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 0xe1117e3db90c8622c7379e843cade28147481a403faadec9b149f7fd5115c665. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a67d0572-0d91-4442-9421-fc7484051093.json and https://artists.proofprofile.net/proofs/artist/a67d0572-0d91-4442-9421-fc7484051093.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 0x9cf0d4fbdd404632f335f73d93d40039352fe5151c137d8d6d361e720cd29c4e. 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/INS232203994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cd6cd59accef2bebe959a103d3facd0f0881eea5b2cfb7f838a2bb2cbf0478. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS232203995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0ff8853f01f8e0a65653e58af3ca7ee656342c9446eb63ed6955af05b72ff0. 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/INS232203998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c3a933d87ed0297be6d3e62cef54a78d45a6dd09df9776e854acede2829902. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS232204000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a2fce1af512346737aaaf7ff97424d4313b6ee7501e0b553b7080f7cd961c. 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/INS232204002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3048dd030fadc8752b2adc4fe999e5a2235178b139497e8adf2830a0d6dc7218. 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/INS232204007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435dc3a7268539ce3532f63fdab4f24e9a9ee469604a9e59c1182e6980ceafa4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS232204017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161a153719ad4b8422e893fc36bbec50ad3474e9063a7de3e8367a7c6d81ac9. 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/INS232204010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb270a40735f658fb847eb1608590d1f54a29f39a1caa006a2d8f0c1ff7471ecc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS232201061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9531c78fe455f16fd3f90565e0740f834375cde4777092cf61509d565fee6c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INS232201067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db12f8e20d900f31acb052e500737e7d453064bcf3d28b0990b282853593c17. 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/INL232300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb0fbcabf0ed4fddac68c71945c403c6397b396f9b1b58f34d1c378f757c919. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/INL232300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f509d73981da99832aea6e800f37025c140b051be2b1179278c1b2ecd8a1218. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/INL232300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2498cbdbd72a133610abc172a911b1d9382e4a8b1eb01569af36c681a3a7d11. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/INL232300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ccf8fe47b220ef37c52a45dffe3d7b64daea44b1fcfb91422839a337e4edaa. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:34:02Z), 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/INL232300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3923a33f30a93ed652d893dc9630fa6a25432f38b5b82add3cbc0469252341. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INL232300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8ecad31ba4c42c31464199d3317efb23241d698f1e218eab716475f6852aff. 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/INL232300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0000f7700c377ca8c798fae791e54579fcd9ed638b83b3469924d852ec75098. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS232103736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e34f04a25ed1a6864ce0d07d70faa8d46b0a664402a3cd82091bf0ff306cdb2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INS232103737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3a0195198ad15f385c03b0f6327e8c860c857fbc4b1851da9d78bf47bba594. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INS232209440.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8507ba87586b84b298f5b95224fddf32377f7670adc677e84d75a9b237468832. 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/INS232500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95f536bb311a8225760efa428816cc57de414a005fc33f473cf96d8ddd0c538. 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/INS232208828.