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 0x41e415f8707d72e292020205ba29c079a8286a36b93ce22de86eeb5aec76fbd9. 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/375b9fca-90cf-421e-bb14-90ee1bf61832.json and https://artists.proofprofile.net/proofs/artist/375b9fca-90cf-421e-bb14-90ee1bf61832.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 0x32706312b0e03e2037b9b6006b8d31f9a0bf1368c2081c8107c7043d86d22d56. 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/TCJPP2110547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166bc74f29ad98887d0d6238eca92516498947217ab181422d054d3053896e7a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:01:50Z), 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/TCJPP2110548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a9a0650d88ac3a44f69f3637d3614ce40f423fbfcf5dad5dbc0d44bdc01c7. 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/TCJPP2110549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a5e7cb11468372f9ee7fda61dde41f55dbc5b27f41f53775f1ccf9839cf9b. 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/TCJPP2124108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc9e1b929de9b2b14cd37312725006bddf980bfb9dd09d7432b1faafc3f8ca. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPP2156019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cdcccc4c378c699a721605375e818cf38ad786a3b32a4a595286b7127e7b82. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPQ2117545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3435e3be8edc90cd81a8666e89f9ed86b93267c40c02edb1c28b05ea250aea. 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/TCJPQ2117547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5b3cf54d9888b65154211504454d1e7db2a2b24aeb476c8edfe4493ada0b87. 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/TCJPR2213187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c89ad847a856b1ff4095e0b230fef2cf2c1290fb83d94e3c15030ed8e6407b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPS2291808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9a0afa610b49d22061932bd15a9c396d1fae61958618bed8e4fa9beb515f4d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPW2329720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e1fbf843024f5d534f155a9a90c5ff59dab35da6d5f3a4be87262b58613036. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:36Z), 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/TCJPW2329721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489898f74eb42e0ecf794bc241dfcf6abf0a9106acd32857f3e5bebfc9e94896. 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/TCJPW2329722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e88843d5dc4963629caffdfe37aa881a97ddd52632903846c92d59437aa9a4. 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/TCJPW2329725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08943898c741fdb7c6ba0cccd3e2fc789002686694fb8d5f7bebb12613924d5f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCJPW2329728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7b8c1fefb5907582776e36fa4627c75db2dce420176e3c95e916808a8b9a1e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPZ2499063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcb80348334643da581cfed644da81e2e44e10414ec0ec51c2985a63c0669ca. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCJPA2484419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa318af41a9b9a68e32740ae0ceb501e2bc7a21df1bb712cfdd556ed2956a70f0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:34Z), 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/TCJPB2462100.