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 0x60bab4eeef52a6f443ab3f03f38433c7f6d4abb6078c030790b0849a8ad6d6db. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a347142d-60ac-4706-8bc2-3fa0385fc641.json and https://artists.proofprofile.net/proofs/artist/a347142d-60ac-4706-8bc2-3fa0385fc641.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 0xbd0bc75778e9c8f450a22203fa76cf8c7fb68d0e3a15708132d6ece976baf996. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:19Z), 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/DGA092435871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb6e1daf9183ba61d69c6184df7f02d1eef430101fc330bf8daf56ac052312a. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DGA092435872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0f23cb890cec16fe6f9b33e329d87db468e28da35f85f3db4f6cdbc2f1804. 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/DGA092435873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2210896fbb6fb0366402a291ca5ef717ffa4bbe944439f273b9ce0f7ec0a15. 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/DGA092435874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56686559c43d85cf2bb07c9f5d9f3c3a0131c0a76657a717fe4322957d6ab30. 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/DGA092435875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1d8d76817f78ad42101cb6783c93528768a0542bc500397df97c8aba725c8c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA092435877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fdf1fef6e2c9e6652ec171404445b1a5372e75278578ac5d3137cb44daf721. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA092435878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eea2fd736add3c2ee745fb719ee5d181373ffe78d6ffe2dda77c5e99f3822e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:33Z), 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/DGA092435879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734120aede0a4a8e0ba81913b65b6c7924cc00efd82a5b657f772496decb786f. 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/DGA092435880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dcc69881d58ba201918c3d7bb1da53a6f55466b916a9b9067e4a1a9c0906c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX452520996.