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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96abab42dd5048c14e644c5f63ce06af274bd754a1fc4da06da7cf0e46d970b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4f31995-b569-4be0-9723-caeda01b009f.json and https://artists.proofprofile.net/proofs/artist/f4f31995-b569-4be0-9723-caeda01b009f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BLUE ONE - ROUND 1 (CHILI PARKER VS BLUE ONE)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2749c7f19f86663f78b3eed2773b3085f24348fbea1a90b5609bc4d9395d59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UYB282482056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2749c7f19f86663f78b3eed2773b3085f24348fbea1a90b5609bc4d9395d59. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYB282482056.
BLUE ONE - ROUND 2 (CHILI PARKER VS BLUE ONE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4e554c36f58b3c8bff9c5b2b907cab9b541f13a93d67a06637397f86be4b20. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/UYB282482057.
BLUE ONE - ROUND 3 (CHILI PARKER VS BLUE ONE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bb6fceb4e2eb38ad23bac106e04099c6ddeaed440ebc53d77c7735ed55e03d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UYB282482058.
BLUE ONE - Round 1 (BLUE ONE VS STUART) JORNADA #9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09061c89b47e8cd29763882620152e046830128be7451cf1925490f4a89095e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UYB282497512.
BLUE ONE - Round 2 (BLUE ONE VS STUART) JORNADA #9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60c80111879733077267338d22a0e32f44dee075bd3e925405e7e0ad7b8866. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UYB282493514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09061c89b47e8cd29763882620152e046830128be7451cf1925490f4a89095e. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/UYB282497512.
STUART - Round 2 (STUART VS BLUE ONE) JORNADA #9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd74899baa6b0f3dc49fcc0561ae4314a2cf07103ca3699c395e3d4a73d8a37. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYB282406211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60c80111879733077267338d22a0e32f44dee075bd3e925405e7e0ad7b8866. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/UYB282493514.
STUART - Round 3 (STUART VS BLUE ONE) JORNADA #9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8a7583e9b184305e4f5e4e0be7a7a9d1d4f1571334d63d838be790b5a0f3ee. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/UYB282407964.
BLUE ONE - Round 3 (BLUE ONE VS STUART) JORNADA #9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4cf7a583a2eb40a238e9e13cd7ebc3d7a1ccfcdae4f530c63fdd7de7f36321. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UYB282424064.