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 0x74345f63c960832966c1daf72399b05554046808d82407d278b019a4f85f530d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff68009b-b7c9-41a4-88da-9bd805519e86.json and https://artists.proofprofile.net/proofs/artist/ff68009b-b7c9-41a4-88da-9bd805519e86.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 0x755ace7b9f8f706d41333e93d797bff03ea81b8d9a70759e7ee19ddb3a0c4392. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:34Z), 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/DEZN82516305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccf54c4f818001b7106d16a44603c1c2a6a752dfd93862594b93fb9d79afd63. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82516304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e24b386028ffe1e1af5b0fc595f8e9f9240f6a53d1000e12f08a17e9660abb2. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:59Z), 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/DEZN82516306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9caf34e46967678b819e13731d9c2a18764f70743e443f8e83869c33496bcd. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZN82521635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d8e2aed0a145bb59382e6f2c4524a7fd2811be71e96b38eac4329afe1d2b1e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZN82527713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67084eafb1069290af21d3758f5f5ee73e9411b9f76f196d65d013e8319b8166. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:50:50Z), 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/DEZN82527887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bbd224091f43dec519f80d48d25957cc42ef424cf2e89c9774f613c3fd9545. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZN82527890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae06fd6676818c849c1b3278c926b5248a6dcf5f4f6cb0c0d2d243715505850. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82527891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7526e677f57c0b3c78ed32e066036eb002a4c7058538fb77909e61ca86c590. 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/DEZN82527888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e17781c9660e492d632d6c589641cfe4e2247780df09b4e80e6cf74a2bed3aa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEZN82527889.