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 0x8098f8ce66e1cfcfba30d74cea9e7217ba864a1a14ad359cd842f78e04e28e2a. 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/6c5f9d80-5b0f-4239-ba5f-d9561c7218e7.json and https://artists.proofprofile.net/proofs/artist/6c5f9d80-5b0f-4239-ba5f-d9561c7218e7.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 0xae733c7e39e78d665d4a757c67d29cb4f4ef89ce9bac4e2935fdd425d858f432. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GBBBM9102053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54562c6d03858c6fecb85e684940f7839f5d7eac47f40a1ef976a5d77394958c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBARL1700791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf8eee372157d84421d3e028d34bde018fa26a965da8d3e2936c5bc7095279. 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/GBBBM9202070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3844100a2aa9520b35cb08b9eac601e1d01fd3d87e59626932b0bdf596f654. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:38Z), 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/GBBBM9202071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0808eea105d4febd73d8134c5829698a613c19cc92a932e519c2eb8bcad6192. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:41:40Z), 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/GBBBM9202072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1213f160ad3ba40be1a7db0e09028e09ce32a96a703129c5cc7c761218fc95. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GBBBM9202073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0ba72d355d77aa4164af900ff98b994bdc0d5bb7aae9aa7f85824b8c08b2a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBBBM9202074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480e5c3f9227ab09917c16e0e3b2328870a5b9130a59ed7a187b87895abe00fd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:54:42Z), 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/GBBBM9202075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02608fa5bcba3b27bca1497c52e46b55aa0db2ad2e1a22eae1d846bef0a7d33. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:12:56Z), 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/GBBBM9202077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3759820703034cfbaa1031e9406eb60f135dfe075fed0f1c18901dc59bebc1. 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/GBBBM9202078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858cf3bc90cb1f54c3348b20307defcaa587df2a2d93135f37401dec0a6fa232. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBBBM9202079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae733c7e39e78d665d4a757c67d29cb4f4ef89ce9bac4e2935fdd425d858f432. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBM9102053.