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 0xbbd2e3259a726c6794a9158e38ae249a19443a908e27715b7ad5c875fdafa318. 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/8142aa50-25bd-451b-9531-6f4ab3aa5dfc.json and https://artists.proofprofile.net/proofs/artist/8142aa50-25bd-451b-9531-6f4ab3aa5dfc.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 0xcaf4ce1bd857238627e8db9ebabc9af3a3e35ad676f261cb6d97a8a3ec6e8159. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMA5H0911467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d419daca5d166ccc27a0b3dba541d8e5aa5fc12597999825ff7a2c94530d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMA5H0911471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29546d2c55933b2f66cca6a3a9f5e9005c6cfe3b83ccbe75527fdc251eea9534. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMA5H0911472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422d859f5df88b99ca550e7146f23e88a6384264f1252294a169cd55e4a650f0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMA5H0911473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65abe572128aff134d57d9979982bf363930650c19c26511dccb1afa83bd73c8. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QMA5H0911534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebbfe5b2788f8959309750da333d836a337e849d765ca82750754819bcf35d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMA5H0911535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ddcc9b7ec92d4b41cf052cef92f3b0aaf3c1e0ec7e00defdcf84dd202932fe. 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/QMA5H0911536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0b6d504932af445aaa5337213546cfc70c05cea15e3ece35c1fb10f0912f1e. 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/QMA5H0911537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fceb0d77a42f84bc2f339d6f0265bea6c746e7932ef83cd3e525ef0bafbb2e5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QMA5H0911543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c9bce48fe01bb4a1ee2709bddaedb3e69752b441cb5acd0036011c6016613b. 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/QMA5H0911544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e76c0140b0686e0cdfc2c3aca087336e18ad6f378aafe446ee081c590c7b82. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QMA5H0911545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2e9b063938fbca34f58f73708b694775bcdd23fb9017c6e85408ebb847a3a5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:53Z), 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/QMA5H0911477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6cb049207fb34c8fef41ed3c57dcd8993d44dbe54b617d8c471e730bea22d0. 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/QMA5H0911546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d8dc7ee54a626ee84842bf386be34fc9b95e393dc8e853a9401bdf5b9acc74. 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/QMA5H0911584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8463eab86b3f2ee60307cc50a2b2f390da316a5399cf1947491c17a43da848. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:51Z), 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/QMA5H0911585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb6abd7d0545831c8d8ea1905fb4288b89b18a218e278a109d577d577c57e0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMA5H0911586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7df19ef2ff6eac1f92b07747d85a4786c49036f1f700cb17ec0aa728b7fb41. 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/QMA5H0911588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2ef01cf11b87c6ff8d8749602b4fa5a87557ecbd5fb3c153aaf426f00ef261. 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/QMA5H0911592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0535b950ab8cad36b06ae094506beee74b478e04ea011d5b8568040b22a77f98. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMA5H0911595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3af10b284ba9f68089b58eb49e63167969606d5637bdf21f294dcd1d639064. 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/QMA5H0911596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf978f54fa5f7d19c9c8bf138c3bdc1cf86f4a3c1e971b2cfb42220dd10d01bc9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMA5H0911598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ce8717f5f5f6cb5c00c9ef167cb1c806029624a4c58870cf9d251ea7ae8849. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMA5H0911654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afcf3292496fd5af25fe854480e86735d2fad812f10dbcbec6a4b3819dcae7c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:29:57Z), 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/QMA5H0911672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ace62c30c1575c1e8e2bf79c51de29e067bf8f4b394ca6efcba970267e1fb62. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMA5H0911554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7807e07154addafe399da63ba848b4ac82ff1bd8f712fa1672938fce3f174. 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/QMA5H0911555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0ceb2e43a5c57619523c42b3a9c9983414b98d8ee829e41a0332419adb9479. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMA5H0911569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6d5c80cdb4babb162914eceb270becc584d01216623ec4c5e0d0fb520ae980. 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/USZBG1300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf6e324de6321739269b835cb41da5b28106d740ce8f8ce617e20e8232219ca. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6DC1532790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2398ea2de27301e37fa660bf76b5038ddc8928f9f50ce39ab901a00761173df. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6DC1532792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191078d74b04c4bea748b77a426eac407f018984371f59173f6f66cecb15b62e. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QM6DC1532798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28887b8a9abf5b5fb4509ea555628d54844c7a7cedf8c89ab48ae40cac03a2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QM6DC1532799.