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 0x6dad39f658d140da3c310f75d646a2df43e3672f9a59f1f670ddbe3ffe462a17. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4c30feb-cc38-4c82-9fa2-df8bfa330229.json and https://artists.proofprofile.net/proofs/artist/c4c30feb-cc38-4c82-9fa2-df8bfa330229.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 0xb3950f795d0188a54a5b74ada241cf039738ba3bd19a944730d71d0847361bb2. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:10:51Z), 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/IDA642103031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425e9930a8f5eddcf49d8777dfefe878a6c21308961b32b9061d470913eaaeff. 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/IDA642103109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8c5274b741bd7d363ace4a927e50198370f2e83bdd9d89253b56ed6682985b. 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/IDA632101006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f4ac8a9ba8628eb53646c418c6e56e2e3e98b80de5221d11729ed1573d6725. 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/FRX762101854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c71c7b46cc7b15b5681cfd672d973f6ffdbd25aaf37a4540784dc247664e5d. 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/IDA642103223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76948163528a9dc9aa9a74a7d68f4b911d3da9ee18be566a9a29278a453b6b66. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/IDA642103110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca8a0581caae6f31e7b01dac0b979e2a9f8aeaf9f21339443768b760907d36b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA2P2160206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3cfeeeefa5bf51681d035a48d6b2ef2a960b78a41f9a6eba4fdb49196a8529. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRS182140609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8159e31c0b66e40d40c33385252a5175c44dbc117d9d2a26b86470b7307a1d78. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRS182154945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10aef921ad752c781679409fc19d84119320fa8f9fcb9a733e592da3226ec9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USA2P2200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7c30bb67f827ef752293e64a45e07a93a2074605bc32b309ee24ccc2678b01. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:57Z), 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/IDA642203583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d13efe617732e05a79b3d6946fe31bd5bcfb4bd0a983615019eda0cad6ec1e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:59Z), 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/FR2X42257782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088f35c55ce339ac44ff6857d53920b1544a2f31318e2d83b6a9875259b943f5. 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/FR96X2260809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10febf2329d1f4afe2266239f60237141a5fd525edc2a0c797840d4a4892f059. 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/FR96X2252287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883149fc1c07e590e18b808bc1294a32bd6f7460d9d88e29010b305433a3d8c1. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FRX202298988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f540bcd4b4cb634d3e862ba4ea575f3f49d7cf87927168bb8e6bddce08e87a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX282205772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2949d3a4ba55ae2442b0a50bce1c89f6d34da04b3caefd6db2077c6351728c88. 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/IDA832112424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cdf479b2ed8fee17da22ebad4b8573eae99ab12e6333afd3263b984428281a. 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/FR10S2538939.