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 0xb188ce917ce775d8ec0f72c1999894dafd2d1d9343b59c129db7983aa004453a. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc8d7f20-d20a-4349-81ba-249a211c4874.json and https://artists.proofprofile.net/proofs/artist/cc8d7f20-d20a-4349-81ba-249a211c4874.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 0x05981be71439603ab1ffa538147961718b55c6837d616ee1084a06c836ea96b9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:55:13Z), 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/QZNWT2488359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3a83ffdbe63085c099ef759c6c75a5d2cb62162f99426b9ab6c9b92802ef6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:45:42Z), 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/QZWFQ2406254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65ca3d4ae32e7611d2cd557dda538a1ae2d120ec09c1368eddd9e1cb0fd3bf. 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/QZWFR2412727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa594972072fd3737a5d62d5d758758e0137d362361eb32e2a00257b29cf97745. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QT3F32454530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4a402bc3edd9119ef548d4c789fe831fb7b48db320ef52ec83a31b740da787. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZFZ22551918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd833f2268ac3a5617b3cd9fd5c848e57de7848d6e9cd14035e1496555af8e6. 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/QZES62504886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac0c5a8a0ead8f5bbdefe737fae0027dfd50ad7b63a70f7400acbf97c70d41. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHNB2507296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d7447f3527d6ff570f7dbda4a59ed4c17b0a2a8b63392bee81789ff790bdce. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:26:14Z), 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/QZK6P2566067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d270097301dafbfc24e29921467f9f0f4ce3ebd4ece0036aadade296179a5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZK6J2587298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98d4c78c6b2f0d589b4f132d461e7f1e1b7c7ad8ddc3b6ec1f32e8139370e70. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:46:27Z), 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/QZK6G2541946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2891879c3c632944144fcead25b68192a67f106c8453071360f3992764aacf1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWR2545360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43314f74615606bc4e97a402c497a341f3123bb7375a1f981856bb770d26eb2f. 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/QZNWR2545362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabb513f20370e3af7ebab03259b9d388a92a7e164d3a2e0d1f1124bf2cf2cf6. 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/QZTB82547246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c9280cdf86fbf7b0e0a8cf448586ec398fae1fca1438193b4f281b14f301c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB82547247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6967272405c03420d9ad2b4d530e8f6ef822b3ca53fcd27a8c2640a9236ab6be. 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/QZTB82547248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6ce42d1239e95eed2451c439b5f4a478e47747a0682ce9f015f31954e0e75b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTB82547251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bdde16bd459aa1ea5e5384907fd454c7445a1bec8b013ff747c77bcfb13d10. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFK2548186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b2de9116c89653142445eb24d4d0f9f73f671fed835cd39a7d282e600331be. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:23Z), 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/QZWFX2530749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe585ba4bf98fbe94c4895a1e25a9c0e6df90863ad1a1d329b01b19486b1547f3. 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/QZZ7X2510319.