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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a993674849044f4cbe9542a7ac2fec894eac56f4ed8e3b74b41ec354e29eb. 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/9c973a81-baf0-45d0-b0cb-91339a81c4ce.json and https://artists.proofprofile.net/proofs/artist/9c973a81-baf0-45d0-b0cb-91339a81c4ce.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c906f5d8fe3987728c6665cc28deb0e0bed92a6da2dbc0a9e1dfe4cbbf8092. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZHN32203526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cb58949bd51ba954a348920018d5eb27bf43029cbb44be419b1e495aeee590. 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/QZHN32203527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf66bac5d97b82f6ab797bdbb210ae5f18a8614dbc438ea72f54b6cbec41a00. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZHN32203528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8f586d262cd79627bd26174ec8c545e5345901c39cb28647f06f198389c308. 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/QZHN32203529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683021c3ca42830e6b6aa1fa8314e1ed8a9fc66cda384ab7b45fecfac7d0354a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN32203530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03814f05da9b1d01837626a1bb13b81ffa5bc28e8b64ea923af33cbfe475943f. 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/QZHN32203531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05d036f0182373e0b09045cfe7fe17bdd0caedf133319eb89575a703766c68f. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:55:41Z), 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/QZHN32203532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25f48ae6cc414b088a9f3dc2b273b356a6da14c3d8e50cdfbe73368a14dddf1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNWT2233948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4090c19292d3e5883f9090a4f94b3c7ad34abfd7facd9149694959a4756dab. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWZ2288188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ed9717d45bd51517a772a73a3a8a2bbfe46c60eed29be18a9d07300bd93c8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:43Z), 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/QZNWZ2288189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf89829a61d79408707395b1fc60cfa8e94f77c3f74eae2d039f0e19bf1599. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWZ2288190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9050b69084b8429790d994c54fea2fd57987d3ed55658cd18ab80fe5fff01566. 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/QZNWZ2288191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07cc194841273fc15fb7033aff163ec0bda4aba29cdb992e5d0be952c1ca3cb. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:34Z), 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/QZNWZ2288192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004591c675169237adaf8b19ea39edce23d3172345c335ad7c9f79b08668538c. 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/QZNWZ2288193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c814b6f8205a5b5e01868f02d38385e44c761fd5d955fb831e9fc7d7302639. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZNWZ2288194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266b1fa533fc04acfb77ac6a22b23897d016a5c4eeef80f58198bac635d53677. 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/QZNWZ2288195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa261d8fbee3847a174727331b70a7bd4a34c6de606026215d7fe1e148a669467. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWZ2288196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697c6f500bbb8d7b3f422d2440b4d866ac325fa59e2bbc57c6c51032acce382e. 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/QZNWZ2288197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6341b10cb0b15c0a8e661db8f2f85d2c8510898b4c031f88192a11bc09b8647. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:36Z), 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/QZNWZ2288198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc4330a1516ba33b6b7d71929699426d563eed435d09471a7073bfd81044e5a. 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/QZNWZ2288199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6874cc763a239f769bbaadaf52d953e693ab8305ae69268ae157733e0f9f4366. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZNWZ2288200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf5533e29e7ec2c7001aa1d8f1b66f1c4125094b1b22f3719b5aeb17ac3ad45. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNWZ2288201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5e23886408cad3d527c5eb10e2c5391c439e60927bebfb3807ebe550c649ec. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:48Z), 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/QZNWZ2288202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad470798c0d6c1171ee7c4b03241157b5e6526bb7c9413ef672a464fef95a42d. 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/QZNWZ2288203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2f3fbfc2f0bec6c93955de39885ab43b224257e670aed022bd4d0e27218eb1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:51Z), 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/QZNWZ2288204.
MAXIDENTALLY IN LOVE: Lofi Piano Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e201cd181e0a1547ed33dc432ef37d0d13d9831b838f276bb87bbe54a4a2871. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZMEM2375436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097dfd0f6d715d9cd2dc65a9152bf63aa7a4701fc5d541d9cae1657bba676a1a. 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/QZMEM2375437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559e2b036b9799e0573ae5c4947370b3eaba96c33f72928953675a64721ea4d8. 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/QZMEM2375438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56466ef6831ba1496960c2ebed1eacabce4d53e3375e57d5a87fcd256101d6c4. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZMEM2375439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb44f2bffa9a5ea0d63a79fcac27c28a42d70f1c25d66424fa20e41d79f512c. 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/QZMEM2375441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2342a7309888933d9d218e067869f2c6b56644ef9f2e87542512a9c92c48deab. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZMEM2375442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2643b2e14bf60c65fb46ab811fefc72220f55928079d7d7cf3306d68adbfb6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZMEM2375443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc14438764b078c841d253ef91bd6197db1145c3b99fa63d4f4cdd9a455bb45. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZWFP2392818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a25b2d1ec45d406ac66f6edd1c8f845db6aa0b3960c0b3ba0c7436daab4dbec. 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/QZWFP2392821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dfd48c38df312fc8e13790cab1b092646b854b215f0e5d946b421e9a3b4cbb. 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/QZWFP2392825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0379b16d62a0c7daf75e1e129e490f71d1f412a2d41ddd60ce317dc9527765. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZWFP2392829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e04474ec05ebcd2af52d35afce8491fac51d487d51fe5df56dad376795ba8a. 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/QZWFP2392830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc152817ed3a8bf85ba30690512987034c12abf65cfb9dfbd17d15fa4d72c0513. 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/QZWFP2392831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec0769f1465add132e61f668a11e7e9bb3816ded3fb499155519d6fa6dd437. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB42439780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f35c1fb20a485ac56a8d87bcea841c5311896ba5c97c8b77f3947a9a613eb. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZTB42439784.