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 0x221ab93a6504b0e9330023f612778e433913f86617defc6b2b0e28b3e94ec993. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d87b9638-01cc-4239-bc41-c4ce463e0398.json and https://artists.proofprofile.net/proofs/artist/d87b9638-01cc-4239-bc41-c4ce463e0398.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 0xdbbdb18575000511045770c8992a8756a4e73606a398b2bc89b133d68a9f0bf9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZ4JJ1614832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd60577688e0b3d2afe091ab4986040152dd239003412701dbcfa889ade471e. 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/QZ4JJ1614833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de054eb1c62151c5f0b718c90bec887f54cda0ba4bcfdad6cae84ea8e103823. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ4JJ1614834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77410aa480e71d62fdcc693907327b8b9eb181f8dd312021613759147bb4cf34. 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/QZ4JJ1614837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af6df108b054a601be196ba7159253e53871ba96b5b966dcae431d47a025957. 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/GBKPL1777601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e33478615735f29ab35ec8e7f544ca56e175eb75f4a5c46952368bd4b4e084. 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/QZDA81802099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361ff146c2ef9cb1aab5ec8cfb8caa3847b717b9bf2680c96a7740271a90c7e6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA81802101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e601773839d941b03787051a3371f2cf8922803b3f614694431356e91df549a. 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/QZDA81802102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a30988454236f2a4bf255ac6440a04afc47da5ed98cbe5ad15bc54647a44e30. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA81802028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4e882139ef2cc4d61663f03c269190357740764695b8e2e9fda2315b776909. 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/QZDA81802029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdf27705d39ab8cd9f50e7a44ef224ee7cb41ebb858963247198cc40d52f288. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:19Z), 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/QZDA81802030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991410f280a000612b60c8702bec12e46eb5ed72e18086f9a55024b63b037e61. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:04Z), 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/QZDA81802031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebc69761f106a751646b2475cb4d65ae2d25064985d58cdc176233aef10f0b8. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:54:04Z), 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/QZDA81802032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd60a75d6e2513480c899a3a6534160cc1e38e4c06b2129d372d2f069164a141. 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/GBKPL2295941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa712411bce03f8780bfbbcc30efd5c81eca41dc372d70f1f460582ae7a82e89. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:13Z), 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/NLRD52134026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b0049a8f4d349e5d1ebc30d4f0d339f812711e79c6feaa168e7b1e63df5622. 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/NLRD52134036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794f70ad3c3cedf976203edce0643f990d7e7ec0b1481ff21c5ad46502cf6ef8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLRD52134039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40454812d4d4c8324395835fada485a9cab1d044a143832f60fa11dd95e8a579. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:53:02Z), 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/QMFMG2348757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3421f8d266b0bb0eee85787af2924e81816bf27e2cbceb7bd3080ea749a1d0bc. 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/NLRD52134061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f1e9e5198aaef99bdefa18ecfecccc766b63a2ed637f55c8e232aee13a3aa0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLRD52134075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f1e9e5198aaef99bdefa18ecfecccc766b63a2ed637f55c8e232aee13a3aa0. 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/NLRD52134075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee2e17e2c4c81320fd7b824c0802940fa4930876f8dd0019ffdb4e5eb896367. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/NLRD52134084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648e9567353f5daf256a625677009fd26562862e3acbe50f5697be43495120fb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:58Z), 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/NLRD52134086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd3e2a55fbe348c8e4ee314a4391e1a884bca9ded8b97fa2b7e24797d31a49e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:59Z), 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/NLRD52134087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097b2d83220b90fb4abbd5c52f40a75ca45d2a71c7e38c77253a1a00b7221485. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T11:59:05Z), 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/NLRD52134040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3421f8d266b0bb0eee85787af2924e81816bf27e2cbceb7bd3080ea749a1d0bc. 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/NLRD52134061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bef74c3f7614beada43b8de251f492d4294395a05e5813752868f0690f9054. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:08Z), 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/NLRD52134088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1070cc09eded34b7d25273cd89ebec7ea65bd2b0699d7ff0c7fbb1a6a1720264. 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/GBCFB2300726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2471f90240f55799e1f53f376f7ad689bbf9d92d81698beea3d03e83115d838f. 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/USQE92400289.