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 0xc987b7349d979ae44b0c535240fef757b74d78cac266ff84bff7731ef2306385. 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/cf3a913e-bcec-4aef-9b7b-166e692fcb32.json and https://artists.proofprofile.net/proofs/artist/cf3a913e-bcec-4aef-9b7b-166e692fcb32.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 0x9935af1cb6752f9a71120cdb95def64024a72bb0d0b7f730ac67688e319fe2a9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:56:12Z), 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/KRMIM2144712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033094627503c15b2fc1e7867492cd8d9b14a02330d6dfe21654920e0757caff. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/KRMIM2211477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdcfcaa01744279fc2331d9c3357f42d5028e0e043679114f0bcc6c2123efb. 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/KRMIM2211483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2061f89323b30d4610891d58cf1b0d96211af4b1bbad37536fa49bd2816bfb9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:55Z), 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/KRMIM2211485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b5c94380760ce780694fa96deaa6c8ff6244c10433fc68be32bc4a93469a1f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRNAR2207835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821527ac9fd55e5c51d7ee4d5576b7e058a033fbaf69d4ab094c9808c788575c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/KRNAR2207836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd4efcfb0a84d52852968e02d6964909e7766837209aa8d929f31760840d9d. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:07:10Z), 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/KRNAR2235501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a0795ef1d464439f67288fb8621e2bc6b31a75bcd06f7018c8a7a565c1d0f2. 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/KRMIM2470163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9498da8c5c32706180bb9f6fe09fa64c14385b78f891ef0971bdba84ce28496b. 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/KRMIM2481545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b0345cdf0b10873aeb37a846d61f1adc404b2e01dc8b0ba6e6c96a8eafbd85. 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/KRMIM2481546.