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 0xa31912e1d8d6a54429c9099a313d7057adb58e6184ba5e8f28441cb83c76fad6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11510a02-f710-4b5e-bb4c-c195eca25883.json and https://artists.proofprofile.net/proofs/artist/11510a02-f710-4b5e-bb4c-c195eca25883.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 0x6994a6c00cf771f6881b900f4207db34af65e8fea069070f83d98bd0245c39e2. 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/RUA1H1766704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd3ddfe6b1bfd69e8a51b175c1c76edfeebfe74035415715763aea31ed33fc5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1H1766700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6cd120664271e48bd84cb0751f77e174a6a419736e4995ecbb3bd98a576205. 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/RUA1H1766706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa2649adbb51f3a9e1a50ef2eb38d9ede2b9b0108dca711a44c90f8fff4b975. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RUA1H1766702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6d64aab25f9d5c97ca7b56d2efe2613ee0b3ec8c7b8dc794ee5faddd3fbe75. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/AEA0Q1888515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4b33a8b98f2225b1df05c8247c489295df89b0e23276823d7d6291b50e0ba4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AEA0Q1809709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15161ea4be2aa159f7512a97118f86647fd363b0a1fbc25a80c8f0e8116bc315. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:59:53Z), 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/AEA0Q1809707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeccf59377ebe3997fb74d76a30370367ab71bff943bd3db1e2712cfdf306b4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AEA0Q1809706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf109586e282859dd87fdcf752efd8a1ad0bc42c2f03b10318df95c4781f792ef. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AEA0D1984844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff82e5dcfda166fcf36b245a449722ca15afad20ced2ba3a6582fdf9ca5d351. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/AEA0D1994965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1991b640cde42a6c7cf0a6e6635ac62e637ca7b4c538b3678bcc76ffbb7be21c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZHZ51918738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf06191f568784cced3b1cc19e1c717d801e6094dd8febaef2132683030653c4. 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/QZNJX2007720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca735775d94bb615ce35553cb58ac5ffd890cc69bbd8a5d087eff48f11b296a0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNJW2152088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af0b8b95a72de203c156eb4fac02bebea74bb14292a0be0180529940190d1bc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJW2233705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feb028d5608117d2631a1e3234befe1c6a1200c6555e69fe310fe51c20e7ec1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US7VG2292262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5b857ef30ec8f9736fa833a810039b080f55062fbe66cf0252531d3cd037fa. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:44:03Z), 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/QZNJW2233707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fe08b0f824bea405bf962f1fd32a813e70d30dfbf0815b01afa9d9d0b2b06f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:06:04Z), 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/QZNJY2137087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8b833791e4b308bc579c7ab10b538c22972bebcf7b3ff687cd3b59f83c47f8. 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/QZMZ92345215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c649d681a78ad04b1fb8f7aea1ba2ee81e941e244ebf949dd08bdcdc75b189f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTVM2334726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c649d681a78ad04b1fb8f7aea1ba2ee81e941e244ebf949dd08bdcdc75b189f. 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/QZTVM2334726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c2798284ff9703916ecdb8e5099570060ed699b063b65b9076638816e1a35. 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/QZW9K2352622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3018cd0ee2986381b92f453941cb5b5a58b0157f7593f9b5fed948a88e68db69. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZNJZ2390465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee42bb69fbe7fe3289d0c092c371bfc187490cc94b218f2a1fd1c95db7c818e3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US7VG2345389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032a54923ec889dc95ba11736d877b4aa5c318fd6e291c0e97182cba0e08fac8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:47Z), 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/QZNJY2377080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee93d6498aca97a3c72d3c24127887bb79d79f86d798899e10785c97113cd98. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZ5AB2389011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a5a48026795ad7eade0cde509ac0dbf4ee5fd7ed2a48d9a9bd78666a8db3e3. 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/QZNJX2411654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca456ade63435ee51aa153822f4d84c00ee56e55936c06f532d3a120267bb91. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ8A2408661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6b97fec108c72c729b5faacf06d9050f404889f0b4286728dd69f8e259e492. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWDD2508434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612da41157d70a5c5faddb8bad592c812104d8a521f0963f37e5c4acb426104e. 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/AEA0D1957346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858941aba347c13b1979e34fdababfd09bde4197174697f9d1936fb412d31982. 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/AEA0Q1709484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d69dc7f4d338713da8bac40d549ccaa02c426c941f17b9880f9ae7ee3f72fb3. 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/QZNJZ2337540.