thumb|right|Vintage cars in optimal states of repair may be described as being in mint condition. Mint condition is an expression used to denote the quality of a pre-owned good as displaying virtuall
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 0x855d4ae7987c4a780fee540fc10eec5c4a8c6f74f693fc4ce5f32ff5f1242b65. 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/c6b034ac-a256-4f09-a77f-73567d50339f.json and https://artists.proofprofile.net/proofs/artist/c6b034ac-a256-4f09-a77f-73567d50339f.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 0x939f53cd2ad8d7e628356b4c6f413c2a55e528b317a3d3f31cce8fc4e245a811. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWWW0125245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8092a987020497610aa086a08b5303f35ad49e4fca29120468ce69579566c. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USAM10110041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574afb588cdf4308a62e115e711304eedc27e97cae30cd2fdbe0f58dea76c528. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USAM10110042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7920bc8c155e438c6bf6243afc37442eb3dc7ce66940f493bbd72e3d3a13ca09. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USPR19602288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63d84344f0c32e8c0bcedfc80cb7f95621347ca0620f80f44ea48534aa17922. 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/USPR19100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03c30b40a09b3e073ea2b3f0d938b6495a492f593cea88977ed5df33dd9bd59. 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/USPR19304492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde36eb9298e7a313cb4130ddafb52fafc547602a28c3f9ea9aa02e0fc2ffaa4. 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/USPR19704481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf689414ddd1f3bf00e3613b27a08aebc55d3a6ab1f9d705a10cf97da2e03fbdb. 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/USPR19602281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb882ace6f01fc63c977264dcc08ac8b1d748aea6b139563fd8697ab0a5cccc82. 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/USAM10110049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90756df5438b551f99122a305477723c9dd83d6ce9e7756ea5a277bca197b886. 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/USPR19204492.
The Best Of Mint Condition 20th Century Masters The Millennium Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3aac0d4e852829bdfe3a0e23e30fc3348f7cc4cb721093d09b13f16ddcc638. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USWWW0125247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ffdcf282d83cfb0fb413782a15162c3a6f7c85d0f577cdec62cd5099cd972. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USAM10110044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3131d838f9ca1407759e501fe6b66ecbdf650e0e1558fc0a6803498a596b27. 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/US7SF1252294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e3b0c2010945ee44edfc64a1deb4cdad0993d121bff14b0f61685a560569f. 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/US7SF1252295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d30db866264fe85a846beb87cc2bb782aa45e9f9525466036502186ea9a6fc. 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/USHM91751175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75fcd795da60d68962a4b993593998d3eec265d38937ecb76c324bfd613b4ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM91751176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4802412ffe9925b52df04c7825da5d2ad60a0c671186806b7db3578d4f0bd885. 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/USHM91751179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4c3e38a7c5609eceb2242bf6c204a39fa7932363bc7770226f254d3a44d9bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM91751180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4775f6115c7549fcfa327a85f6db9fcb102d32e49080b9254c7207064c1de0. 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/USHM91751184.
Mint Condition (Live from the 9:30 Club)