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 0x46969c4ee86d52689d5e231d320f6dac8874a5ce0973b8b4b0e6dfe005b0a7ac. 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/476c714a-67b8-4634-8fec-1c006622b87b.json and https://artists.proofprofile.net/proofs/artist/476c714a-67b8-4634-8fec-1c006622b87b.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 0xb2c7bb068d1fae79b1f5132837bb4c64103deea5147966584b322e12155b1115. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA52366252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562e77ce5f8d148ba48b59eee4b9bc88de57e063db9273707faf1499de580964. 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/QZJ842401701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02397d93f497c837b578e6b3f4c2dba3f222d56b94bd123b710d2995998a54f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:07Z), 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/QZJ842401702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24af2503e288b1a258b2311890b90878788dd888eb5ab6bd0eb9fdc045257aa5. 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/QZJ842401588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b675f2dd6831e7eebf16c6787a69250b93b872d2825ed0b0161cd80bb77a8db. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:07Z), 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/TCAIE2416000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f854d190362409a3dd0a11ba1787c0db82b285c510293137d32979ad0344a4. 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/QZYFZ2421979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7abb2ede3944f6ffa0a533768d0b18a9ddf1d7a0de78eaf3b4b9df7b47b887e. 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/QZJ842402019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec4318469953c03a4bd4b3ae10cd817ad24c77c7581bd05eac08636d06ffc30. 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/QZES72414433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b675f2dd6831e7eebf16c6787a69250b93b872d2825ed0b0161cd80bb77a8db. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIE2416000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bf1d4714fd28438655f4115f0bdc5b97136750ffd4286ccf4010a9d0ae6699. 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/QZJ842402389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbcdd77093de5f94fd2b8601264a06cd6d9df842b3bc671642c5ec3537e3599. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZJ842402627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a65da264d0b31620ed6037cf4b4ac588e65a7d460b06f2f28752d28dce28b02. 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/QZJ842402392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6aed368b12966a4598c5cbc5f893fb89141c35d0f433b078d3707daeb2b72e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZJ842403115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe733598a3da6060fe28213c9795a874e0406ded1e92783b43ba1b4b517edaab. 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/QZJ842403118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6aed368b12966a4598c5cbc5f893fb89141c35d0f433b078d3707daeb2b72e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:24:33Z), 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/QZJ842403115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560335c6660e195fc9bfb9fa7274610eb108023dbcd2b63e894b11bf34ae1c8c. 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/QZJ842403116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe733598a3da6060fe28213c9795a874e0406ded1e92783b43ba1b4b517edaab. 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/QZJ842403118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8167b74ff09a69c62415b57c676c86c11cf5f23ae6d8b947e7907053d9d0a9e2. 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/QZQAY2529411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3190cb7d6b2baf7505bf476d596351602db07c549fd680856057d0de089cc67c. 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/QM4TW2456991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20dbfc2408bc270361615915c29aca2ff0e603572d9c33716dc872c3367d84c. 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/USSM12402696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295dfe11223b0633c642b1867b2ceb5d368ff77e243218a98f9ccafd434dc9f6. 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/CA5KR2114010.
Free Bucks (feat. Lil Buckss & Ot7 Quanny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34dddcaa02b85a225a90bda296e17f6703209f08122272e6a8efd5ae4ddcc28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1537391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7517dabe604986f8ec613fa9b437e903c856b26c6b62fefb2d55f8ac49760c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFYY2350299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88084c9ada4554462ed927c8df211579834aaf04307371c2b5641b8d04144f8e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZPEW2401284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88084c9ada4554462ed927c8df211579834aaf04307371c2b5641b8d04144f8e. 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/QZPEW2401284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e1b3c04bef9617d4fdc317b4387ded3a5c4d1f4aaa8dd83f859d8bb8487b62. 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/QZA742524162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae335714054eb8c9dfa7b0ca2178435b85a96102a6a114533e2b52a65966f97f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051affc2637e230186a7d5a2bbe800d0f674bfc2732d600067fbe8ba29b7d16. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZW9L2319844.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cd8c81f58cfc1619a8c57626c98af295f319f8308c413124679d389422f28c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZJ842400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a26b2138f5d927f1c402ef90afa17e9de1fd0d23ae5eafcd6498dd9ab076f4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZJ842402272.