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 0x157bd33bdc3759798af4088f84458af842957ea224aa3428003ba256f1db2685. 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/cfaff995-bbce-475e-8082-184712fd02bb.json and https://artists.proofprofile.net/proofs/artist/cfaff995-bbce-475e-8082-184712fd02bb.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 0x31e64f05a37a5729c694d2e78c88eb09b69aef3170a6c6ed86aa8056da8571a9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM81444754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587bc57d63826499b7a5f7a84f258cdf50ceb97bc5d2b8d7b10affcd4536f372. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM81444755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bde831c474f5d5c07487c4259a87b7c7490240cdb5d265624157cdfe260039. 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/USHM81444758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9ef786cf4b10f432c2b3bd0fb6811bacc4931d3596d837cf2d5fc910608848. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USCGH1520269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a4b19b8e6091046f4c3a630bc1a39dbf364d9b5bd80a9641fa5941417f6f24. 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/USCGH1520270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3b71983c84935711bf2950d2f9809d68e944fbe2395bde58416b77635bfa8c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USCGH1520272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5071a5274cccefd67aae7ced7a8e32ac5613ee14e4e163d03eb90fea58c8a673. 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/USCGH1520276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c769c9b806c672eca41a00d9cae64e493d2897e17a8bc412d95d328f88ea02. 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/USHM91641460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e11e94b8cc77f05df5d66056bc365a172403ede14bf055a4891693a75557d91. 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/USHM91641461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a0de49125dd9430d541580c45caa66448981571820909c0afacb2480945325. 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/USHM91641462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e5d840f9c8a1d6d9fafd1a644a7cfed0ab5f713c58097fafdff16cb7753231. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:40Z), 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/USHM91641467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f8007e99a8690b437897988f703ea88ba7fa5cf8fb5f5e0ed67e7223e17f2e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USCGH1804759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c2733f48732ce02b760ec6ac156970a2e135fa1d2ee97743afaa63622e0d51. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USCGH1804764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45981f7b08d86895184b13286c6ca57be6c9a956fc095987eb933ae72e89e83b. 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/USHM21987287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808f3fbe38939a081ae18f6365804698bacea3f245f9fe19cca5892d6e184e1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USL4Q2033552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae0a7e1935a23f5db6ddabc5de7aa62904e34b100597015c11bdf93e496b153. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USL4Q2033553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12011902c83cf0fb7aa6d80c614578e05f11646604caaf86ecff8eb3c0b34122. 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/USL4Q2033554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfb97c4cd75322b1c383c66da0cb94ed57c7754ef6bca784086e2887d40b7de. 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/USL4Q2033555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd983f2e63369e1a9ec90448522e9f23efa4b5e61feed6251e0492327d3cb5ea6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:03:46Z), 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/USL4Q2033556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce0c54d6fa14027b1dc2f28d0a6b672f0c0eda919f5486757bc5d64fb2527b. 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/USL4Q2033557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f1b105fb4ff22a94db7e4ae6a55929f8ad37a34b50583ec7cb23e71ce6524c. 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/USL4Q2033558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1746f79e110dbf502afaf70fde57896fe2416e10af1350c4238d4660f780f7. 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/USL4Q2033559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa9d2f5dca44d8a0ac756b2669f679c3526a5bc2a00e0f4f4909186ed3ffaf7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:54:20Z), 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/USCGJ2365772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8621d37373c7df386b6ff50131c49199b8a104d60712e0600e4df2bd482b2b16. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:32Z), 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/USDY42554812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6b7a450c63182a42829747c0ee14449df2213a9bce16fa9a593e3706b61b5b. 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/USDY42554813.