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 0xf9eaeed511331fa8189f7f1574da5493d8561ad1fb0b6efdc181f4b1fa262908. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e5e43c2-97f5-4bdf-91e6-955d09cadd57.json and https://artists.proofprofile.net/proofs/artist/8e5e43c2-97f5-4bdf-91e6-955d09cadd57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kickzone - A Continuous Mix of Andalusian Break - Mixed by Jan-B CD 2
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 0x50667a79908dc4e4a32e70375e49142f11ba60b1f8006fa0d47346f23f045847. 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/ES5270204636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b5c64024e026d21ff34f63909434588a56c9c146eff5b2dfecd0086d4c981f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5270204601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a9d755c364e8206d1bb7414c21fad5071a91338917e36b184ad6cd599ff373. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5270401925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c33f3adcd9044ba056650875415c44bf68faa7fdad0842dabda63601e03c662. 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/ES5270204625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ee8cf3db6d8bea862a06de24d376ed2a5d24ba602a7dc30cea9e905acda5bd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES5270401923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b111ad2fc1010bb8638d5f85650338e851ea6d39fe590ba3072a7d83084d8e. 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/ES5270103205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b73e24a59fc9f9caef4afd9b8c58a5397c01e98dacd24211cf42d848ad5650. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5270204105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17711ea7de19477090925ec3fa1404526f076bbe95ee038fc9f47b8e4a28f37a. 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/ES5270204119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7a701e71b857d0cfd893de612fbd037c7032202ad59a8ba69bf0faa850bc34. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5270301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8df9a93541d44a280bb187a327da0f41c554245cad26c0abf19cb18aa4eb704. 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/ES5270501521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7861553d905f2ea3c007f81aa931950bb5a521174f228d7d90fbd749feb00b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES5270301824.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199135a8a3efd519cb00c2439fc54cbfc96dab1be4a7572e9077329b0361ea7. 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/ES5270401908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e25008bbbc14b35317ee29d9dcd48cd29d250d346b142e0f54e3bf86160d82. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES5270401920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bda967022f0e9f1c288518dffb6df24ccd66a20d8486f731c1f166ae16173b2. 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/ES5270300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1962c81d090b6a50916144144e46514050ed8421e4fb8b31972d263b28d0b38. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES5270301823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa3e6ea621a18bdae83939a41bcccea56e1436c375bfb0abf05d6f2969a004. 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/ES5270501504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538b275bf6d1420c874b8f4107d065a92ba00555515e99ea02853b1976223a78. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES5270501518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2edcb77910f74f930fa168f382d9c100ca22c86b4a5b77f10c0fce57d6ca9a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES5270501536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2d1b0dfd46c2a95aab48d00c088ad6e20da5a212d7bfaa39cb0b12f5ef1179. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES5270501538.