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 0xa9c8eed616b82d416afcc8c247bdd26626af9cda4df1a121d692435a33bdf643. 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/0616ba69-12e3-4998-b79a-d7b37fd74732.json and https://artists.proofprofile.net/proofs/artist/0616ba69-12e3-4998-b79a-d7b37fd74732.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 0xd89a2bb1a1d51264c9153a7cab152390f29e5cec088a0ca9880395a206a8f502. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/USCGH1970131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa859311a6009a9009b8f3ec9b5885ecc890908de19977286930cb54208889444. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USCGH1970132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61778de2c570742bb45c75ee01c013635cbfdf2557334f131220b769e68c85dd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:37Z), 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/USCGH1970135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d5ac70d9f93d50aba7fb67e66d3060000469584bceecd83c2b740dc55d26e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:59Z), 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/USCGH1970137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85569bcab126a5caf143152c7e41c504e88c77ef00f4d249cd9a65a812bfa6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH1970138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5432dbd64d08747290ca1572e240ae559f483a1de94347032015aa653913a70. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:18Z), 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/USHM21947098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e2362f96b9014fa071921191acb95d32cea4c2101120ddab4a1402f28491b4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USHM21947102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1770c6643151f2e11a398b4cdc55ebba812f7625f0a1f7abbae7221b3519382. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USHM21947107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a21b3db830fc63aaca6d4c5771b1298c716a01f99ae421317b04b70a8a718e2. 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/USDY41933289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfd5528994763ed1fb3c7953325cfa33dc188f9756715f6e836ed47242f517e. 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/USDY41933290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcd69677c4e523b9f079e1dabea35adb3d91178f743d13dd52908680d8e9e41. 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/USDY41933298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f02be4fa1d4a6631d680e982c495ceccec9ee1d0605661eee2d67a6b0ec89. 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/USL4R1947993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86243aa2aa4ad85a404e5889c19f66d0b0a5d4b0526a28cd1bf0b13c6b6b73ab. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4R1947994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38ed8e713e59119e052c615737704957ff2068f5d7149d42b311ff595decc28. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USL4R1947996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94df8c26ed62cf697ba04a9131b81e951c40c248df27270a6a9265162d22459. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USL4R1947997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3ea65a8cf3471835cecc4b75b0aeb1a69d01d52e997f324e1abd0b6e40f4e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USL4R1947998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e517625980f1e7b024c5f2c51ae988d0f2444c1952c66d706fb812ec6741a1. 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/USDY42096979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce39cd9b2766f3ed869a7f093761a6845bb34862c257b0a06dd65f0bf5fe8724. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDY42096980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d5b7c3a7a2f1d6a9ed7df18854f79e3b71c9cd505925a449badc31fa3c6f59. 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/USDY42096981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c50e4d3a6dc8e3cb4373c8021776331193d7611bc9c0280c1156902c617c4d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDY42096983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc049a7d34bf02b4bc0c652ffcfc52caae2eb8712fa3af0d582481a539b3568. 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/QM6MZ2119445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb62f2847e9ae39f490a2eb3c2bc16016fe125a6a9eae92dd6e8e3c63bba6e3. 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/USDY42398877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7f22787f764f42fd39357ca19cc9267d5c12b0b0e40951ba93fece327d2c93. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:56Z), 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/USDY42398881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0864e836a2f411f7466994c5758096af1365d0bc7f05839a7c291d3fa7a2e3. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USDY42398831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3781b0c628e0876fed27bc748f294ff83f6a4fc12ceb85717b6033cabf7bec. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USDY42398834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb295ad69125bbdbc5b4ae2303abd9e4fe8ba14ab3d17039e1365e658c3766284. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/USHM82546813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321b1dbfdf991a459f69052849d6733281c0bae6d0586db4012682c26ee6e337. 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/USHM92538398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486446a5783a180239baa889391cca9acfb0132177f39713613febf9498b85f. 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/USHM92538420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2481c613f0df9cdfc24b4c1ba662f8e6936a4eab2f9c1656e8e0cb8b80a68cb. 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/USHM92538432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f5df9df7980b3323e94ab4cf39038bb890cb6ecfc51bb89c6400451bef8209. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/USL4Q2514932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1320d31d49111aaf79d9e58e212f9cec767db7a6ed03e4bfa4f29cae3f63c7d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM92538382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a7468efbffe57685a17e9c65d776d93040ca3552e6004705fe9d08b631c2f6. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:10Z), 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/USHM92538383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b5375f2ed983c2a099282652c9468ad3bb860615b64ce9a0331e800b620c70. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM92538386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded4ad3fa9709940ff5ec2c96d1ee9a2a3c89c3b87d6ae2dc4317680ac69c30c. 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/USHM92538388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb5db5b660af84ecfa03faa173fa3e9c116a9c11f5b94e7ace8efe1efc380f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM92538389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fcf6a22050129f06065ce5d864f17e611b8b7b25de54e4fa9477e91f5e6012. 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/USX9P2530895.