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 0x6528fcd614864589b4146201bdfbb8d506b3ea2161c51fd41ae8e7d31df0f8a4. 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/0d2804ff-4658-48d0-812d-eb3d152b2b53.json and https://artists.proofprofile.net/proofs/artist/0d2804ff-4658-48d0-812d-eb3d152b2b53.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 0x89ae84d46d683cb0954503eb9ee8dd842b0ffde8d3149cc3e237462d25c1858f. 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/JPB671803212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae84d46d683cb0954503eb9ee8dd842b0ffde8d3149cc3e237462d25c1858f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPB671803212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540a67cbaf0436161ca6e4aec8b7e0307dd1f111bc771b14da5ae4d1fec1a605. 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/JPR502510392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc099f1edf2ab21ac7168de575d59f824f91f6bed66b75f6895b5f5fb423f29. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:38Z), 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/JPB671903578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45eef428eada7dbe1dfe2d69b102ef260feff5aa5f29891c1f5d353a3bca093. 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/JPB671903580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d2c0da6cc284df3fa74e19044fb753f2adee090a507c97070a17799586bcc3. 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/JPB671903581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef90f76741f3430a70e14f35236701c024b309134b16f799a09aba423aa59fe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPB671903582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00183699a15fc49f2fc42da9a69fc430d74bd41b5f7e455e2322d6993121981a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPB671903590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d2c0da6cc284df3fa74e19044fb753f2adee090a507c97070a17799586bcc3. 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/JPB671903581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef90f76741f3430a70e14f35236701c024b309134b16f799a09aba423aa59fe. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPB671903582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a28293e2771be3785943bc17922b5fa61ad94e053692004597aa504ae82596d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:43Z), 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/JPB671903583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ae54b24c388b6a7506181971326f7e13e40ca565e7fe5c1ea14c0fb11b6f4b. 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/JPB671903584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa610b328a12386a4af5d7122e5d2b3d748fdedb3e97d1fdd762c583dc46e0b9. 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/JPB671903585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63c46f786f4eac7e22ad50acb2de5a8b1fa09c0b9c06912245a7b8fa48a1eb. 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/JPB671903586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec350c94b633fdffe233b02e20e8e62f1507cb1e11cdc1807873b56eb81fe05. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPB671903587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d5213a3eb8bbe21859af822cf75b47aec0b5e69ce046af8e6c98673d21d73a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:13Z), 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/JPB671903588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7a08a9bdd39d5ca416145b0f9c56b11b55ce8056b25992f9f23fd0d7fd8d7d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:48Z), 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/JPB671903589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde59e2f30079dfc23ceb04792cd780807a4c805455294b3098a061278f33ad33. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPB671903592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2146ef803305edf584d41029ecb58362354e4f2d44c8523ff85e64dfb6eca7. 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/JPB671903593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c74e4396e1c99e53040db1859ec583a22592fc2a766ef7362c6bd897ce3c56. 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/QMBZ92114652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7009192430dfc4b90258cec8088c882190891ae99a4e3e12d56ccb137785aa0. 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/QMBZ92114646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c6933608921817bcbc2da7632d0118e69ee182e8e8a2287056aa1b734f60ca. 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/QMBZ92114647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c74e4396e1c99e53040db1859ec583a22592fc2a766ef7362c6bd897ce3c56. 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/QMBZ92114652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a3b1aba3f9832e6e88f79df104475bc507c01408899cd70c146528f75f28af. 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/JPB672304499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc05d6ae65e86b999b96c3020eca062bb7b26223f0ac05de41b49427ec8cbaa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:00Z), 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/JPB672304501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c7fd5171efbfaf0f6cb85ce14ddcfa31a0c960cfce40024c1a3fff81cf65a4. 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/JPB672304506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb795c68cf6926b7af7ed7a33a03512d37506571fb2aeca5afa14ae47f4c2bcd. 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/TCJPY2475036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714ed7bae215c2925e985eff0017f40d5ca91c7dda8875669930bee1677ebfb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:51:02Z), 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/TCJPY2475049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2409e19e01157ccd323d6ee15ae8674333c9bcfdc38383d0ac70e06c8235a0d. 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/TCJPY2475051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e508ea3ef46c62dd53fb88a4ff655e1bffce569b89428d98897eae554f23f61. 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/TCJPY2475055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb320f655c3617d35e67990c7f335f57fe310c378421585ef2c5192950b7a7. 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/TCJPY2475059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504fcd0c850807e26b2eb71b37b4862af981895d7b4a5f760ed509ff84b46900. 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/TCJPC2437444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e6c1892560cf1b572559df5957395f9a86b9d71cad14ef00cd29e89cb2b612. 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/TCJPC2437445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5069c5419a00e8b51880b8a5361234e993a60ce34dc0a4a98c2f75adaa64df6e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPC2437446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd281affd37761a64af6804459436a99e54d87cbffa55ed1c1637bd73c1ba22. 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/TCJPC2437448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5286280421bfe73f640ac8b5aa32034c650f85f16fe97d4f63e5a26840cfc5. 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/TCJPC2437450.