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 0x5b6d2d38d9d9244f0b419a42da6ccb42397e55edcd9c7fb4de089ef9be0d731d. 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/ce3b96e3-2601-49d4-9d93-b7232c4aed2f.json and https://artists.proofprofile.net/proofs/artist/ce3b96e3-2601-49d4-9d93-b7232c4aed2f.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 0xe33acbeaf11452b40cffc424682398ad9e594f3060673e656034030b806ee98f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZJCP2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd397aae1f724048ee4616767c6eb7299d093cef48e301880db7b1101cc6c474. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZJCP2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f34026ffab2bfd573f609b8d4a6d89ba2933ef39910d2c3a2fd6f625d38ab3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:14Z), 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/QZJCP2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaecc4641fa5c31bb5e0fe94e14697ae6005b19c61a52a94d606cd116d01c77a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZJCP2200027.
All My Life, My Heart Has Yearned For A Thing I Cannot Name
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8beda1a13d683cdd0e4e5f22befc4b7ee089537225938fd3ea3d54739792435. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZJCP2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc443d12f542aa9a2e16ad76171d21bc646819401e8fc1d75698e6b01a93faa42. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:11Z), 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/QZJCP2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bc6092ab438274b00019c835f4850256dce3cf9c1b241d561182e99c8dbfc3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZJCP2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9b31030b81c219765c824861b5d60c140220f58e13124f7799ac10d75e3f5a. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:03:24Z), 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/QZJCP2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb65860576e5f70b542ee508b858dec7be374ef22401c7444b84e9b6f854bfe. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZJCP2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186e4f286f39e41718557105b196c54eb8bb69c91e9fea0bafb01a21ce235a9e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZJCP2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0380334648f9ac1595e98e8b43bc8f82f7eb4fea38bb5d4f7bc2317a00b28a92. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZJCP2300083.