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 0x45fe05a941b8f1766487945fc062f837512f3584832f9fec952b526322c482ee. 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/c3afdb55-485c-4718-aeb3-eeb373ae5464.json and https://artists.proofprofile.net/proofs/artist/c3afdb55-485c-4718-aeb3-eeb373ae5464.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 0x6d2d1f48513be8a6cabd4df834cf74c7a0a66324f703ed13201a6adf1ff12102. 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/DEZC62321142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ed0257182fc3b01158d82c1b338b349c6ff9d8c30a07d322d7ea09e280fac2. 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/CH7812534060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625fa56692eb3b403049f5c9c84901be6d56c8bf3f1874f7bb8e3d79059a7efa. 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/QZHNC2474380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeb99ddfb08ac63c40e30f9a2f341a9058d44430083ff605fe551d458d02df0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIB2466625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa275f1535a88a681370e1054bcfd22dbac187b8f43addbf86c80ebf2406b43d9. 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/DETM41611309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb2ae2876c3be15c650f3a43d0f29cf0b14b4ba96f0a059af4a0c43cac2f75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812347104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e245d4801da44452e7b63ad45ffc5d7163fc602c391431e3d55a2e38921c159. 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/CH7812347105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff17b49a8f04094af9ddf5b3b42faab0662908401130ddb9eb414f43a81f197. 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/CH7812347106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1618d4075c87e171256a8123ec968ab60a1528457d726b480bbd79e3dbfb153d. 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/CH7812347107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd844b6ccf0e87d310c9cb14b71e3b10eee337257759f4899b3f1801b27e39af. 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/CH7812347108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac021c3a75eaa6c71f9571e81e5b13ab995e8f3738f274190e853944d164319. 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/CH7812347109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e64874469cd499d4da4895f99e6ece15d1fb83ff7db9c57994182caf1ab82d. 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/CH7812347110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e32bac22602a01aacc7a854711404645e1566a87b932c5320aed3317d10ba7. 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/CH7812347111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf88f4cbb3090a4039eb4bf2b0b16164e21d3248c576c3c3a5dd6b6f0f51d596. 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/CH7812346471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ceed11bf4f60dbebd67db72a6f0530c8a9726f8b522b39d5bb6cce2b89aa55. 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/CH7812347113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00aade7c3f92428b024d266d0ad849a51d413722fc12a290a77da168b1593a. 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/CH7812347115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809e2504f84a9d5a26fb8f31d47991d83c93441059f2d850fd9ab3904e2ae7b1. 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/CH7812226905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a9d0a0a27b27ccafab78cec3aa904eada01bb7a8ea4062222f1698482335cd. 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/CH7812220343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb0d1ccd7eb122e3d5af79acbcc419e33bdef2129d2a3dd0bb5cfa3d4e50407. 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/CH7812221677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f5b2ae5eae452f65d8ea50dfd70bbb081e1cdfcaa5bdcb22e0d299528d8900. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAS2474773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625fa56692eb3b403049f5c9c84901be6d56c8bf3f1874f7bb8e3d79059a7efa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2474380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba5dc9a0656371e0be8fea4dba135f3e0d7d466f51e60937189093db4036906. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB72308576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953732cacd091016aa5f8bf514920de11536935cf9a7565c8e4bf94baddda89c. 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/CH7812423129.