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 0xbe450104b6609b2d1e5595c44c4e8cb15a65992a59e6ff5ba9f8fa7842759fb1. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c856ec3-82e3-44e9-9e6c-811286c2389d.json and https://artists.proofprofile.net/proofs/artist/2c856ec3-82e3-44e9-9e6c-811286c2389d.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 0x20362baf00ac005e5debdf469d3ba0ca824d30c045ad422e933a0f8dffb35173. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGH1458872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9e2e4cb651d51681d6eb275d16903520e84784fa7a8f2d76fea39cc6a75430. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH1458873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7350ba023df8ec3699035c6fe9f75b8cfb346ca74550356365c197c2ec8d168c. 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/USCGH1458874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7987326da9737cf598af0146f1b44bcf0ca6d6fcbff4cc3f2e77bf513fe1e55. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH1458876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc4c87a1e640a066132e08f2b3052e9d60d5fb23b52686393c5b5b458387b47. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1458879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9b8928fbbb3b7c8ce20652031229759434d0e7fefcf9e0b0dd0ac3a64b51c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM20829996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422f8b7429b56f4ed0fb2618bf60a5b4fb4696a20dd6c202b79993621dcee941. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM20829998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546a388aa14bd86ab622fb8d21604068cc1b74a019d5078019a8742881b32a2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM20829999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f1704bc9e0daea7fda0c2855661f2e9bf7666d22b59e7fd2d622c08ebd030. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM20830001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4928fa97b99250a7ed5b4c0c57d60a0af27433b45298e4fb940b78d69650e78e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM20830002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ba43a162c01a5f518ab60ea56f0f22306880500ae2c36a005e3360cb717281. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/USHM20830003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad27f3c86ed81d5a805dfc7fe73b9b8a1dfd11e158d24fafec61fedc0446fe4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM20830004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8536f16587ee2b4a0f559cc1e86848b348cffeeec3e995ff9d00087a5a2d9186. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM20830006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa907a37cfa3a141ecf636d105a51c285318fb54cc09c79baef9ae1125f187033. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USCGH0765781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca0f409f432c5bb83b095940278554cd934051d590c09a341dd588c1b1618b2. 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/USCGH0765782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b2ff4f57f91f326fdcbc4875b8de676bf8bb0940367efc325e35db680e2e3c. 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/USCGH0765783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67ba0d0b0130ee4a0a0749d7ea255cb6040b351bbf3432a9cb026ea67ca8f60. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH0765785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ab8fcd09b50cf7236fe92df259a397b11848aa8fcb643dafe107c4a9cc6062. 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/USCGH0765787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36885ee043fbd50955bc8303fcaad5e5dabcca4a770b6b3df0da35947de4c8b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH0765788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51f84c9e8e703aa32e43d6cadb78b0746196f968b60cf64be0e13cda6777cb5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH0765789.