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 0xd0f89be8f1fe932a253ce9e51e5c2a1306902e6625e4a1ff05bd34be424a521a. 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/834dde73-5eac-4a9a-a619-971374b9097a.json and https://artists.proofprofile.net/proofs/artist/834dde73-5eac-4a9a-a619-971374b9097a.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 0x1ec6f8b806fc8cd2fa6de41e51d7b8271487d23e3bf5f4c7cf23a41206bcc8c9. 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/INL110902450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2325698fa2e502fa98c61bfd49b3925b793e5701fd385331bfea1cf1565f410. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:46Z), 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/INL110902453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26f4e2ba470c8473240662c5caf21cf408b02ee6b5ce428a5fbc1d0c90747e0. 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/INL110902454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d63cc72ae45704abdb47458248537f9a44e3cc9b38911352db710b1d73d19c. 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/INL110902457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0d2c22bb7910742e0b03893c05bc77e0104bdc33075923a4b4dd448cd40609. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/INL110902459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6a0e724bc8999d367bd198a5a6b80588d9f61f99fd5179c8121b7941c47308. 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/INL110902460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4484504fb07f9660467feac95af87965132a6a8b96abd253bccaa60c86d1a44. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:21Z), 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/INL110902461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda19e4516d9fb49599aacfff988141d12a4b59ee919f808b4497c95cb1d3449a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INL110902462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69001916c27f22c4a67168859aac9d502123dfc030c5d213a547632fc7d15e87. 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/USA561228144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f3b4977bbc78f11d28ded5622ded98d09776c22ca198af5085904fdaaaa990. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/USA561228145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151cea95fd812a52b0a8575aeda1c3bdd2e0ec72f158ac5c47cf2f12028c6b2. 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/USA561228146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f484fec097eae8e539189da6225a778386dd6ba90a9b2e56f5bc9a549a1869. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA561228147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361313c1459cf6c6bdfb70fa0497ae1a1204b540d5b48ba2971e17acc9d93616. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA561228148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944940dca96c8d9996badf7675cd4e7235192b0121701367dd152e5f860c3a7b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USA561228149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ac427a16107a6e997eaba6d6481fa3c8818bc533b5486525012a88f5968f05. 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/USA561228150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055c397586c700f9adab7283cee7ec3e4e09e3438b1be6e6f034e0c80aedf99. 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/USA561228151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a358b2333dee39408a27be86736e241dd8d4bbb4e311663b8b25c5bc7e5b4b. 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/USA561228152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6cf599b4c1ed0d218d19b41ee1cd4127515852fe06567d7e96261fcffa75fa. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:48Z), 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/USA561228154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e226c7f27037858e3e77dec5efcd69bf058d69ea391abae74937cd657097e06. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/LKA000014546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb76769c3f499d1d00445c3a643b3d373081b9392c3513c80bd142c6f0949f2. 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/LKA000014563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc6a2647d270abb36501867d840120780d797db1c419b9969332c0f0ec382a4. 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/LKA000014528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101434a250c3df166d21cffefd6d62ef12d909f941a70a2ee16f875d8a6eb309. 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/LKA000011088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651cbd9da42e13ad4581e80fc3f07f7e28f93c9005418ce9cd1c86dae0b58ec1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/LKA000011093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6943d3b13326957d657500f61ad54571d3de27d2c445b2a2036878fc47b8f344. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/LKA000012504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a003ab2009f220beb6aaee892567b33b3b1e63a259556f617b18ed0596920. 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/LKA000014530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053eb9821cbf70a8d51035f720ba8cda0eca3ac2c7d7d729bc2f0552eeb93d9e. 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/LKA000014531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b21222d6d8675c54800df8632977f17cbdc0070ae47dd82f1719105b9abe4. 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/LKA000014540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413fd0c0b3032d351c3ed9fe0b185c9606edf4b6e0da3edc406ab7adff613c84. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:59Z), 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/LKA000014543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8241e48947e2734a0ff9527f779e28e76728547db98e2beda7041248bd993e81. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/LKA000014544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb76769c3f499d1d00445c3a643b3d373081b9392c3513c80bd142c6f0949f2. 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/LKA000014563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f5de855f171fa40d1ccd4121237723be6746a55fcff3382f755ba14df36e65. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:34:54Z), 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/LKA000014573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff82f51e5db582332c2276b740ce282aa97acee1e44fcee08d275205c655ec0. 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/LKA000014575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e226c7f27037858e3e77dec5efcd69bf058d69ea391abae74937cd657097e06. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/LKA000014546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c176e21e8deef76225a36e9dd42fd0bbccb34949386b66de11ccaa0c33b11a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/LKA000014548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb581577a2ee113ae6f4a1313ff7dd2c896fa20791ac996fed69da140f6c36611. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/LKA000014550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6a3405ebf49670ea909016046b3823a640e6222c271f6e0b40c4878d7f8fe. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:56Z), 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/LKA000014552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6544aec41faf4e344093664f96ce0dc71cf23f136a5d1a393da64a85fefa3ae. 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/LKA000014579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c68196fedfee4bdb9d4b896ea499ac64487db1a663c6bc0663d3ce753878bb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/LKA000014580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed48f6563951eb321e89b2503f335da20451884e3fd63e867772d05a0779d0. 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/LKA000014582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1877ec70105515ef7ec5f609c55b4aeb6456dee3f47669fe0ca8708f7bddfea3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/LKA000014588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb14e4a859061c068c00cf73ab30fc588a30a2c7185342dfc527324506784f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/LKA000014598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e011b8dda50e164f2807f7f99e0ee79ac131823357cd2716e94bf6da6fefc60. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZSYP2233833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5b411282f18f6484fb321491fd08f5f30835eb6f4294caf86742727d158e2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZTLA2464013.