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 0x9c166f83abe6c36eeef5a4fdca5f111c633ef14c304a5eee9d040d6182fbc07e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c65810c-e39a-4a87-9508-57b097002eb6.json and https://artists.proofprofile.net/proofs/artist/7c65810c-e39a-4a87-9508-57b097002eb6.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 0xb0d631f7d29e09d126e9a4c72c40f8d0b866c817c06af6cf34071168f69a6b4b. 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/TCJPB2459848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd2533383c497f02338fae52df805816d455ac120f61a3202587feb1c094a8c. 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/TCJPB2497455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370fe92e546db43cfdc369adb693cce06d733404bb57ea9c0b19fc11b454faf9. 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/TCJPC2410462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ff30251230a581f66b8549e4e800f4df1922ad1df6f66bfe9f7f6aacf93413. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:52Z), 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/TCJPC2410453.
ネバーエンディングワルストーリー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aa75ba496235ec302126417664ee9db53ecd533054f55937b73008d95fe2a5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:16Z), 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/TCJPC2410477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0da94fd1a092d35ad258052535dc290ec7d04a2c7fba00bbb67365245a12c0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:22:25Z), 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/TCJPC2410471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33f6a2c64b413cb41cf4a89d347146cecc78b69d05fbb64bb34d028a1c84ac8. 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/TCJPD2418622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385b7f41f495785e93990dc84a0d80263d9dbd22bf07646d06cc0052c19c9f51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPF2585728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469803ac71900f2dea3c035761c87bf5084bdf3aa6ba06a709b38948d1e4114. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCJPG2500563.