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 0xef7e252679893e046db4e12ea00731b44589a164742bf44f8fec6db10198615d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdaa4c1d-b825-48c9-8204-743d085602ff.json and https://artists.proofprofile.net/proofs/artist/fdaa4c1d-b825-48c9-8204-743d085602ff.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 0xd4c52f536da1f2edd58f156638c83cb94fbce87b97047066f8ad6aa5e2ad4636. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/KRMIM2258699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842dd1be718926ac00c243a89a17ab274cb568aa803c42099a1b9745c063c545. 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/KRMIM2258700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3992bf721d4bc3dc2611b48e0b56f62bfec02cfa4a23de43eafa18ef23537d57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2258701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df1ae5cb5000693b5bfdef1a891d323dabeb64ba63bf3f05f42fce56f8b0dfe. 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/KRMIM2258702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e5f57e354655285e2c38f24ff9aea2d4872790be71160091a49718919e767e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2258703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ab9b55135e4a814bf6084977b1c6e97d7440247d5a29bec3cba36d1024365. 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/KRMIM2258704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea9939705acc76f7865aac50a1cdba809557b9576c62f50c634d48314cbae04. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2258706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eb12a4c11d52b3dd53e7b17e1870f49090e30345d4d01d941419675b27795a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2258708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ba9128bb9c86580a0a7924951880f9248537bce4de266cb5702bdc8227d32. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRMIM2258709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f32f24179e0e88c0834e08d3094d0a45082971005b4408f4468e1e3cd4930ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2258710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e439424539251ff85b385b1fa48c31d68ce53c50d6b27c42f19a8e32c75ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRMIM2258711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc1aaae97c96572fc3b4a141f655ab9a92824be6467c81128a7102e975ac67f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2258712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc474a2cc17c2b672b7b5b5e712a01ef7794b94967d27e6fd6e031544858c3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRMIM2258713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d04bbaac5ce871741e34bc0a13050cf5184affacdcb96445280673cebd34fb9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2258714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696de87d0b982d9b66cec41e4eee4af61200afaf77977ffc6a0346254cfce24e. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:57Z), 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/KRMIM2258715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a6820cc344499a3ab30dbddf488c6a19d2b6cb9e320cddc00bf375a321cadd. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/KRMIM2258705.
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 0x1ad94141d2adc3000b95368511032f7f952cca6e0e78e290ff8106f089990db1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/KRMIM2258707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27396f9e63a10f218a0e15a9e6125e98f1f838b59d2b9bb1e3c09799b9c3f29f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA531700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c2f9260d4f7cfcb46834c6a05e87e7083c447e62e16d4c0ad81eed0aaa2e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA531700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ae3f11050967783b1adc30768e930ef0bc1574aff40b677eef50e45869e6cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA531700200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b7e3505f05b0d21ba070829c42893c4e3abbf94f11023c8eda39a0c6f15a76. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA531700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ded1428bc207bca38431a06a392ac71cd0f2e2e0165416a773bace33ac8f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA531700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d65de125f6aded5a9fd26121c2b77e19ae0c8433b32b0a357701605ca3bc81. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA531700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c75e1507357f938cf387d9ac0d7af00798a49e1efcdae6d0ec62efa02c9013a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA531700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba48d7df790af47cafe342db8d081e4250d06f29e6720ec9ab39b5cb53e63a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA531700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f82fcd268f1ffc52aa4f03087c4ddf8fcf1901a83e2e2f4d1ecfc61f0739e6a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA531700206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde20c77631dfdb5674bacb511cf3e987a1925e3790e5e5763e6d0f0a07d6c56. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA531700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3cc9daad33b2c5a6fa4f4bbc41140f72fa28e6268e87820dc4f8150b6b6e13. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:45Z), 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/KRA531700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ef87a9feba19fbd2a94f0977fd6589ad012c19efdd02ba428d0b218d72914e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA531700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b434fdf12fb028e7d6541a95cfde6dd7e6a1bf4f846df2d83e8bf0e1e6ec148. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRA531700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee36cca2bd7f934f2614b73d868d831043990fadba09a6fb2a20bd0018ae5204. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/KRA531700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711ca5442bfb513390f793b0a0f3a1590f7edc67d4ae72976e22322996ad2f23. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGJ2030614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd000ef8af39e8781738ca901a23c2d7d2bcdd55bd944a59884794ff1b2f35185. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USCGJ2030615.