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 0xdcd82ccf3a6935e6c4e907beb3974a62eb540209993afe287ee17147b2612d5c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91bf23e1-04b0-456c-b3c2-71525853d1a2.json and https://artists.proofprofile.net/proofs/artist/91bf23e1-04b0-456c-b3c2-71525853d1a2.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 0x06e2dec236764890d281585c5751913ef2d546341e0a0897ca6ca285e41d722b. 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/DGA082206888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993de029ecbb0ab33a83d8912445ac74f6ea67052de40ec6cb8bdba966b586c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX282217327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba650a2a29a00fcad3817673072f098482cfe0e590b96530cfd31a421baad1b5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282217330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7628e6ffd7e99ff0b534f4ed71b278f70e3c3cc55066be86333745384cdef3af. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:51Z), 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/FRX282217331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180727cc7304bca89f5165244d23323fcbaf4e326909d006699c3739acae427. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282217332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292957d12e34b6b986583744101a9abd89a16bd6e60eeef9c7144caebf9fad2b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX282217333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9832bdbe918bdeb6fcc6332880dc8c8c8316099c2b71e9b723ab3df3b75c57f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRX282217335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4802edf59461cfd05cf84404ee98842b9a92b08e96f73a9ca15d7107cf6a890b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:32Z), 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/FRX282243091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfb8fc1f2f64afe5152d923bc2d887782d128504cfdc21503ee336257fb9a6a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX282243101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121dd42e2cd741637995c970f70828e32ecd20283753969ad60ab4de086e82fc. 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/FRX762221928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5f41ba2914e6cec7227f259f54cd781ba7ba7f84e8e3d7752d3b09a676757d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX282306343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f53b729538ea20f9bdfc59f296ff5db6bab76a8142ff2464f7ca06631a036f0. 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/RUB732067688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9bb07d8cba5b11c08ace83ec9ca004b47e13587e5e6200c33bcb79462d4430. 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/RUB732067680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c89a44a5219ad15d27b725fee4e96f675175a9552cf5866db7f633ba778539. 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/RUB732067692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2cac3d26964cda77c8c4686e0d4df48ef093ebbdbd9d64022072087081135d. 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/RUB732067696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e5506d64747591cca9e4323ff61e073fa7f7b58a7ef71486b8457679245d4e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUB732088922.