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 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 0x0412d9ed21a83f20b070d31b98332ce376a9ce0d99aaee20969614eac770b006. 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/019bd1b9-a7a9-4ef0-8df6-5bcff0b5b6ea.json and https://artists.proofprofile.net/proofs/artist/019bd1b9-a7a9-4ef0-8df6-5bcff0b5b6ea.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 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 0x40488fa5fa235560120db633a3836c77dcb00efe02052bb45de49f621ec1cd4e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZ4JJ1772350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f90022f166d4a6169056d9259a09a1b04ad3bf18f064500bd9dd55f7268c0c9. 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/QZB4J1888876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069688b9f5cc62bf7653ba66006b6d5a7876ae09270776588d59752904850921. 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/QZHN81980902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf174560fec4e72a716359bc56c9d6c6845b3cc540e89768a48c49a696c16b22d. 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/QZES62073816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04798ab2adca09013c8125ad17fb851b4aca987651735bdf5ddf5a0cf2b07ba6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES92116979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efcd031a33bb6ee93be1d68b2183cb3343ca07c40fef14908798e8a7904e2c2. 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/QZPLR2119805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211cba034c808b67bb1eb99f66502448ff6cdfa5e388a653a4cf3a2d439fd0dc. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZPLR2119807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c0643b85cb3487e55507312cffbcef7b7392130dc8327f4da76d28000db4f9. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZPLR2119808.
You Can Play the Game or You Can Change the Game
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e28181158ad240d20638f3e653b9f186c347d3f8f4c83d32ff47e852c88af35. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZHN62225916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096e1fe2343f3fd0785b3cec8eb95111eaaac05c8849c715eead0e4c3980af96. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZDA42258343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331e3840a4b8baa7a84a94846b82764831e0ea9b2bdb9f2af07ac51888648c68. 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/QZHN62225917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb38f10c2a13187faea0964dba963107f686b69175c97858d481c51f19c0028. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZHN62225920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8d6c4c40ce53a140c46309a566585a09ed7d05a92db461268fbe0d527e17f5. 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/QZTAT2257759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62a9a4bc85a4da320d79909ec7da71758286fb8be165a2a42325160aa409e25. 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/QZTAT2257762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8564c7d8c9ca145c88953c561d8901731b9d8bcc81ce346eb03e5586572358f. 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/QZDA82378446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f65ffe42b43022452d260ac8ae8333f49b77f99e92749bc7fd479c263e4c7b1. 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/QZHNA2379679.
When You Can't Stay Motivated, Stay Consistent!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c93e3d1540676e7e7ea3b5cc9fe3bb600c0e541da31202518246d8e9c59c00f. 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/QZWFM2301192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254d409593caf3106171a6eef419cfa23ab38e26334e366c3d3077cdc41a5791. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZWFM2301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb39ac9ef6d5c6dbb581659bad67a69facc0de031b8529d64713dd5c0072663. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZK6M2444842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d9f61eddc10e2ae40503c61a37e467b1de01d85ef1da450e0dcad8c8ec5fba. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZK6M2444847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe91d3353a95d3bf54d5672b9ec646a26254a5bd90f2b5ad27259282290dd306. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZFYX2509233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d9f9cea47fcb5ab18c23f636d5890d908a37aa9e0314de9e06eabbf850ce54. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZFYX2509234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a6bf9b2a705c369a9020106aa73686f2666df327e9f477717bc25596431d58. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZFYX2509235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c91eb84620a555e6a5fdab7bf730861a1d77b322dcb2684dd6ccd85a03446f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFYX2509237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a0033321d9d4e67eb6f50441d8b9ef7168e4b7545c6e89073df24a6699769. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFYX2509238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0b74775ff7352d5a09b8b5acc2e2dc5445d1e7ceaacae8b24297dbfc2795f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZPEW2576694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619e15dad4d6c0629f656dd5eb98400d66473b4b4e18ae1eb675a6b282ba9b06. 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/QZHN72525015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0b74775ff7352d5a09b8b5acc2e2dc5445d1e7ceaacae8b24297dbfc2795f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZPEW2576694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b864bc42c9781648d29e5cce0869ddf6bc7b308c85aa1ea21e51346bd3d13e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZHN72525016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff12662bdcaf7d4b23887072457fe17d2db9290c927a2aaa8d6cd479383420. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZHN72525017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e0e716601220a8058e71254fdb69f6aca75d7d040bae1cdf8394bdd25989de. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN72525018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4264784c94a1a8dcb317614ffabe21924626b0b14fa004aeb7034b572cf75aa. 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/QZHN72525019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbe7f7df8f9ad97b60ae713163a653105b243c656054c516d6f81f807bb4280. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZHN72525020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0e5241069fe05a1df9886778d7115fe4e1b4d5f94acc69ede4b2c67569c508. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN72525021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738528d00d1e878663b0ae9ac11c18ae6ce9c139d9051ba987ed4624059a8b89. 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/QT4K32510063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02092b4e14f22931ee9c68dc5f14a434cbbcca280819c7e0d7882079948773aa. 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/QT4K32510064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914c7202c20af6fd795306cf2616537080099b669638c58cd0a185e6ff1ae028. 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/QT4K32510065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5558f3167b5c859443243dff88001c9bc2a9d7e9fc735c76f75bff1dbd576800. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QT4K32510066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d755efbc572730aa16547d45ac32b6061bdcc87694ed105b5f2d453907b75e5. 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/QT4K32510067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764309ef8f58cafb6f92150f766ce7f49ab2c317e641e66dab2fa26f79d3e355. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QT4K32510068.