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 0xe5512f86779548611e2fd99c24bfc84a17c7d1fc0b92871b7844ba5182e16a4c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a80ff70-9dc8-47e8-92ad-fb705794ef79.json and https://artists.proofprofile.net/proofs/artist/5a80ff70-9dc8-47e8-92ad-fb705794ef79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Low Down Dirty - Blues Caravan Live 2018
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 0x03c516378b4e42a79819e049f0770967d95f4426e8e08e16b56b89aa566ea9b1. 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/DEFR11800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6629ab4e859facd85cd9f18986fa65334ad6bef6a06013fb3f3827690cc2ce3. 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/DEFR11800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ea76f5502799cce50620b27d60ab08d88e1f1d77a2cfecbe465f5db2abb72. 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/DEFR11800076.
Keep Coming Back - Blues Caravan Live 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d0a2fc4a9843eeb64f93a2c56bb8b307c0994aa51134b73acceb026bddbf61. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEFR11800078.
Make Blues Not War - Blues Caravan Live 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc1ae4de2a1f4bac706093ed45e883c96cfa778bc37593ac93dc5124f35f58c. 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/DEFR11800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa792008aa236680c7d66e76bc2342b15e4a0545e82cd2d9b2ab05d21484d6c03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEFR11800082.
The Way Love Was Meant to Be - Blues Caravan Live 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e56a2e748162eedbdfe66e39700ad4f0844cc936d1fbfc91f3acc8119cf8e6c. 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/DEFR11800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad37c26d34e0401215a5bcfd5b3519ccfcc130665a64923e1525e9e0fd32bd70. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEFR11800077.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Life Is a Bitch - Blues Caravan Live 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01a8b1ce3ac4dfeda7c70b3daf0c8c4d39ecc53994a4d4518f40d1edfda18a1. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEFR11800084.
Serious (As a Heart Attack) - Blues Caravan Live 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb801150f171cfbcf50002fabc8aa24f07b4b67450bd4d6b076242e2a2fbd05d9. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEFR11800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b91a8c8f053d1e9ca28ecdc3546552827590e979e28811270959ad5271525c1. 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/DEFR12400050.