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 0x6b0cb7ae5a1fddcc92bf0615d1de6a95603cdf5f94cc6904beee18be7cfc6bb4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e36d46d-a449-41ab-97e7-d3c50431185a.json and https://artists.proofprofile.net/proofs/artist/6e36d46d-a449-41ab-97e7-d3c50431185a.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 0xb31af71b09b7053319a33bc97e2c8838004db1f3135d54736fea83d5114dbd65. 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/NLG661100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d557c9a5103dcd8b01ab154da9ba5e894d0d9aa7272244a15a2cac024059f21. 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/NLG661100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe421e266aff21c9ebf209a51c2a671f3fe16ea04bf14621ba27e6e522e101c46. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/NLG661100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6907be65178e581c19263d8a778d85c8778dc2cb0d356da33b2f242dff8ab10. 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/NLG661100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0d38ea26f30088292545c681a0c5b68792b12ff69cf7e22afe70821cc551d3. 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/USHM21309770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd32c323f369dd050c12aa6442bfd93fd69efbaa2211aeaddf29c94b2ab4bd2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NLG661700984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97518d2befaa5615f4737d1e7c79d1f1ac28bb55b5decbdc7f9b60e695c8910. 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/NLG661700986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a801d0475472a48b23a881c14432c0815409f68501f8eea3c7704404d4a6f70. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLSD41700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a801d0475472a48b23a881c14432c0815409f68501f8eea3c7704404d4a6f70. 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/NLSD41700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b97d06be41f33ce48f163474273ff099d32186c28eed0ef8834dc8941ca11b2. 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/NLSD41800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df842ef98c1851d014f81a174b520c6ead970b0ffe14cf64ce4db94c29907f3. 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/NLSD41700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9cf79ef8ef5ce2c26572e7a7de1d11d07e14cf753746e88981c578fe6206ce. 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/NLSD41800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ac7dbb3dd3d146a5cd5ccdb5c241a0db286c8f213768acc2987e0d7331d927. 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/NLSD42100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee6fb3017da595ecaa2d31a4f2e464ea3c3a90996d89325a1fa1659809c045d. 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/NLSD42200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3467ded11a3af580b403bc5e65c63c191d8d8341bfa9e1619c477db336ec5df. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/NLSD42200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684dd551d31cdd6043d7cc72d651fa83a3c79ff4516497411bdff1e01a0aea7e. 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/NLSD42200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546669e705c1d54ce0dc35c7959845ca69af740585909897eac13d9dadcea4a8. 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/NLSD42200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427a5c5bd7e4e027e6a849505cc64ed5034f557f4427a97fae519d9c3d4754d. 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/QMDA62271228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427a5c5bd7e4e027e6a849505cc64ed5034f557f4427a97fae519d9c3d4754d. 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/QMDA62271228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5120d999103b1e359044dcce422e95acf1dd9bcf7222c8d84d7909db1c5261. 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/QMDA72224592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5456255ac31aac917089ff7d297d5b08aef385050d27f0130304abc582ac6f78. 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/QMDA72298698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f49c2dc22cfb4db228216daa4a8ab917959f1b9985c9dcaf6257b5ee80a59c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA72219785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d43e4499ad199b8c78ff5ee2e23ecfe8477bfba6d0600cff48a4249ca82820. 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/QM4TW2417422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9589ecd881dbca7a2d131eededced41bebdcd28cf6487dc024e46f5eb3b184. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAID2491670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe73ac976cb2d25af38a9458f61e0f35be391861b805ec798597c2ac60205f. 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/QM6N22481930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e5c4c088e6e73273b286f4ed1e56013392e522f2d1ffef85e845aebe4e4276. 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/NLG662200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9f97ca0db93fbf6166b45fc4841d981bbc754428cb1f497e6f74739ddbebb9. 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/TCADI1760836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5e8c97029c3a20ebe960e6d340637096f3eed4b0d965bbe1dd4c079698d5a. 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/NLG661000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3b3e05e7a9f63852f316e89dae644bc13ed30a2cf9ff27d8896009d49ebd26. 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/QZNWT2087142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9038b383eb800decd7d90813bc96553df9fb1c0cbf138110f793725d7408b008. 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/NLG662000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55923bfaeddec7376902c2c1511e2db9e8d3554bd13d9a0b45b130534c85a3a. 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/NLG662000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2650d2886d9df3bd16f10693758a6a3814bdd82668d1bafed3908ad26e4673cc. 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/NLG662000822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07b04af91a90a17c90e8d3866302dcc22e4468b954e75b8c0e524013f3cd3e8. 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/NLG662000824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d3642c9082fa0172ad244dc736ea4894869ba3de1d353857625c61cf3503f8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLK2U1800172.
Avalon Cypher #2 (feat. Tarik, Minitrapper, Sepa & RBDjan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bc8c68e8e57867764ed6dc90e24a0d2c401d83eba174e1ecc7be7251f362be. 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/NLX1U1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab67dc15089ddecad1951cbf35ba0c30cfba61c9386b286e202e88307a145ee. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLG662100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974183f31592f61d65291960790056ee7734b3a33dc36e80ccd34f6bb5c25f9c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA41816072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ee0ecc82d52054b5bb4bc6d1fa8b68a566989f2fb9205d22ac6fc4e95db675. 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/QMFME2375777.