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 0xe8f9de27d9fe435aefef4e78af16f8c9214e9a2d757eec5b876e843c295b18cd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/476e1eed-c3a2-454d-a268-6db87c997554.json and https://artists.proofprofile.net/proofs/artist/476e1eed-c3a2-454d-a268-6db87c997554.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 0x085089b698b9ed08b0c5b8dbc0ad0d10f5f5d43a80a2eb4a0d5db1e87a562884. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHZ32097064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863dc364c3264a115266596985fe5f8cf8c710250fdc932d08fd2b3bfd5347a7. 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/QZHZ32097065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7782e826491e7dc16e21485718ed5734c7632b975ad39260992a3f5f25fabf2e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:34Z), 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/QZHZ32097066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1c7ff9e4a529866c8e1c67aff9ad74cb5c78299b2c64b8960b0f7f4f270744. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ32097068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bc6b47d713b74c6ab47019bd7045f10814170582973f6be4edd9584346eb11. 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/QZHZ32097069.
Te Quiero Con la Vida / Apenas Te Fuiste Ayer / Sabiendo Quien Era Yo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f5599b2659793948178b00ab4c6c22f261745f3304ca5afedc7b52130a267. 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/QZNJV2080362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15535f63e6eee3049872cd3acd2d2614c020168bbd9ce3b71dee68f0600150db. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJV2080366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf14576711c7211a931d632573a34b5153969febb908ec4849d632360482680. 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/QZNJV2080367.