ebe0a7cbd10f7d92cb. 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/DEA669900789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e173fe8a565cedcf339501e906cbfcf70e710c2410a8f57fc874e1d785da5. 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/DEA669900790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf7e475b48d8156715507f510c55756465dde10002e83d3437e8148a3212788. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEA669900791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23836d14f4c3fc38e74c0491e6ebea4aabc289f837480711be33ee45e289931b. 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/DEA669900794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97811128d21ed0e6c0b35e49d46acb6b28c0d75d7d4cd2af26aa5763c1035e38. 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/DEA669900798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d60b967f4b7588d8e824b686c7d1a27ad823e802bf6f5269c965677777c71. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEA669900800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3eb59635f706470b207b343de5328c621bc4a1c2bd171170fff6430d19938a. 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/DEA669900804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a3caa60f934ad8f68cc77d3243b6a304f58ca16fb87404e9f7d90536e760d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEA669900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1327d79c41f32b520b3b3dc0c5511520b8295e2ce7cf994ee873a5e179835db6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEA669900807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b3acf322a06e376d96578daeb3bb91419b011ac4e62aa48d2f50a0ba9698c9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEA669900808.