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 0xcb33353bab9b8d60ba8f1c6a7e5ddbc20e2ccea87925cfedc48835d162fcf368. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ee0c977-d550-4442-a712-867eea38732d.json and https://artists.proofprofile.net/proofs/artist/9ee0c977-d550-4442-a712-867eea38732d.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 0xbb3309c8868a0cb0b76757c7cc98102746139220028c938e8353bb2e15bd6bd8. 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/FIBAR0400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce7564b9c1368f6e96ebc1d19eb751b8c23839ea15d5092736b93e5bcff7e84. 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/FIBAR0400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d44dc88eb57bc90947d0b8cadb7a7e26986ea4fda958a6b0b39c4f0dff51d8. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/FIBAR0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455ea60087e3114f833827b355f9bbe984967cbeeafaabc3a1fd11db651c212e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FIBAR0500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd37f71ddb36de158d5a338e7ca6d2a2c7ecfe7743fce570bea3241954a1fb2. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:22:27Z), 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/FIBAR0600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce01382dc1935e5a8bab0c8c79933daa638e75ac91129e5395392f22107a2743. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FIBAR0700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c6f826397d4190da79f41e3d5ebaaf97af182baddcfd023f5cfaff763adba6. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FIBAR0800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b9be855961d957ab61ce39bd15942caf341e1a5820bde00817c955aab301a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIBAR0800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c0bde053915abd5ff0dd10ef66c02640ee6710ccb4d33c816621db76d84f8. 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/FIARA1100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff9201e19464ce1369227d829d897acde51c26b947d0f13b0c8321c583649c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:06Z), 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/FIARA1100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffea0c6008d368f5a1f91a9f4fd44bf6d7e76a4b66e0c95c5ddd19735c798f6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIBAR0200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffea0c6008d368f5a1f91a9f4fd44bf6d7e76a4b66e0c95c5ddd19735c798f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIBAR0200021.