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 0x1e343b387c6718953f2fab22fef8af5d8c4ef561aa42056fcba1be8695fa1159. 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/102545ed-121c-4799-aa60-3c4fc7008def.json and https://artists.proofprofile.net/proofs/artist/102545ed-121c-4799-aa60-3c4fc7008def.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 0x510cb2ac8262a04c243bf4dd11c85b745b2ab20b6c714414d049791f69cd89c8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6F2319720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897a589a164337446f667cd35331ba92d7d8c4976b664fd63bb6e8ea43f06157. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:01:55Z), 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/QZHN62192604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f32b5e7c47de68bb519ee10b22a62a8867089b48c4e5894139f38c088bf831. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZK6Q2162957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327feb60fc970c89f4f613d99ea3f048fd37e7ba601e36cad8179b8aaf3f6edc. 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/USAR12200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7f94553edd14f1ed62b44466ffa7e8bca9fe685fa026ddcd4f5567d3fdb8f7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6F2331681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcea4a83b24df70f027830f4ee5ec2162e2861950bcefc54b74371a9b02b0b9d. 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/USAR12300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0193cffad8d6e0c857ca69ec5f187ce0096cc689adc4fd5c694066e9ce1332. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZK6G2385835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bad50a81ad6c743a45b7e68e73f38c7bfec6759822e4e9930d59c501c61162. 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/QZNWT2306096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe505fb2070ff951c1fe90ca46f629849fbebe3cbc66f5e619c93a6829757b95c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB82343849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758da8ce06970c35d3f5f92fdba0874b277b534f64ce91fb62d358ddd0c90781. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPLS2433273.