1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x66fbeed07d63eff1167c0ef965e46438c8edb8fbb98d18825564fc803535a577. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/127f282d-cfc4-4a5d-b39c-0097ea868319.json and https://artists.proofprofile.net/proofs/artist/127f282d-cfc4-4a5d-b39c-0097ea868319.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 → block OTSBitcoinBlock must exist at that height 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 0x5c66f522e20ef17c405e0420822c0f864b9ab91db8d5da877ccbe85ded0f90f2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USHM82181076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97e9cfcd202bf4b4c2085b898295e9cd5fd6408442424feb50b195bc94ce98f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM82181080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df773e5a38cefaa7069c933131d340b8bc7d83c09b02baa353c62af76acd7bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM82181084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722216181c5fddaf6654698d360ba4e9884a654be10d1bc14dfae636568b2383. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM21896773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208ea2dc4db225cf3f1e76ad61edba522d50d592739e3f2931ab0c4e62585a17. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM21896774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69311f5018c0fea6ab0cb09cda6128f8acec3f77529ff1d2de2d5199eb77eb1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM21896775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21a50535b073836a704d41d0d9bcf4ce9c609254dbb3fa1afd944fcb91e660c. 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/USHM21896776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc42a7229f2d5b8b1204628e0790323f21230279a537c3499e78b99d3350621. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM21747942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc886f9c91384a4eae6b3036c76c9f2d6056bf585677e9ab7c6b91e21bc7fbb3d. 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/USHM21747949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05d0ec68685eae92dc79450d6ec2ffd525e54d8c0b94db5e579b3e10c5e781. 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/USHM91374771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c2acc72235b2b7e5b1846b11aa18b646bddbffb53dd4d9f9d29bab6f62e37. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM91374776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f16aac51c5768ef69c7e0e77c17ce528b66c449d7d3c4ae820cdcc1b3ac3bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91374778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb662aea4fbb8bd13daec0516e03eb9ddf6f7b46fdd42d7b02b13cdc1076f708e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGH1009148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafffd15bd02c5ceace4dc73d3485f4e7d45dd62ecffa576cac2135a46cb35dde. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCGH1009153.