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 0x272fa18fb0803ed3aba746bbfc16c57c7f0c2493e2c10029be29d1a6016f6767. 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/88e902b3-12c8-43b4-a12f-51c3425210d2.json and https://artists.proofprofile.net/proofs/artist/88e902b3-12c8-43b4-a12f-51c3425210d2.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 0x954d3959ea1fe4fec06f05b9ffe639934492dc1a2a5f3e3e75e0fd95756a3dbb. 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/BRBOP0100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e5671317750185f39d616051fe6b9deb1559173a1431d4eb23a98405d3b8bb. 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/BRPC20800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdfc192a270115c2fa212f09f5bc75ec592b1674d26327423fc0b63459d6975. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/BRPC20800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836e2f017d6448c05dac0fafc7a678fd4de7a5589ba026f25f282ac6d7fd3e73. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BRPC20800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8099eb02c929d37b8742895a58547e4daa974f4ff19e6da067f22ba0432cf759. 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/BRPC20800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1924d24f9445071730eec2d6e6053ecb0eb0a8312c4e25b6c849b064f559f561. 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/BRPC20800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df24e9cfcbd64c2ba404850181ccb928fbc30d8f4c23722d68b8415cbb29655. 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/BRPC20800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4260d44b1f52907b186af43a671dc9c460b7dc4517d2187e751b3d49ac86bb50. 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/BR4VT1100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b6f655f2869fa766dad7c65efd047f832b2c8141be08bd2ce9bf502232d673. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BR4VT1100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2d3178423ab3144c4375761724073ef98d57a66757306558bbcd15a0cc3d9d. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/BR4VT1100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79c236fd1fd072f815e4bf1c050a2c560c13991ee0b490ff5c43ad15f54fd40. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BR4VT1100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e5b256d59fd7f49d4f2b5419ceaf720b9a250ca7ddb02d46127bd8ecb1a244. 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/BR4VT1100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213bbaf5e04c0aeefce4c601b9fc430d12a77e086daaf4f7a62ca4469d144bd. 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/BR4VT1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69217b4a5e8da491c39c677e1c4508147c7d7464de4e416470365f77f4ba4e7. 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/BR4VT1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dc1e1d18c9fea4b273f00dd23cc0a5f40bcef7c7d4cbfbfa3e67f9b8176196. 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/BRYA52300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fab9bfce03e67b01867ab772e27f2f51d0f3b5953503aa964599a4d6f897d4. 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/BRSME2100889.