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 0x92d63bb66d53ddc5152c0139edafaaf1063bf1a47b0aa2ae908e318b0dd334e1. 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/c6f0cbf3-4828-4f67-8994-24a53dfbf401.json and https://artists.proofprofile.net/proofs/artist/c6f0cbf3-4828-4f67-8994-24a53dfbf401.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 0x7d77017e2816f97cc882f4a19edfebcba468a83916162e53703c3958df34a1a8. 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/QZNWU2406987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2831ec583cfbc6c86c7026b136ed66a6f6e930f9cf157862f2d965d02e62a45e. 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/QT3F32408469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80b4b476b69e4941a79c974f9cbd29211056ac830e75ddfbd25e8ffd4d65d00. 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/QT3F32488543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8999e59c7ee32f8630f032a9f8c8c4ef5a8350dd350c3fc46a15fc6307d8c7a9. 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/QZFYX2592966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf898a109a3e91e923544c9a53eef2510a9991779f67ef941156276b666d91. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZFYY2562285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81237eea21ed6d93b75b5186ba9588384a7d23e4a2d5569cbc5b61bd9cca7e3a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:51Z), 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/QZFYY2560573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957af7a5f0e9dbfb6ad42dc6a5dd55811b7ac58ee8bc8c36d3bdcd653d9cbf27. 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/QZFYY2596641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e71d9ceef3849bcf24d1b4935432fd668d6c06bd261cb14dd03353be1f19c3a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:57Z), 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/QZFYY2596626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acb70f82ccd1b2fbb5e225aef568bd6e1f5f2a25fea0b76c413b46bd57b5772. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZFYZ2535316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b008b5062d36dddc9184a6ddfbf17d14088fb760a8f79ba3be9d04013feaf5. 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/QZFYY2596613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc66c12ddefa7b05c37ecd46a56a753320d426f9d1ea9313ebbc805d107bef9. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZFYY2596627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21311d84496b6a48a40c16215eefac5c72015e9bfe44fa6184e23a0382c19414. 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/QZFYY2596685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11ece61883a885a9eac9aeac9e84b01fce6ee7b1ee45e6b7c62493480a551cc. 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/QZFYY2598479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5822f52fae6043f2cf1fc1c68c177b358feb437e759c16ff6275dddff7768c3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:37Z), 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/QZFZ22558266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1509ec4e96d51f3407f4adcf1d8c0c1af3431c99a57029b5dd064937316000. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:08Z), 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/QZFZ22558211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191e0da5cc51ebea589552ca606090d8e102c2f77d67e8fbf9ef1fb39dcf2099. 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/QZFZ22556675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78689798ff187b810fc91f0ad0eaa0884c9124064cccb32c731a226fdad6a93. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:48Z), 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/QZFZ22563617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6325fb2b9aea28e1b9a5ac448a0705f6265a7f274f986c2ccf7b14b5fefa44. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:20Z), 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/QZFZ32515337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cba2e8172097d8419a87c2cfed717e2bdabf0e08947af18afdb8e2ffa16d09. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ22562229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0ca6d6c4100b1ef839f1b3a5a307d476003bd6567a21f4366744732ae5969e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFZ22562266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354f21d5966146f22347f33481892b21f8257ea9e6226bb975430ab52efb87a4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZFZ22562385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8cc46ef4f36dbfb277d1cf125025573cc2acb99d22e7483576d143de6ba8e4. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZDA82526053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e1ae50ee0705bfb26fa1fe4f1ce4542be97ff3e2d95cf3736273639565b6d. 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/QZDA82528269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7719b83c703993bda6a8fa9d7d53dccf8d8c83c700bcd1cdcf3c07c73a324108. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZDA82528251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a298d1fcf190f0f8f4cdfd6ec5ec1dd8476428184ca0a9c0d7b113e443a68ce. 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/QZHN42554354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5045a61a76339d1a45525123c35b394d6377f7e9314f4ba6ac332e4c2eb841b9. 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/QZFZ22563597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce27812d75c531b02bf77252a2ce73ccf9479d5190e2207f6a488e50a44e344d. 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/GBRKQ2510390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098351ef7a3338468ad33f17a9cd6e02d9f39ffd587b4926b8c3f33541aeef56. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZHN62585013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e669b02d8ae00c61f542cab3c2d8416e9cd52de003da68ed5bfeed9a5cc0ebd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:53Z), 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/QZHN72587753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2d720219a1b707bbb1f91cc03708a2f98c5f97a8e82fe493be4e6176599ba0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:34Z), 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/QZHN72538676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355df343fb54aef3cdced7ecf30e40ae98b6f4ce9c6ab1c3e15937f62335f95e. 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/QZHN62583560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e4a338d8ab1e369734420a45ac3b93ecc33478ba9f4fe823a2c45834b0f00e. 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/QZHN82528857.