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 0x89ea9f0ae5081e9b41ab8a24d553ae964b0195f9427eb6eb72e06b3e7fc3b66d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77a1e481-8bbf-428d-83d3-c455116f7722.json and https://artists.proofprofile.net/proofs/artist/77a1e481-8bbf-428d-83d3-c455116f7722.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 0xe6683e4672d9470fae9a3071ac06b66bfabe10bc3b127a9563caa3b945861903. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USHM22236292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc505bd34640062795f14405018683f2b16ef25c5a4febf51127e8231076bf09. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM22236295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b31949f67ace1d53a58240c6f8d331ba2e1384d3608c81c49e4b7682390c8. 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/USHM91899678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e9ecdc89c647fbd5ea2369b67ac6575e0fb6ab9d36f4eb6581a91c338451d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USDY41843512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fbbddc345f722588c7e2a4cdc914fde9370d9b1d5f8ac1916217f8fb738ef8. 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/USDY41843513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253e887d1de9ac04e259fd8679feead0621d098d3dc976a8be21b17089870a03. 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/USDY41843514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0c2d951fba8c27785aaa7c7ed957be07645258e26cdca3896abae44ab5be95. 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/USDY41843515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb9c7aa8bb13018e230ec85f00ebe375c4ae1edc86dc4ea681756b113e21179. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USDY41843517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe446f9c913c6fdc89d6d41278fc23386fb9918012438039f7957c3696e200982. 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/USDY41843520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e2a52995f673d601c25ba9adae9caf3ecb8698a38ed33473a00f42592e79be. 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/USDY41843522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa8bf4f89f16f9f916e83012945f6bb59f50ac5a51c7e0afcdc97c2619b08c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDY41843523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ee09c84c1cf88bd6504bcd9261b2d5d77751a1ad8681f56551db27e6044f3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USDY41781323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998bc133c987021fc0f6a12b858527d5ea423be61561bb6575b4f282be6d693c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USDY41781324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75af4ffcf77f4cbb0785b1f364f97bbb582ab911aa393cb51ad36013ed7476b8. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USDY41781326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c2dd1a9194ee2da880912060bcd46fd469f81181608908fd1c636defdfa7d0. 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/USDY41781327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b7ce64134c85a1b86296718ae62e1ed324ecc6138d2887b1b6d5c486a7002b. 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/USDY41781328.
Medley Mario Chacón: Así Es Mi Tierra / Ticas Lindas / Caballito Nicoyano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee894703dee980fad24b9f4c4d5e9eb7d1e46c048028aeff5ce9d478d31ca1b6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USDY41781331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ceade833a200e189d1b9bfbda769ac2d0d169cd9502b7ae7af6563f473ddc9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USDY41781332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4957d272abf121abbc0f68839256f59d8c8e4d28b6e53666687867b1f08ab957. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USDY41781333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d820a791457d7cc1fecf87c701adbdd95c33e207aeff9fae318e83bf4378281. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM91476739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d852a1999712af01be63c9ed1dd204a8852d339554b3c2929778cd763db1ea. 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/USHM91476744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06764c7b5348dd8510b7f55a68d17e640cd80cb628afae01416ffeb6743a78. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCGH1464313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dd2cbb106ff64b0c2d908ade13e2eda94168f23cfe0a85161a874ea9e406e2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USCGH1464314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9deb461eb3b986be1180c78390d8d69da538b9c88f9293b73ae9587189425b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USCGH1464321.
Sinatra's Medley: Come Fly with Me / New York New York / My Way
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6523d3077a52a225b6563915a5b4b58dba1dfc5b090c35a2a53349382805f9b8. 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/USL4Q1959839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9b51900fb668bdf5e8efeff65eed7f8737504a9c1717be8c04bf08270fe291. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGJ1971303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bae599f08b81adae7b90e0de7b1ad7c31b71ed2e70046c14299115c4075b36. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGJ1599571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68cb5895ccb8ca7845b067fecad3f2cda94d06439cd0e2da6eecec4680fc592. 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/USDY41875491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb7f65cd866aeaf41d0a5dfe2901c8b7fb682c08d4e7d248ad19a600b65725f. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USDY41875492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8df306db324b6f44f19705a65212bbe1c76267dc659f5d69aae298c311133e. 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/USDY41875493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e66fda930e8641ba453d2f2718fe85a1e7a20be42f5ad06e689f94f22a7440. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USDY41875494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e91ba8e18b9d51e63e705a9d492e647d8266eb5bc5c773195942442f6d5c16. 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/USDY41875495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4593d92c84ceefb1ee51f34b599e08c331e2bb3e8de71b465c230d5d7d478f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USDY41875496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38a90bd0c9981fbb8339569d1e411535f63ac2c437f4a77de9a7317f683411b. 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/USDY41875497.
Medley Luis Miguel: Fría Como el Viento / Entrégate / La Incondicional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dba118df3733f70a96ffb66e50257b21cec842917020e58fa8268926e6b090. 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/USDY41875498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb1461658cc0e3fbaf44e1da2352d0f7379fa79f8e61b50d3c0dcc56bce043b. 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/USDY41875499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0289bd4bdde703ebdb48ea5b5cc5f707a89ade59a789dee10690be4f63c6043a. 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/USDY41875500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c39d68cddc4e1c90628eff3e74f4461dfe2c5d2684078f6d7082e0c10e3ca32. 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/USDY41875501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ab9088430a92874a74826412cddeb91d2f23fc0e89aae446b52b4ea4915e0. 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/USDY41875502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8544434da9d4afa30d82263fd0f1b321d2a660a050bf84966e258fcb148bcad7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITJ871700373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e3c220174ce2d8ab217fecdd52dfe0650e034267dad35ec6ac626384d8fa1c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITJ871700395.