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 0x66ff3540bc22e800384b06f229dc271931f999d44cac8a319b5ce81d5f9d6017. 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/48678dce-a186-4055-9150-8aca7331e775.json and https://artists.proofprofile.net/proofs/artist/48678dce-a186-4055-9150-8aca7331e775.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 0x4c3a152d9a79358275062e046ffb185b171e85b0b03e8a03e1ce5f86cc8e663f. 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/QZNB82213420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee67864add2f17ba0383caca5ef1a9d9871d1a72fc4e965c1676697eb3297ec. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNMU2279440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a27e34656a85ff9b72369925b643760b2f4b24316ab86463fc4552751e0139. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZNMU2279442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1784b75051461645539b7b6d90bf27a3f8ec9b6757f81f621e5224e9093a9f29. 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/QZNMU2279443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eae28b1cbea0af18885865a15bbcd73a8821a50d7ae203cbac10d60958f70c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:07Z), 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/QZNMU2279445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7564d69158d2a3c477384614b26268882d19681c1b85fcf246e6c415b76d419b. 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/QZJG52363618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7564d69158d2a3c477384614b26268882d19681c1b85fcf246e6c415b76d419b. 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/QZJG52363618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d7d05b06c3513d3ceff72176a7fc44d42f6e2d627b8e56258c5d0a441e6060. 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/QZNMW2394875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf466fd15ff9b70a51abba98e1789e8da6ad4f758004afda5979b4e21c0dc70fc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMWW2444245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbad1ebab22cc75a22b55538fbb0a32612c52e3f852b7425601344cfbbfbe45a. 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/QZNMV2429588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbad1ebab22cc75a22b55538fbb0a32612c52e3f852b7425601344cfbbfbe45a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNMV2429588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf178f056b9f0b62ca457efc8a228884087021a9a470dbe52aa7485d1a19ac99. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:21Z), 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/QZNMV2429591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530e308b0451cf8e85d4d2c5a183c0d418b8e0664dc46e4eaa7cc06edf5535fb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNMW2415945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80466ac4681df1a54dea7c0b3fa8303d5dde55ca9a8a79c424d7e64334a1183. 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/QZHN42538568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9df9f99d1e7cf31e6c640047ca32aced4be9789d6c4edf1095ab172a877b0d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZK6P2508820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1971b3f5bddb47cae9cbd326c43440b0dad572e35c8cc2633df11fa36c93cb. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:21Z), 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/QZK6L2590277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d02609bb2aee06fc73092436c36ff4e8fac5e7853ddb22c9c6a9cbac545fe7. 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/QZTBC2487491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064a1d65df75a51a06695903d118dc2ed14a1f66d4216a8bf9d96d0b32538d5b. 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/QZTB52585421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8558cf1b1b9cf8c38691641e8ce7b80304f922ffc377d430a32fc681214c0d2e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTB52585422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea62c607c0c227fa669f7bd5fbc57e18d183f66ed271b2f76d6a924e011fd6f8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTB52585423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5ab336c0377e5d26fdeeaa8c055c398ce252b45467d6efb57acc83e8a6968a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB52585424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9715efd3dfb43cc48d6dbe01831efc86641e9951f817a4f17052297dac500f21. 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/QZTB52585425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0f2795f6ed8ba2f4d5b0b1042ebd168486633fb05bfb159602c50ab60b6390. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:55Z), 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/QZTB52585426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03338d76ae6d336814415d6a82b4b85dce13d05520a4951afe8981a9e709eae. 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/QZTB52585427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4e14a8bcbdbe5fc782546c573b4eef9147eb0fd20e9843b8703f65a46b1fd4. 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/QZTB52585428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5edb085fc135f061593739f24832f18c3905716280946d5002cdbb4e415998. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZTB52585429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab504ea4518f4ff0a88a4c0b516384d15228b0831d656131a08e3d5981d26ba0. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZTB52585430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87a4fa45cfbaea378ce844daebef9c5d32310e1c1dfe30e6d3ee2a538360adb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZJ842503668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34bf6df3090c50704fd299df64f965dd71f8d17a3239d9aff93ac007b9a1bd0. 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/QZJ842504069.