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 0xa116d87064c96836f4ce9770340f65355acbf12503e8c33a8ea2b0dfef821565. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05ad8658-26d6-4eaa-a1d4-ec5c91bf67a7.json and https://artists.proofprofile.net/proofs/artist/05ad8658-26d6-4eaa-a1d4-ec5c91bf67a7.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 0x33f2c19e66383f352a91f596ff9399c0e812c8785d8573b8cb23734f5dab2b7a. 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/QZMEN2096580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14301e7779f7986aad664a219d9c6484190d5e80cff168ed5000075a54307eac. 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/QZTB22382789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e713b7ab58eb8394a261efb87c80d0c3530a026b2018df4dded79314d0b84c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAU2349582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefe42ea72f83f69004e29c1838506604de48ec3a1bff613e45a3a9e0eb4fa88. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTB32328941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804c6e1aae2e1176019f900dfab1a9f680b6f952862552157a496bed9bae8cf. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:53Z), 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/QZTB32328943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3cf213292d24e1085e5de6fd96c97827da31d7cf45c7f1eaee2b1ce561c96e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:52:55Z), 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/QZTB32328947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ead2b0db1cbadf6ee24b55dfac59ce861e7634c8fc540c3691d74ef053952. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZTB32328949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca96dd5bfe1726669c503165c246f7f4d1ec12501dcc8edbc579264d4ce71eb8. 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/QZTB32328952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c99c4e3a18d0b50a7fe03f1c1b94a5f1ed036d3b8c08e2c11018576b02f4a7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB32328955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af737ce6781f581fa9adf634b6bc6e433741025e9f8b4102cb669f7bd0db6a1. 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/QZTB32328958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c8c50e660c7280878a98d858279a64db113c08797725709b7f33816fa8894e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTB22241776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc69a3c5c24732867cd0c4f0efc29562119fa51cd6e2dc15dbc1c22fdea3eaa. 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/QZTB32328959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84c16f8a719268820dce14f412e5603112b913a886fd0561bdeea680afcd33e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB32328960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d14449d6b13fe4f69defaaf727ac491bcb1064bcbd65fe1257017fe96b0c279. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:10Z), 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/QZTB32328962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d73de29e5e3e1da90f6fdf6851d170a4fd5e5cbed67d7dfccc2a8fbdbcbed5. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZTB32332671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a374d5ffaf14c5205395228ab0c66bfd4851d900b0d62a912f293f3e368c746. 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/QZTB32332678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42687a5f18854820446117c83d6511a8631b28ed4b4606ea3d56124c02e01ec3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZTB32332680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7979436eae513d1cce347ac2bf4b266742f3cd3f9b98df3053de463828f73e91. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB32329010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeff26e6974e98d46630033d79c128680697ea4b871348f01032eb43b8e8ba54. 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/QZTB32329012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ac70928033ee337740c8099cf4b988410bceda7cb198f6b06cff08a398e0c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHNB2349932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a936674facd43e92829a872058006ab23c0721811452705e7f6d4319f063665. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAY2284958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7807d71e00540352bf70dc84387d8f1bc1d1275f67ddb17026fad37154fcda62. 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/QZFZ62379962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebf1424a3458f9e9c244ba1a3132e90b0ecffbbc0b0aaf2cc3fead247f9fdd3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:11Z), 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/QZTB32329016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b02c15d415979f96b6582465de98d0794ffb095a80b72f44cd894472db718e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTB32329020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde53986a3f8a292552e8c5dae92296147011b8a7860bd7748c40c886a25b4288. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:55Z), 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/QZTB32329021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14301e7779f7986aad664a219d9c6484190d5e80cff168ed5000075a54307eac. 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/QZTB22382789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9baaa01efcc0adbc482f38911a83909ec77be2650f372157741a8b43bebfbe0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:25Z), 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/QZTB32329022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270d65b6844822124896ffebebdcdb0451f0c325934e3b56f8c90fd5376c7d3b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZTB32329023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e53c420aa31707b06c43a32059f7d35e17fdc5cad17262d0de3b3a0a5a3d97. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTBA2319881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023b7c368c3041bef714ee82ac7301ad1a7761bb3cc3a3f0df33a3e863c6ecbb. 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/QZWFL2332780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc937c9f2cb957d130362525c18a28761a9324c4fc08e66aec18ddc59c9099455. 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/QZWFL2332781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24289a6a8c4b76adcf7b59cf8140dae5f27afa1dedc607fb95042f2876549d9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFL2332782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37315e09e2d136c24f6f4b2e272b80b742aaf89d8eb00ebec3993f45f8d4d6bf. 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/QZWFL2332783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9cc6930a04f5b0df17587afdd89b6375a6d18e562629ae3edfc3ff96a8cef1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFL2332784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb06046e337e85bb47c6ce908e65ed9c8d7a58a8deaff75a3448e74aa201fb5d. 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/QZWFL2332785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba6a5119cf9285a5f01881ccf6fd4ff0a5476c496930f04d6cbcdb031afa7d3. 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/QZHN72412268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5605ce3b67afd1500ff43b15ecc7a84f6bae632bc2d13d8ac23a88b949ff9f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZHN72497631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38050473485d75142f5437f751f004087b11e0f6257f885afaa627b806dc0676. 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/QZHNB2413550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d29f3652ef4caf8b49342b4b4b615ae8a930598135e4dd8e336cc0a12ffc99. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZK6G2430121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd934b5d8a85d299738aab82fd5b2ea8b167c43ac9347fdad267b31129df2f3b2. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:40:10Z), 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/QZNWX2433178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d732d93a967df12cb5ecb2c7b40a28e739552279625ff5020b19b960a6e11a. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZTAW2479557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd2d1232cb6a7c903d83436003274b4d895d277a75a407484a4da9ef16e233. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZWFN2467727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f66dd39e61d58078230103843682516ecea0ba5fd99430bf0a6673b4a37cfc. 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/QZWFU2409885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855860ebee57e835aceeb1d8273f801767256b8188128f9d3642d249317d7817. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7V2405689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb355ad7cea836d359c7a59696e9df35ea90f0debe61728954d649bf95046845. 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/QZTAU2381934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa006e4741606c59f8790e7cbdbcd01eeee6487fa1339b998cd6de02337cdc9a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAS2459677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409711c65e03bce673b0a753ee3f4b48f54c55a974bd839d030d788faafe9167. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZFZ62520299.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch