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 0x17d0aa9659d9d0b62305b2bb429cdb64d4fd35e38416b6d5df7c01d69cac413c. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c591ad3-09e3-47e9-b19f-fc2524b428e9.json and https://artists.proofprofile.net/proofs/artist/5c591ad3-09e3-47e9-b19f-fc2524b428e9.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 0x45f709edefecee653daa600d4ef7537e4423a7707985377e7395fb8d5530de85. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA082212649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea1fac24e79bf664b0160a9c57089516f690727e6165729e8f1891b7bad0dbf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA072267830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5742315eefa01ac0a908f0a19906be819297a25ae4b1c69ae16572ed2ce1783a. 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/DGA082212656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ac6f991ef4148c308c08d73bb2e07e7e146f41ccd55f09d49ea8839803987a. 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/DGA082212657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17c6fcfa8b2e1b651d801fbacf81b185bf26a1e6d962a9e9254107bc2200f9. 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/QM6N22017934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5f06a4ea7f699a0ecab5e7324b11812c8d3b4fc14994d0232e1db27adf6aa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N22022607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3b90f263149414e6fec454b98f5646a7bb4d2d48c6aa074e7a1ef6b3414a71. 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/FR9NG2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fcbdfa965e0c5c1968b16c6f9db8218f347d01cf59122bb38b4a2b6947c51d. 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/FRR642101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b503dd3362daac5efda8a8a2aa2311028a7797eb485998b1ffd783773e3376. 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/FR9NG2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d80f52b1e29f192963194d3235a064805c8e37ef82e88d22867f7f68566193. 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/FRR642101361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc0c8ff1ca1c1a0461412576a69e108463d2f377a638d6bffc99a8d080c46e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9NG2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39160b2b5b650ca869cd21ebdaa4ed63c29bc7a58a203bc30772cce3cbf5d82. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRR642101180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a85a82d12262e59d84893361ff5e1c9b9072920dec38e76f0fa5fd2737e78. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR9NG2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65dd2c0bca4c5e9c81f1f47f5a9b1a21bd081f35f35f922d1bf7f44662e17dd. 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/FRR642302180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d51584d66d6345bbed41e6bc713fd65407859e5f2d39a6b658bbc898a07f7e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRR642300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0becdfe9643e97b6a060290fd9f1bd60e8fcba6321ec81a282f9f681b2a4567d. 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/FR9NG2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6e54b7d06ccac1d904c91c1ffdfcdf4b7a63b75ad1f5a75754dfa214bf658. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRR642300772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de9b19f4cfdd454fcd8512a1c9d3adbe398962b8706109a9a5d9b3eed49b941. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642300773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba21afe257d1b31f3dd512b0626daab07dfa514707872faad8eaf75cdf213e4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9NG2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d666264907adbccd47d287e522e29700d545303c0b2907db64db0bedfa01c75. 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/FR9NG2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef93f4a16fe857dedf6775dbf25cec5b75e6bb6c832218ccb04811f9a96653f. 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/FRR642300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbbf81c002c2c6a5e661ed567967c2f0b1337b206818264def5c2ec7b8bb221. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRR642300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb781c134d281c8f7151bce1e59bd5aebd59c9b365f386559406526b664a5ad. 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/FRR642200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0192b85ee033c2971b07043f193be49dbcab0c7095409376b916a979d79325. 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/FR9NG2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0637fea60f797980ab9f9742eb1018cfefd2347b5e19d57a3d52adefc5f760d2. 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/QMDA72390879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb852b45482d718dde1b9eda556d103f194d037a395ce4278b9eb74bb049b1a. 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/FRR642100444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd132f081b067de4dba8c24e94e4f989d910f0f28f345b876dd802fad38242. 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/QZHNC1909367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99159bb7fcd0cc7ee8a45aa053b5c7063f595b021840a6d02dc1bf2ff8dd58ac. 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/QZHNC1909369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce750ade98c1b58fd9f38c2230f1103ae65d4d99601b2c945d081701435d81e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN91986038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b4138ddb72089f64f8d9674d97c52aa35aafcd44418c412b4cdbe15bbb294d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA72390868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a773b37bd17cb38b99778bcda79d9f67e24b86c601dd468fb8b92e5dc96d89. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA72390869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3554773a572b8375d903b5182d3fac292cb529b4babd8c7f3df61fd0ea9731e1. 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/QMDA72390874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf907e3d308f6ce8b6b8dfba1196c0a579f10885af8cc6c0ebd9a019a01c86e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA72390876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0637fea60f797980ab9f9742eb1018cfefd2347b5e19d57a3d52adefc5f760d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA72390879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c7df63df7b5da007cecf506593c84d010ddeb3cb12fd9fc766047693f66e53. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642300938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eef091f3ecc4a07092a2291d2d29eec1db29feab2f8f50820712c354ec7762. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRR642300941.