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 0xee847d568ccfd7eb417edf5515fdb52f022f85ff83ca7a03d3807b9f405ff4d8. 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/433c0807-5fb3-4350-901c-7413d508ffe3.json and https://artists.proofprofile.net/proofs/artist/433c0807-5fb3-4350-901c-7413d508ffe3.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 0x58cb53b645c7a9da53b3bef5aaf83e95058c96e3ad2ffb3140d72b008df8b04e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:29Z), 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/QZFYW2016783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a25520b8631ba51fe2e52d7be871d30446f03bc597f29f0401d937394a650fe. 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/QZFYZ1957661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5f5a98506b097f3ce267903e64616f444826ade453d2da1b33634ea67d84d4. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:07:48Z), 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/QZFZ31928661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8642a5a649bb7ecf42d76bb1818bcd4afb63dc3ee802349e37570a2b01768c46. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZHN31929019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69368e51d93accb21167d00e34314ac6aec2898633f6a6e581c9ea945d621c37. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ61967789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bda82d3a80cb18615fb4bb5ebfcf633ccf24636a834d9ceb53349b9bf43056. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:07Z), 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/QZK6P1906018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cebd3d2253a9db535991a6f1221b964cdfe8b9866e225e27daba354e9dacf2. 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/QZHN61971477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cdffe973b2f336fc4b033ba91cf1607f819ee9e7dc8542831fcd4b891e1b97. 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/QZNWZ2004930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0b0d0621325fd0fce3db1c7e1388b288ba3793395b56866fd10fad18c8e4d5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:45Z), 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/QZMEM2029447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a36253e185ad9c80fc98ac62868a84e187144b7e913894045c081b62358f79. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:31Z), 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/QZHN42043857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27ca4ddd371d10e5bc102768538fda74f976bbc3d5ba5ba71c5681e537303d. 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/QZK6P2024427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0ce07c015714b85fc279557b16313c861e25a5eea04a4a2aa4db914901b69c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:17Z), 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/QZHN52048146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eb390d51d1dc743e0252abb2410a3c2d443861eccbacc2366dd2b7e291409a. 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/QZFZ22012579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12b2b56c7054979fa80ba772161f5026b9b3805c4cfd7c55dc4d86410eefd42. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:49:41Z), 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/QZFZ42090340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4a5fe6fae7650c761161e5a96d3bed4fc19cece663bed1e11cd91f66d25d84. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:31:40Z), 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/QZNWR2076074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6f430d60e715e8d495a7d51659815f14862693dbf4797a006cb63be9b070bc. 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/QZFZ42212015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3502d4aae85c5f745e230f6fa55d27cf6bcb42437baeb18a45648e2234e433. 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/QZPJ32192303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4c70deb652aacd75c70bbc38d6eb58116d3a988c462285bc196e5dc34e0372. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZPJ32202876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aca8fc398566da74f7c0a54570c3d44e12cd3773a79ef0251f75a72df0a7dc1. 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/QZMEM2176979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8484952c4068a63d9bb9e65a923a6d9ff34ef45f218cecc1aa681b5396cde9b5. 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/QZRP42120042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e592e645594550b5213550ffbe05dae684a279e1e98d451b0d73931f8a0757. 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/QZHNC2261132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d16ea057109b6b2d52db19cd589df2ee18712c83281c16b9514ccc61edf45. 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/QZK6L2161096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe427a1207f2ea9dfc1f1ee2fee7b0f532a04a8373f0ede9882a00b17c290d9bf. 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/QZDA72161301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15647ce8be1b3a1f1f41911629c2c96a5632b7d3c9b0e548216d04bb1e3b3213. 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/QZNWX2141531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63856c11d310459dee567250f5a62504be637d15eeb8d0ffbec50ad516f9f765. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHN82167694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61472311f35c5e383f8b09ad89c95291b536f6f85f71c8b7f40d2e7ff64d70c. 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/QZHN42240246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4485e8932965ae3c056b3a301679f4bb0bd178d795d89a2eb398fc2ce93fe418. 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/QZK6G2271257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178d0288e8fb14c6cfdae6beb4a8dd559193dcb235ada5d6c3a69cce40a95477. 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/QZMER2186476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5c0572b9445987a636f0910dfdbb11b21457133128c0133e0e1b571e61f08f. 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/QZK6Q2156244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ac82afcca99d21c629b9ed097a3e8b065bc95080e81309764caf61164f659f. 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/QZES92140137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fba51844189d98f083b025c57de5ef105c647e0b035e6005cfcb83069276a2d. 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/QZHN52280970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6161806a039302297937f3fdac1401a240aa03c9d96b39061ae3e396dbfeb42. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:23:38Z), 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/QZPJ32248119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458e199e25f2233ddfa9552a21fec286c7edce7207041b94984bb1c1db71975d. 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/QZPJ32259707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f6fe54b87ef12c4ca21b995974c9889bfc045631ca96f511abceabc30354a2. 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/QZPJ32268301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05049d8d7328fcb9a802b4e6c859d0be087cc4356a9d4180f4bbc2fe5dff6042. 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/QZPJ32227723.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb451a0f1cec692268209a3bcf8b12f784d97759cdaa0b7468337633abb271b0. 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/QZPJ32495617.