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 0x39ea267050afa23fc652f6252ec73b8f02369945d3ee947de4de34d881ef0e89. 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/91e2b252-f8ec-4d67-a3b2-999c1f663073.json and https://artists.proofprofile.net/proofs/artist/91e2b252-f8ec-4d67-a3b2-999c1f663073.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 0x120b32daf0f75b4c4028f483b017787d7a66b3b3c2c3ea0dc93b46f6ba850313. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLS2447037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91de3eebd653da70a35f9d99156f1b3fb7a9a0f01c1a80b980182d5a8f08a08. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2447038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92228ac372198ed60259d0b2fa958d2050a2a3b715eed6e34a20390c44125fcb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGLS2447039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c70160c651bb111163e84899e05f3681a2e59015d2cf7a67a09f5a0f4bd51. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLS2447040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938843a76d4cf97403acfef9f594863a68b8444bffbce039bb57d7a9d231db62. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZW9L2364584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3159d88be4a1c2d8752bea6bd123222b7c2dd07674a8087081e46a68eebb53d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMZ92310780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5209eb58f994a08ba08fec0fd2f6c0fb010b7e59880680c7f01feaff46a68e0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2446880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310e55eff1c80bf7d36718e1f60d7fde90f2ffb9328dc5be79277c604f771022. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2446881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ebaca6260a75293d4340dd7e4a5d6e0fa7fd5407d3bc468d58cf63ae07fd22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJY2446882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba182a5aac2a44343a7169f59824b43e38f39e3228c991766cedf88ecf2fa9f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2446883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d49e475ff728f9d74aaedf234be11a4fd05f308d233839c4aba08f5e8f78e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2446884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938843a76d4cf97403acfef9f594863a68b8444bffbce039bb57d7a9d231db62. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9L2364584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c860939b36aae546ef158468aa4d0400585ba0e2b98c32e03801f581f4d0930. 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/QZNJY2446885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8d509a7ca976980b9d6080111848ea7c1317e66eb570875b7085c877065200. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2446886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4c6d312a9bb03331afd51250a70217a2fef8623aa10dd7440dabc16a3dfda. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJY2446887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c6b0e3101b04f412a837d964f94600fd7d088f5a4c71177fa370ee20e6de87. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2446888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436e3dc642331a1e8475ee227df14bd8906c5191c20be40859f56c7e4493d73f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2446889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388d400ee2fa64146f617956558eaa814a6d5ec3d980e36d68883c6355486088. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWS2459594.