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 0xda41b7695e1a203e52e3d33e9a19c093f0116c058e409e41da8832cf32492b9a. 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/a6347dcb-12de-4fd9-882d-ddaae4966f90.json and https://artists.proofprofile.net/proofs/artist/a6347dcb-12de-4fd9-882d-ddaae4966f90.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 0x45ec30bb7c77d5d6e397e632b59f8a7e482fb092640bb40bfc26b5ea61c5b3db. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QMBZ92289102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88704131bb95259af83e9745f2d177f87cfe6630e5accc5e40e19daa8bb2e8aa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW2309229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0f46e87978fe7bf205a7a842f238c35923db8f13ef153ef3ecd94c908df513. 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/QMDA72220591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dcb2ae7e6cd63cb63cbbdd8a7f0d58425be93d75524056939b512c038f4442. 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/QMDA72220611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eea9e53779a676942f536eab7ef09664fb7ddcabf2599cb2e7beabd0eeac313. 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/QM4TX2367992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97051aaa96c9110c161f768ddac6ae4bd07d36ccb1473e029762a2e8fbf82e1. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM6MZ2399952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeffb200273e06bc1e0c588881ca399c1e4c1fe26b90f21f0298f6c87391bd4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM6N22300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09804078f318b06892b35b9208d15ecd1f0ba258145640f57e9ba956568a7442. 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/QM6N22300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2692a88e62c64d2716a165cac8f86b1aaf5b7ad7ba4a8aabae31f3da258580. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6N22300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eea9e53779a676942f536eab7ef09664fb7ddcabf2599cb2e7beabd0eeac313. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM4TX2367992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97051aaa96c9110c161f768ddac6ae4bd07d36ccb1473e029762a2e8fbf82e1. 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/QM6MZ2399952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeffb200273e06bc1e0c588881ca399c1e4c1fe26b90f21f0298f6c87391bd4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:19Z), 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/QM6N22300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2692a88e62c64d2716a165cac8f86b1aaf5b7ad7ba4a8aabae31f3da258580. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM6N22300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09804078f318b06892b35b9208d15ecd1f0ba258145640f57e9ba956568a7442. 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/QM6N22300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711a2e5618294478c173babda7d9af23ea750263ae2a6b529e57b6327155817c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:45Z), 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/QM4TW2408721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e2fa48b1f283973fa5240ee9871d0aeec72f9546df8c179b56fc119853550b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:45Z), 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/QM4TW2408729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeefed6a07aa105c0b0aaf1611bed628eca164f3da6458d27efa7b899d38d339. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QM4TW2408762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12a1807a0b8ddeaa5e8f83d453c624c8dccafe7fff0644cfd91e19468facbe9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM4TW2408768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfd0cb63f865c4252fb56ee881b052b1c183d212eadb499b23d2f1f433944ad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4TW2408772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ac8c746d6115f0052c12257e306ea2b10f8457de1c47690b4d826d6b640790. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM4TW2408780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569fb1f8c1119f5a45517d579b6899bf8daf14e4be35a7a84f47f5d87df374d5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QM4TW2408797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfb4ae4e882f8142813399729ada03fafef2ee2ccace6ae9d2a135022f37394. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QM4TX2501331.