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 0x6653aa59e4d9cc4ae5f237581f164a21b7210aaede88db377c6023da6dfcc45c. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df338ac5-2992-4037-931f-78540d6f8131.json and https://artists.proofprofile.net/proofs/artist/df338ac5-2992-4037-931f-78540d6f8131.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 0x40b01bfb85e743436c54c93d98f1b68d3de621ec352e608aef24a578c25ace9b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6L2372554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e375a0d1e6d2f4b77cc0a811804b1c0b096ea7e31980048f785171def6d8cab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWX2314375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd49e8b8a76537fc3371ff0f02cfb20faf6a9904f541522727de5857e6790b7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZRP52410490.
The White Horse Guitar Club Live At The White Horse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6708dfdc85154c89e26a10e7ab70c95406821ed4969296281d4cf5875947e8a8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:13Z), 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/QZTAZ2466485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dfa3182317499ee7aa433c50485521bda400e4a41709036eb227c03f090036. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZHNC2360738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b83f559d811291764ba5ad3ccec97815da4190abcf42a01bbe8c91c152c727. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTAZ2466487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2112215db26f924675478435b58dc593f56c4d90bfc7ea6c7ad8459f2d3d959d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:35:51Z), 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/QZTAZ2466488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b01bfb85e743436c54c93d98f1b68d3de621ec352e608aef24a578c25ace9b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6L2372554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431bd2963cc314a2f26c59c486ec8c213311d31fb8520cf1469018d141a7eb9d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZTAZ2466494.