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 0x9f4b24e05e9808ef985e2d41390d28509652e83cf101ea676cd2c3837ed0a5d9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c194ea95-22e0-401e-a8b9-c955950b73da.json and https://artists.proofprofile.net/proofs/artist/c194ea95-22e0-401e-a8b9-c955950b73da.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 0x37ba304f6b505a5e289000e2235f24f45604688fc548407ca50e0d31e11d0617. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMEZE1812348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83d227b9a289cdfa7e6f988eb2c494488ca3ce0b68c0def1ebda77fd89f934. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:25Z), 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/FRX762181242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147ec56b864acd55586040a3677125a43017d458e95b31ac34b03178887cb318. 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/FRX762181244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ca8ff63ab18390d0e366bf1e4c4b00e34014c0acc693d29b73e6d23a599750. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:47:09Z), 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/FRX762181249.
Llanto Risas Y Rock And Roll (Rock Mexicano Presenta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa245e276aa2a47d7f5829668e0b42d62fe91c2401f331ef4714f685941ef0638. 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/DGA082382815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7302a3ec8a3df8e4f6a4013a7ce143d09c23112c3c6df8c16711d1d15b325284. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:48Z), 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/DGA082382820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1371f8576c9edc5f54ef384c29dd899c35ea31615e43bfbde50cd3d00e96f1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA062497453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb70c0879ef3b604c44d73fb11a346c3d05027836cdc308896f54a45adf19a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA062497454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb88bfed2a2f8288caba8088e93d8a080a21688ef8642f11bf8e77f0c73dd89. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:52Z), 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/DGA062497457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6b9a144215b77fe01e85472e63474b8c36948f19b79abc60bab768cf13df0d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2532966.