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 0x09124b0f486782dc79662e68555ab59624796207dd8c1848cd56f41a51d12b8d. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81294f16-0967-4e9f-9735-b64f2fac8664.json and https://artists.proofprofile.net/proofs/artist/81294f16-0967-4e9f-9735-b64f2fac8664.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 0xa6ac8e7510b316148868e705ec4ec50369f76002c4cd228b04b9913810bffa08. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP2383957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f06905b36171eeb027ec0c62baa6ef2088804ca7c8f30f2f36ba8aeebe9425. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLFP2383958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9603de778ba5fbc4d1f0844f0b490672a98aede65bcfb8178d5fd794d3ed74. 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/GBLFP2383954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ebf78755f20a5a327548147fb326b88297ae8bda17bcda06a9ea9e38d1a6e5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:29Z), 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/GBLFP2383959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0e0163a05dddb2275944c09d14b55445542cb894645f53dcd98c28c47096c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBLFP2383960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe686eba0218db8f60c41921887f6b44e70dc74deb7c41c531a02fb7153f85c7b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBLFP2383961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419aceb7d70f17dc8002400ae6baa7b50032072d685c44f3152ef1c26974f3a6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP2383962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9564242e6d6d5abbe1bf6f6a8afa849447c924bda326098dadfd9963b3598933. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:52Z), 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/GBLFP2383963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe719a0dad944cfc8ff52739cd27df0caf8f53da2030efb21d5bdfbfab31d2d18. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBLFP2383964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f35198f906465d964ade7c0c97154034ea6e4b16d947b11622ffbb4d6fa4172. 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/GBLFP2383955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1567cf883124f16a1a969d3ec1d9bdb78bca34db449ec4f333d91478dc54ad8f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBLFP2383965.