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 0x10a64b9ba234ae64338f080717db4be31f6f4b18c338ad9e15988d4c81e7cb83. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/406f0aff-eb7e-4469-838e-31b14a4fe294.json and https://artists.proofprofile.net/proofs/artist/406f0aff-eb7e-4469-838e-31b14a4fe294.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 0xdb8f2f2599e63ea6439a458003f054d9e26422b3c588427e41d398d284b9b1df. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZES71895064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd22e428c883d0dacfd8ab2328b39c71ad644a0db7e7936dc4f3d6812ecf89. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:35Z), 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/QZES71895082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6923a06ef5f1389fb2c52af0e08dd98203a1a0e0b0ba4fcc31d53a1f5dcd27. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZES71891064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaf10c24456178926e89f40c747e136751ae480f51ceaf96a373d534293f753. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA51947615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd084a4b7fba820b8f1620d7a39c8477b95ca8c8f982690859bb2a2deb6d485d2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZ52033363.
Sabes Lo Que Te Digo (con El Princi Princi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae4705d3f826902526e7f0b1918e1bd6c23914889b9a90cf9a3afa7ad408594. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTVM2290536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836e0aafa7ea5fa73f15d188f1acb1cd8ece5b5b7e31fca68a33a89af1156d71. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:47Z), 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/QZW9M2360865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c2ef89c7cbd09978f0b585e4b340579aba7e2a21dbe717065c7e38da159f3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9M2436666.