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 0x3fbc487ff32f8e1ac1c37a03392bc9779849d7dcf672f5a6b4cabdff5df5f2d0. 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/3558f8ec-3374-4ddf-a8e5-28a61ff2b04f.json and https://artists.proofprofile.net/proofs/artist/3558f8ec-3374-4ddf-a8e5-28a61ff2b04f.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 0x49acfe0067575504f21e6ca5723cfc97b0fa765a9145d0c3cd6ebd8dd2d6b723. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:43Z), 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/FR9W12244421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a11ddff4d967b74ad43f93ad9edeffc15363ed9f18b559cbd18b894bb45ee9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR9W12309919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531d119d8378fc0c36ef02649e12c2bc34f3753c91a1f005d7b20dfafaad60a5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR9W12308398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf641655075c0bc95a1dd7d095ba5424eabd1e4d44aa56aaacac8e30d88e0745. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR9W12308405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b99526248b63c68171d7998335986bccdd8cb337c992d3adc6e138e15f63480. 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/FR9W12309918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786c53957bfb29026974839aa97a370b70f431c87cb9971990520ae109e2eef6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W12309716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9364c519c415956bf783e42f05c5bc0092c2c62cb8149f347c862b7e188df551. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR9W12305152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eb65f5a17608d4a47062104a318c98e1a8bdc83ada7735af4b95f08729fb8b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR9W12308402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49863c6fc0fe3fc1ed1b7770cc5f62617a581cc352274952d053268851ddb25. 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/FR9W12308399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e915c53f5c9ffa9ee968785016c6be982f2c8a0305fb0a076763af18593f50e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:30Z), 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/USZXT2351300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afad3d5d0eb2a929092be46c15845d8b831da258fad865a4c555d581643be05. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR9W12355722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2831a1127c318dd2a3da763173aa41c6f85d2742b89c874c94e850a53540a1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W12415000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8974ce108f8587b4223b117e12b1ceff7c9b9df69b5655220e99bbe032f3c. 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/FR9W12406320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79f12d92c3a1084973184dc70c68a31f56ad5f36dda1efe858a6e2dcc275d6a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12406323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74586d1b04004f4603064a3401e7b9001b0408f8a2e9da90b6bc096cdd8262b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR9W12414999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2831a1127c318dd2a3da763173aa41c6f85d2742b89c874c94e850a53540a1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12415000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8715e0973fa2156b174bf6f69fdce160c5b2e487c2bce3d475f45acefad41a. 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/FR9W12406326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1409c847221ad882aed96bfc777189ad6620277d5c9b7e96b3acd021a7dd66d0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W12415001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d24fda011a5bc3e7b5ca7df7d02f7a12151e98819f72689c5fd5f0ec43c209. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12411123.