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 0x0721b940ad4969893d53621dc830bd823784b44e33d1ab8e9f2c59314b96673a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aaa9294-19ed-44c0-9b5f-1e6f9cac5574.json and https://artists.proofprofile.net/proofs/artist/8aaa9294-19ed-44c0-9b5f-1e6f9cac5574.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 0x3716bf169a7cfdab2c9a824338da44c9e8d7a10c3db566b50e984b48ae8c3027. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62332195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc109d22c331c8dc46b40db9fe5001bc239b1480f94a27a28280b16e3f16d2fc9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202168648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1b3e34795b66096ac99be7396e69177450893982f8edd61f06e11b135980b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2166572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a82f2db630b6e43f781db6b21c971de7310af3a5bfc4f907387b4663cf64d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202168649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609929980110d1417d5152c7e4818c831993fa04454f80c5bed01da953bef6f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202168650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8d35def1584061320ea37561dce9cc6ecec5f0079d0125ac83a78aeb80e40. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202124908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc8266c8426bb25ee1ed136bf28f03c0dc956bcf91015969353f4d7fda3f7da. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX202168651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974de5e6ea6b0e1f1da02050df083dbab62387bc91bbaf76cdaecb773241e9d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202168652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13ab7570e8296701b791b94ba0d70d2094940ebac2e13a52addc66f57855e2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202168653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bb8d9fe43bec482ad6c98aca912bda0730a8490f886689cb002b647018fd4e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202168654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681f442361d1f71280235ba720157587c3d309b8f8a67fd1527a4c67feefd026. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202168655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8d35def1584061320ea37561dce9cc6ecec5f0079d0125ac83a78aeb80e40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202124908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1b3e34795b66096ac99be7396e69177450893982f8edd61f06e11b135980b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR96X2166572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c629466be4d1ea5d2a6032c7f60b3add3f530c5336e66f4eff99708a2f839b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA622100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183fb16538b61dce7f07308de670e32d20b20cd4a5034b3b2f6601e528650a0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA622001502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819de99dffe0d2db4de33ce03b9e84595f0b30cfff029c6be7d525fe7384bbe2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA622001077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dc5f5d9b13a12dcc2c75c0469e627d6595187f959257fc8df3278ffb04f1a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA622000829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4696c5c52a271a55d59c875fbb1ad44334e696999f11488ab103fd8154b50cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA622000522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5719db0b8158e64e16b3c6c5c24edf1823a23b21603429c3865d8b8f6f6a26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA622000416.