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 0xb5cab3240ca1f0ddb056dd867a5bb6f808fec79233099de800bd8914da1a515e. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92e67eba-24e4-4099-b9d5-689c6bc3a94d.json and https://artists.proofprofile.net/proofs/artist/92e67eba-24e4-4099-b9d5-689c6bc3a94d.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 0x35791cd8af26e483c6715321ec3bcb2f4b758e8fc9fb90bf92217b1b1b919fa9. 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/GBMA21860998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32203fc35ef96c43e438e8292657649e1487e6457a04672d34578641ed4782d1. 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/GBMA21860999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c3c9880ea236def74edb3a63cfe438d55039be1179b2296c7ba08c9d165990. 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/GBMA21861006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348732acac41c436f09f6e9658d0da87f5ac4ce712cf31d319326c1a686cdbad. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:29Z), 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/GBMA21861388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699520add9d1805b62d205c220e0257a7cfb860529f573f651c9a98698530abb. 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/GBMA21861389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe453b6894e42ce09dfc37c9f6c4596976a9599288c6e30c64228a4865a544bec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXF9Q2550000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a1233ddd0ba7cc2c2efbba0fdcfbd064bb2e42e94186590b06ac6c106a5c95. 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/GXF9Q2550002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f7e9f316f357cbfc7ae81b3910889812a16b99df2cbaf5403fd48d70fc0a61. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GXF9Q2550003.