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 0xd769d219f1d34517d39e623f5f0c355253b58c7b51d33bde8816aaf154b2bbf0. 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/aa262137-19bc-4f88-b455-4df8dc555e6e.json and https://artists.proofprofile.net/proofs/artist/aa262137-19bc-4f88-b455-4df8dc555e6e.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 0x66b65f3382197a1a3a42ce315e08f8c0d4bd416f87db2d84146ba9588772f074. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:53Z), 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/QMEU32108967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d90a69606c3ad98317a266cd5954d57f8a51f6ee482c201328c111beeab6b. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QMEU32108968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b1d63c887fda31f844669557f3641a92431ad882c03456f3141479e7b3114c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:03Z), 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/QMEU32108970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53380c4ca818f0e9712d5d24a59a2fc445cf7d05c1e8dda75ca6ef6f1476716c. 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/QMEU32108971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f5425fc6af48d6e0ab751c9794df5276006be7ff5e22ebdef9f0566cc3a81d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMEU32200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe31a15109cf23203778f89ff7e243a6160a7a9969aec14b17d7c653cb39fa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:28:07Z), 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/QMEU32200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee9978ef067b19eb76b7eda24a4ca29eed753d2a12f283637639418b5dd611c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMEU32200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5362986b370ad435e48c7c136a46614c85bcda382dfff3f156d34e84aa5c820. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QMEU32200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770d2edd64110a7be7ea5e6096413c2f4f4e19c210332e5185be4cbf983aa942. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMEU32314697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe423a34698545020f81bdf353c2704aebaf4bda16be0b9d1a58952fc47fa950c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:40Z), 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/QMEU32314700.