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 0x2d42189431dbdddff4021b7e933517580f1e4ccc2da25bf8e357c517b008488e. 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/1399b88c-c8b0-4964-bf00-c1a834d9029e.json and https://artists.proofprofile.net/proofs/artist/1399b88c-c8b0-4964-bf00-c1a834d9029e.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 0x03857f19187e82405e8618fa123ea10b38380d63ac25a2dd6cd3cc6552a06bbf. 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/QZFZ22474851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e62aae5dc618000dcc22d1354f8e8a296436d4375e4cf7ffe54d17a5c58076. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZFZ22474853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093113b2d41740bda5d865e90842a9197ce173be02ac8ab7d24f90c67ec28a82. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:37:42Z), 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/QZES52453052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723f2bd26cf8f111c685d2d40a03b7f432d6e9dcaa1d3f7e30b87365e8c89633. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES52453055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73a84df491a57856de26bbbf811688376741021ab8fcd9fd996ee3cf1a1727f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:33Z), 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/QZES52453056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec09858342a2b631bd30c01f276e60ade5059a3a2e8cc85a23906c578ed0aadc. 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/QZHN32429123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5b98289893dddf6e1e99c77c87679d2d1634511030fba4f9891471c59f0264. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:37:35Z), 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/QZHN32429124.
Slumber Melodies (A Nighttime Journey for Little Dreamers)