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 0xf86fab72772a31f04357255c5235594d5cccf3d94fb0192855773f13cf1689d3. 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/c8442eba-37fa-4b97-8ddb-f2d444bf510c.json and https://artists.proofprofile.net/proofs/artist/c8442eba-37fa-4b97-8ddb-f2d444bf510c.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 0xa0ff20165d14164a3fd813a2472d8384dafca7c68093fedb6695e295900d8316. 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/USHM91921473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6bf670f1b8959b770e46f21c0b6ed5db3d232cdfe2c4176ce9f7df3eee0a3c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USHM91921476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11380fd5767e38463102b36d55b964d076d4645ee4c18253ed0e3722fbb17ab9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:24Z), 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/USHM91921477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a582ebd14c34d2a6b12f9e9e8604f0add4ddf1c7f22977c9fddb8fe0cb4109. 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/USHM91921479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81c33a7a6ecd28371284869401090379acd35fac8dd66ce016469ec2190ed6. 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/USHM91921480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3573eda700d320cf625cf25f2e53fe544df1dc2ffc6686a36b3033ea29d8242a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:49Z), 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/USHM91921481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a09d3491158225720d57dfe2c74d57132400628a00bdec55186c60730315d9. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USHM91921483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f9f659e55def8585b7016e616783c3695980b083b99a734dcf30287a1856e3. 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/USHM91921484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1815962de1e02ed89486de4592445c54eb03aab5fa5021fc0e6fa060b4c7aab. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:27Z), 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/USHM91921485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61328013c6ce918f1dd643dc904c5c5f57f1fc3e469235ce694a4f1e2edfba8. 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/USHM91921486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ffff23f7293e103a0116fcc3ba4c416679f163a9f7e1716ef1d354d6b851b. 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/USHM91921487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e14eef54e454cecc1aa425fb58dc23ee5dd4d4e7c569a700faa1aad43e81904. 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/USHM91921488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8106a13b7cfaccaa15b903537e56e0437c770256bd849df81a1db6636d3f235. 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/USHM91921489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752e5df4b1d7926b954de8b216a04ab94877dcff7ec40ad148074e38f72e7f65. 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/USHM91921490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa034a5d6f16b9d46d62d5e4600519675ba2ed9a37d700ca0577dba40fa3231f. 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/USHM91921491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad670abbc5d151066b8e46d77732a38dec8f656023af5ccbcee0879fd5d8d42a. 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/USHM91921492.
Soviet Republic Main Theme (Folk Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff2c43b2b4618b5695597eb137d525a29878cd4486c2f8513555f68c5cbd3a. 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/USHM91921493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5ace7d55c01131989dfb2d6aabca1ffc8a6715bef8d62497f61b114a4c5262. 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/USHM91921494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ed4da75a95be33718c69328fe826cce514f93017caac34be0b6e09be709026. 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/USMH92311244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870bf784c9f0aa3a555559ef6b5103da67daf2190c447f7b718d031cf30e6be0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USMH92311245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eea571cf5ee7c536ad28e4a78a1bfcb8a6233c6639c76783cd8e72d0875aec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USMH92311246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19de5cd1f72e7cdf870345af46cf772f03b9a579901db4ffb3103accd9dfc84. 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/USMH92311248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a908862fee9baf5ef3d9bb645200003592544e143a9a012806d14e81710fdc0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USMH92311249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f79611e581a3d2ebcaeaa81ca6b086ceecebcdacde1a9a8a61ae774158791c. 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/USMH92311250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac92ff3429e2bd9aef97a85ddb8602721496a7873c5fa4b52bed94f920962e5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:09:03Z), 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/USMH92311251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38273f3e7ef39909473a966b47323af8a97f3be8c5a9cf4d149c25992675a48d. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USMH92311252.