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 0x708c6a86f8c5e7701adbe08faf6c919dd3b14a26cb726136abe931ad7a0b8980. 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/36fca0e8-4f70-41ea-89aa-470116c5e993.json and https://artists.proofprofile.net/proofs/artist/36fca0e8-4f70-41ea-89aa-470116c5e993.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 0xae8c65e25c51c94a1e02b3d133729ba082623dcfac59e9e5220af67fa8ac4267. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:50Z), 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/QM4DW1854434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd4578546f3aef703b47763517ea548c6729180f9dbd37657dddd7627e6fe3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:17Z), 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/QZFZ21932702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9b13d63de8eceeb0cf0091c8f4b2ca473a6cba44d3f3af1976544699f10af1. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:16Z), 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/QZHN51995845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d245f9d1a34ddff849e14f5c2f4b4b89d2a98abc12116a7d5379ed12844218a. 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/QZHN81955852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa96ebdfc81809566218ba00a83f3e0970efdf0e3db7a215f50fbc8f18d05343. 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/QZFZ52031333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9081243dbf908c0131a8a28511c68cab53acc56a0fba0a22043fbf32139f99. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWW2020168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2091a42b03ae48cc0c3c12a9d658bf77beb4d8437075d83953d3c95d62e5a18. 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/QZK6M2190996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d4dc1b9aa4e64c101c8cdb738805e5cc26cc7329182f02884f1ba2e0e4c80d. 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/QZMEN2192138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315d8276eb917a6c0c48e9ad980aa12862e89a03b2ccd48c01df8aaea7e8d27a. 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/QZNWQ2132813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2527e4bb6171db8de3605d866f398caa614b938f4e5f9549a13df977fcab064. 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/QZRP42197071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5977f5294aae381f4aa3496c5e1c3e44212b8b47a9adb84ee11ced7a7ce8f688. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:25Z), 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/QZK6K2268444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557b91aafca9707627be8b4258c61cd33662d1487a0072778ba4f97215fc4a04. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEN2214008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295d5443ef4aeda2a24615a490effbc316ee4969b4b4198e931509cea719cf9b. 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/QZPLR2262973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6575f929020ba450554114faf44e8cc0ef8aaf94b8b7fc91db0173bb957ad57d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTB22295640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d940c9a45588a0ab1dfc3c43dd50281cea35dfbc02e1c161756cc3e59b5f8f. 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/QZES72368594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f6c0a4edae48be063c13079cb83e165a47aaea62067abdb589807e665cf8d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZNWY2399746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3776598dc90c4e216cf32b9fc0055b7831fae376eddab7aa21ee980869b005f. 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/QZWFP2302129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00e38b4fca41cd323a019ba7ff8d02da0c11ced772403419a6c7b78938afb67. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:03:14Z), 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/QZTAV2440007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70caa027dbad789e2cf8d07e20e2ceed57e7abad84026f06a7135a633d36bce. 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/QZWFE2412865.