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 0x5329da525d93c17b08bb1a4e9ae65cc9604ffcdd7298ceb181b2c53b63077a7b. 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/ca7d8563-8711-4774-ae37-2a48295a63e3.json and https://artists.proofprofile.net/proofs/artist/ca7d8563-8711-4774-ae37-2a48295a63e3.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 0x8ff80c1cc4722270e065761138fb8975872090779178656678ccd6293ac942cd. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:55:30Z), 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/QZTB32537433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c024406974e9447a1fee6c11e0ac7cc1449b26691abb93d0a2a84152c82df44. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:44Z), 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/QZTB32535620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0946c1b27591c9d790884c55ab6b8860975586127537bc042e9478e914167f6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:21Z), 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/QZTB32550814.
cuando escuches esto, todo será un recuerdo... (Plex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6b0c76fb7a8392969179c58ec496c79189dd9e1d6f7151f27e7b4568c3afe5. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QT3EX2589330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eae72f63cb2ec572d86b6c4adb43182d7f36b22af6b402b673d06d7a849b45. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3EX2589484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5c9b441e4998f023623cd8026e725bdca9bdd3e58b63108b6780fe8aaefe8a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3F22592818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96c852a5e4de122cf7f54342a224ea162196d2e3b2eb0b69e14a9b9c377b858. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3F32537068.