1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3720e5591b4edb2e55480a0056e029ea0e12871a7fdfe5ed2cb7f00621bd0ed2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cf8af45-fdeb-4ea6-94b8-f342fff6f990.json and https://artists.proofprofile.net/proofs/artist/0cf8af45-fdeb-4ea6-94b8-f342fff6f990.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 → block OTSBitcoinBlock must exist at that height 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 0xa1db317252a94741d3a382c1421831ad345ea5ff4666f15f67c02d59c5cf43e7. 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/QM6P42340112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c1fb236521b03d1ef91733d0dd84d61fb6f33cb0b67628fd2899de07523f45. 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/QM6P42375162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae9f18dfad57f8a3092e03dbf159f9a4337944941d59e0db43cfe5f5f61bee. 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/QM7282309152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa3e34c10316e70616354f0418bcb8945b6ab853f4f5fff878057388de748e7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHN2333112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706370b963446d13e1a43022814668eeedd4ef79967b440fdd06adc68c3067c4. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAHN2333114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8204e3548639bc886606d7c9f81175ce938fa956fcd1c435d553a62ff6aa9. 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/TCAHN2333132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df5820bd093bcb1e6959f23b6087525977b6f1135917c0a349de7818108f3e1. 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/USA2P2417857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4226b58f325d28e0b6b80ef1b98874314637a7ed4ec73c37e8ff1dfcded564. 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/QMBZ92437330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac93a0cf4be4a097d75e1a03eab790d1aae8e13ba9bd1ac492db57a11c36563. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZWV32469758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56179d694319faf82713a0d0bd3c62b71e1a2d861f21991719ceb4fad9af46e9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA62467280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f3dd55694cb349d3d6897128d878e00d550cbc7aeb43c1828e63893913eac7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA72486186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6ebd7e99bd5c5b520f0a000861375aa6dbe48906f0576ff0596feca3efd298. 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/QMFME2405672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d643aee94b0fa4864221b8925f16f07c43671649903a04667cd911e6529f420. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZZEC2460224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3bc415ba5cbb6a3d844e15b91ad289ed4473ed627314c7cfea8eb062c053bc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW2533265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d32f6b5ec9f0df1d9bb9c0518709570aea94a0bdd1da8917934ca1f297627. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTLA2547974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c86231eda4f534efb8fe3ff7b7e7227ce1994d4abe8c5e84ac2d260ab5d941. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:22Z), 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/QM4TW2582114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e9a83899c3ef7e634d87e2c63696f9393ef108ccfc06cb962fbacc7569db97. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLZJ2585765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75339ba99bdc2d8015a07253231a466113cb9491c749dc22d5e71def830377ae. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USLZJ2585775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb238a195646692c592da5962508ff7d633020e39437cee46d6d013c4254e7a43. 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/QM6MZ2518353.