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 0x5cbe10a9064824c4fc89441d93d242101d2d6f3954102303f60e4262c3647649. 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/1047007d-574d-4e0c-a7d3-d041b4c68d38.json and https://artists.proofprofile.net/proofs/artist/1047007d-574d-4e0c-a7d3-d041b4c68d38.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 0xa132e231ace435d1d9ccba543f882f27c67658b949369a1b431196c3e4356ee9. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZZ7T2543456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02843556d38d793a2b7717163323f4e1a8b65d6f1d5787838277093693a3d2df. 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/QZZ7T2543457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7a82f01de2e8c8498f032a2740a93497995cb1031541e7afd38c8c0bea0d2e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ7T2543458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef590f9eb76b3ee1f593f23a1bb80865379fc09898aacf030750da1031fee116. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7T2543459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94721bc122d61018aa3c46c64869f86eb590cbd52736f9072b7e5de0e684de7d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7T2543460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3961c219daa7914584e33ac40634c18ba5194d9fd14c8f0e27d0641e1cefe5. 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/QZZ7T2543461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691ca1dd1f582d0f0cd4e760a60339fd231987555ed2d8f63de983e45de0e3cb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ7T2543462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f478b15eb07a66b63c9b3b145ea349839750cf7e4b29fbed98fe6a4990048b. 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/QZZ7T2543463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a96768f7432a1065942915a195da83c2e2d2aa090e085152c36ecf1b9453ef0. 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/QZZ7T2543464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082e7a67be65faf2e2208d249332e4a3c0d5279be0c16e612099c854747dcc28. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZZ7T2543465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55023fb8d30700c8f4b1cf1331770f5d5971fd1ed842d20d2d817ba467d24329. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3F62555526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4113d26c2361a6604a365033c0c2cef294c4072b88cf9a9c72ed6a04cc07d9a. 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/QZZ7L2508150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459cf02947c7d5ca3197a754c411928b591f292f9fcafd6b41db8d80a500d645. 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/QZZ7L2508151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba38ded0589cac9ec1cfd1fd6f972fd34c1ff20be9a83348cb71592236626413. 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/QZZ7L2508152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb0bb24ee8f50c24be9721c54cb43baa4e0c3e151d9173c90e71d46fdae399e. 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/QZZ7L2508159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f2daf46d7ee25192ea3d232dc7f566502435714ed14bea6ac25e5058a2b98. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7R2539708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa45265e107879bc175af5e249036bf0ee99ebe8f91eb6f0abf3e8f3d7037a42. 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/QZZ7R2539709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cca7d29dcc2a31c2b940d5b933aa8438b9bc12ebf748536c88626d675d6340. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:31:27Z), 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/QZZ7L2553704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eabf479a2dc7551a586f9bec79cb4820329c3d77b3226d96516cfdf2ffaedf. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:47Z), 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/QZZ7L2553705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba32e1f3dedcb8c1111b1a8180ce0fa6f23fb7be67c4ccfd711e775158f973. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:09Z), 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/QZZ7L2553707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec91c3f73b0ea3c455cccb602460bbd17e36a4cf3d31623415278c264643f64. 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/QZZ7L2553708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bf1aab158ea1fcdb32ffe31f6c78f77ea6562a121b20ebd91a8d26650f16db. 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/QZZ7L2553709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdb8e61d148a5d60d77c6cf1f59d77e5a64d694b911fd2d03c463d6b1fb5ea9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:44Z), 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/QT3F62555517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597f3ffecf21707188558b5c3af20068e18b17ac27814ca65de510c90301ac44. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3F82540544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfc22eca847a1913fdb2684ec7c209d606a17852ded98214b0bed81c2183221. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3F82540545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c13d13c0707e4465bf4ba34eb4d7634a27a131f796542dbd4c890c6c1feb00f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:17Z), 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/QZZ7R2543555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0511374f7bffbfef716133091cc762e6c8db6f49f938859e32277a5a94c8d2a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7R2543556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311ab7e26c285660180f1fafbe4d1e004207b463e160ae0c325d712f80bf25b6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ7R2543557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eca17424b6855f1d16aec607c27157779b8d5f2a1a7ff43f721d300ab92f8f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7R2543558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f75cf77325b94961f4200403302c4d225ce2b16da6625ee155b981a6d82e29. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7R2543559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97798157720f0b1aec1e0e45bba616e51cbb654bd7f26ec2fcff66cd512f3843. 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/QZZ7R2543560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3372654b0d86f3dc181126490f7f3a92050835c4b47617d739a1315d9e0c24f2. 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/QZZ7T2534571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edd203ea4416bd3df14dd863c44233f93b3b36e051fb290076c7f37d84b4362. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7T2534572.
Flowers and Girls (Versions) [Special Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8558feed0d65f18f7662142ea78e57c48146e8308a77bb3e8ba697d8bb822cb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:30:04Z), 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/QT3EY2559916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5bb271a599a52edc0ede7ea07224eef14d9c300d99ec8f3e5a720f08a292b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:12:14Z), 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/QT3EY2559917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55fd2ba8bbfe5b06f6df72f86bc6b38a0729d0d88a54e6e701bb13cecf2bc45. 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/QT3F42534152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c88b3019eb12b10213a9227008325acc748d829e696641d0db5a1eb7b90cbe. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3F62555514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf830b4b0cffacaa0a2d0bd4b364c90da83b6b246308da4c078bbfe8288c0653. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QT3F82538147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a470164ef06ad64b772ce8a696210c0d33caaddbf76fc47a68e721d32efe31f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F92547975.