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 0x9f67d5b2a473746d35d7957d07b9ca430c49a5dcb14fcf4ab7a2874ff2e6d3a6. 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/801d27a9-c61e-4347-b22c-7e74208c9ec7.json and https://artists.proofprofile.net/proofs/artist/801d27a9-c61e-4347-b22c-7e74208c9ec7.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 0xa8722f94dafbced91ef5384d3786813de4c51df48386319cca777cb836e7483e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2376983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896644c0279a1868f37c983eb8a7b5b35b92b70e9bc86f5bc88295cf62f9ec13. 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/QZHNA2007489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803960e1cff3d5ef84709562313ea27baa5fd0c74e199197983bed50fbc2da52. 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/QZHNA2007488.
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 0xd46be191d83ffcb04b0b235ec4039b358376d6ccd366b6cbd21fb2460aa8d1bc. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZHNA2007490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92617163b36c144a10ca84e075c423aebab091c010acf73c448978668e75f08b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHNA2007492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3c7a60b51fd79b1cf98843284927822c5afc8cc0611ce4fe8cb4c7cebb17d9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZHNA2007496.
Da Club Was Packed but I Was Lookin' Right at U
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2320f26a59151fa8f7e99f636d6b0dc0465ff8453b39a4153005134b64661187. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA61855363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34542a4c590822f3ef043a6b339e5eafdea50da9e4f4b8117ea70bacae6296c4. 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/QZDA61855368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eff58fa3367a921f15b5d7d611b1fccf17ab5744cf763f3480e127918a3d6f. 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/QZDA61855369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105f55eb45976fda5cf4bfab44f3c8b38e0580b5784a4128645c9c704e14e52f. 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/QZDA61855370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab502c25f0add5e9725b7a71380a34bc52e3e0348c317b29cf0c6d6cc85010. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA61855373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a8034e10ff280fdf1271fe48013da33c3a5e606c5fccb893cd30ac209d0ba2. 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/QZDA61855374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe9b295b3ea3fdbdcdf0afb59ce029c4a31a9721bfe7782036cb7f9fb24a118. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA61855375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc274189e0eee9858d5478f7e6f30c30bc6e428ff5904f217bfcc9c69f245ff1c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZDA61855364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb64813ad1ed9dc3135a2ac5e98a83739d58d721717b8634aabc53ce6a4a22c3. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZDA61855365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cfb1502093b0c14f2cd75638721af00c71fb1af7250a053a6f8cb995044837. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZDA61855366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e80c15f691f6c31708e5193881e758d449f145c8e92ce88f17cbb07f534903. 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/QZDA61855367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac9885256d232903dbf4be4dfa7bdf8943eb6169d1ecc9b268fd5efe8671ef1. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZDA61855371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe09919470dc1fa8c461b2096fd7e30f71553ea9d33dd36a9479199254c6512b. 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/QZDA61855372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f4d1d16877758ca2424a06608990beb808e788aa34e4c9b6ce20edd57a5a89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ8A2304053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea86c484c5aa374cb25324e4b84c88960ec24e9f6f73f136a8d9dc599706e47f. 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/QZWDD2353783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ece29e62d960c07659f1bcff76553004344d0b4c64c5009d5a4a1d0244ef6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62381405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae3da4249c7d4bd820f2cd87d2227e557129c1a8bb376a46a85a4a4c22903e. 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/QZTAW2205881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2a991a0d08246c9ae7058b1d9df8fa37f4f2bdf2f3f20553f308f1038d3b47. 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/QZK6J2230165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cebb7c07aa7a8c1de8b66e9857df4ad60fa49facd0dc4a39ea065030e4c2a49. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2246065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b58df581796e66b9472fb10d8d79fb573842a4223dbaa6c8233028e35e0f35a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWT2231172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d58345c639ce3d40efba200fea19a451265c3d049304f4ac2130f0225167c4. 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/QZHN32230512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4551a547be40227f2572acdeb5ebb9b86632af06aa942b1412764e302d160a. 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/QZPLR2173037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5611608f71c5e163b27e5e152cdbdd8827390014c5f6c603069d28e10e42f3b. 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/QZK6P2173415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ba1c6d0d4630bec3842aa311805162f229a31d07a121944d58272b5f4e39c2. 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/QZHN61935350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772e8ed9a6ab4c4269dd3c16808f78934898ef0a6a6afcf38efad617bfddb4e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES51965703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4349bd98e90e324362a1c7d09f5e806ef666a1d83e32f08042de671b06854e6. 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/QZES61866731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11567d00899cf1711f5db7e6c8ea0df6f1027c08542777497386acc1b1f34420. 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/QZES61866734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979c7197a23b4d4f875e4e22e985cd803f6a7df3612d7a191fb30548e2cd2f0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZAPG1759794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71e3bf4a6809153fae3f8c60980dd4f28c7acb4387b7f7483f913e632619a05. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZAPG1760040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1151ee5d027745b9caf3db46c93d25b465dba459ac51bbdf0de6295411e143. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZAPG1759439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aff8a861d3dfe2ebe95b6a9d7680b5841cb4b0840de50750b2e93101fe54a1a. 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/QZZ8A2396722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13578eb8b2f2eb06d5283787251be2821677387661075532c358ac7faf10eeb. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/QZTB92233859.