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 0x995a91a6a0b05361ee3b860fd6c1739001d82b74830607b230549548641ab01a. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad52c73e-303b-4785-9562-e67544ecec27.json and https://artists.proofprofile.net/proofs/artist/ad52c73e-303b-4785-9562-e67544ecec27.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 0x08f211f5ac1babf4ef6b95465cb473139d8496da10df23f1337598a3d91d8ecf. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAJM2538366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f87d5aef5ea5e444adb57b63084a0499cef0d3eb511b5800207c1791ee3cd2. 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/TCAJM2538372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c2762e2f7257ad1693f952dfea911c22ce21ce3faa0c6ade93cd12e2749d4d. 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/TCAJM2538374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ebc24072bdb00f9a6b56af4a7415e8fa1cdabb2a7dd11894214f40cb405a31. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJO2501624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb0c40becec39ebc6866730bcc8f88767a55d2886074ad6372d8e9bc156822. 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/TCAJP2501626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893b19cbe166f95107705623ec0ae7e811f265dc6a469f13345f238ac443d0c8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:28Z), 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/TCAJO2501631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9e5a916a6d25b8286d9787d20231393ad4cec7218129ea1d121aca3f9d62b6. 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/TCAJO2501639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a6a83c6cf73b7e4dcddf7783844f5a817738fd6cf246edbdb694f843304f6. 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/TCAJO2501703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ad870fbe42c8729b8a3c519297f96f70abc794ba35e5ad2f2f3ba4762b518a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAJP2501716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9210c34e920568562df56de66ac56b3c1498db37648a1e411a381e94c12b52b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCAJP2501725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dfa5e19a344f34ba291d9505146f086f7bbd2726277ceadfc393530d6d5299. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJP2501729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b65c4c0b31f57ff6c5192d2182095fd7912d8c07ca0f9dd200ec49b6cb856f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJO2501733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ac2ab57da943611df67fad90d5ba047981428c7629d0f89a0787fd8f3734a2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJR2552321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce9cd1cfa9420a4b4b514b847d9973b6382be1fe80ce62524106396192fcd8. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJR2552327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798217273de485f6437e95b629604a8027719d9c7cda673fff97dc31695454d2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJS2552333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1d3f82405a2aabb08bc18548f6570d8f11f2aa75e2f9f279325d6ca5ef72f5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJR2552335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfb6a0d868a3ff1be085981f4478d3a43eb822903cb87e5925d0dfef1d21fe2. 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/TCAJS2552338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bef34c924a4c130565b82bb5dcc94109c48cd37f00fe7effe10ef8f59922a7. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJS2552340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362057065d8d30fa6c21832f0e84d1bbfd81a22db13181812cd7d536815e9839. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAJS2552342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041848bfd53cfdcd41a6c003f930ad36cd3d1f24288a8f6e5ec584c95af874ad. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJS2552197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee8bec512d2e15e4c6ea73941a9d3cfdb79edfc1962fb944c54604d88fbf8f1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJR2552199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535940a74c17b50eff761c499e8deee3de43e1591b849b54a5a36f40d1eccda4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAJS2552202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd38e9dae5402910b3b2e3adf1ca25ecf819cebea975da624b9c71368251abf. 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/TCAJR2552204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb2efac6ccb0f3a752412de834bf33c12d8207db26e89599873b5be6ca0fdf. 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/TCAJR2552207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6427f2a44130b69e6861d2239de258d129c02b25f71b0a1277d57e83c36dc0. 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/TCAJR2552212.