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 0x16d46a7b9403fcec615ecb221db1a5ae6fdcc63e75872a2326794ad27ab59ba2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1979a0d-1c0f-4323-9811-c43f595b7283.json and https://artists.proofprofile.net/proofs/artist/f1979a0d-1c0f-4323-9811-c43f595b7283.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 0x5b54d77f459b5e6edbd789e5b5ee34338676a71950f90bd2852cbee5944fd67a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:51Z), 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/QM2PV1832792.
Hit or Miss, I Guess They Never Miss Huh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd09e67b426b671874327b36cd9c146533e2459d4beb63feef3c4608b059b9e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CAHQJ1936981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319c3c05a014bd1db56a84e68971c6d48a719cf678a5ef8f34c55c69b0ba63f2. 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/CAHQJ1984627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309b49ad616e1fca68afb2dd6da2053e20512f236ab4a7ed026ee4dcbfd2a16b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGWX2022512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e4856d83bfaaf8af52c835d5ee5e03d86ae616a5e01478b015039f9bafc4c1. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZGWX2001511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a24d4dfadf6a73808425755a5f665555598529e04d74f3f65b1c363e4ab4ea. 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/CAGOO2041684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd174496a6d6b64e6971ab7c625888f662194c72a9a8bfb5adb741562254b48a0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:29:25Z), 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/QZGWX2217507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a094b17085743a3cabcba69b9da64b6399d2021e5f0aa0098d0cd28f34015. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:24Z), 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/QZGWX2217510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fc7433949028a716e5546d0b5f2e072dcd951649b26f864061f021d8689db. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAGOO2120532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7002bb00a493248551f0c17451fbbb5c87def4f6ea080dffb628bd2c53bdb825. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/CACWV2207818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc858a32980291dbefd44b065235aa31170c2e491465b7be1df557ebc64d2e392. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CACWV2231038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e82ee6eb3c1a21c50db0c8121d2566caf9bdaa9d6ba2d90d84a8fa26be61c2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:13:05Z), 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/QZPJ32163262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0931b49c34c94a91af37ce8a4990d302d90481496e74bce605cfbaad47030e3. 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/CACWV2310751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e028bf9f39917044a0e891ad1d6b3c96295a3b499d9c12dbd9692214a3e183c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:22Z), 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/CACWV2555789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a7bb05cef888d201245686dce1f5ff891ee7041081cbd1683c70981581350. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/CACWV2574343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b288509e053efa01c18a144ff86f338f5ee729504f2b209ff9ff1324e89e001. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CAENV2507107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8495acdbc9452a0eca9621e83de4b12912949cb63b11603cbc1c4ec7c80d6850. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CALVP2565481.